Question 2 group 2
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The document discusses wormholes and who first theorized about them. Albert Einstein and Nathan Rosen first theorized about electromagnetic field energy connecting different points in spacetime, which became known as Einstein-Rosen bridges. John Wheeler later coined the term "wormhole" in 1957. While wormholes are theoretically possible according to Einstein's theory of general relativity, most scientists agree there is no evidence they exist in reality and it is unlikely they could be traversed.
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Question 7 group 7
No, it is not possible to travel to the past according to current scientific theories. While Einstein's theory of relativity allows for time travel to the future via high speeds or gravity, no theory demonstrates the possibility of backwards time travel. Some theoretical physics speculate about ways past travel could be compatible with natural laws, but none have been proven. In the movie Interstellar, the main character ages more slowly than his daughter due to spending significant time near a black hole with strong gravity, allowing him to travel years into the future relative to her.
Black holes.poem
Black holes may be tunnels between universes rather than singularities. According to Einstein's theory, matter does not collapse to a single point inside a black hole but instead spirals infinitely into an alternate reality, suggesting that black holes could contain entire universes. Evidence for this comes from the Kerr metric describing the geometry around rotating black holes and observations of gamma ray bursts associated with supernovae.
black hole final
Black holes are objects with extremely strong gravity that prevents anything, even light, from escaping. They form when very massive stars collapse at the end of their life cycles. Although we cannot see inside black holes, theories predict all the matter is compressed into a single point of infinite density called a singularity. Black holes can be detected using telescopes that observe electromagnetic radiation like x-rays from material falling into them. There are likely many black holes throughout the universe, but none close enough to pose a danger to Earth.
period 7 Sheharyar Sohail Black Holes
Black holes are regions of space where the gravitational pull is so strong that nothing, not even light, can escape. Surrounding the black hole is an event horizon, which marks the point of no return beyond which the gravitational forces are inescapable. Albert Einstein's theory of general relativity first theorized black holes by explaining how gravity can bend space and time. Black holes have immense gravitational forces that can feed on and destroy stars that come too close, collapsing them into the black hole. The largest known black holes are supermassive black holes that can be millions of times the size of our sun.
Time travel
Hi guys!!!
This is a presentation on the time travel.Many of us don't know about time travel, so here you can find the complete information regarding the time travel.
If you guys have any doubts then feel free to ask me in the comments section.
THANK YOU!!!!
Time travel
The document discusses various concepts and theories related to time travel. It begins by defining time travel as moving between different points in time analogous to moving between different points in space, potentially using a time machine. It then discusses Einstein's theories of special and general relativity which established that time is relative and affected by speed and gravity. The document considers some potential ways to achieve time travel, such as moving faster than light, traveling through wormholes or black holes, but also notes significant challenges like paradoxes. It provides examples of depictions of time travel in science fiction films to help explain these complex theoretical physics concepts.
The multi universe theory
1. The multiverse theory proposes that there are multiple universes beyond the one we experience, arising from mechanisms like eternal inflation after the Big Bang.
2. There are several hypotheses for how the multiverse could exist, such as infinite universes, bubble universes arising from pockets where inflation continues, and daughter universes resulting from quantum probabilities.
3. While the multiverse has not been proven and poses challenges like not being able to observe other universes, it remains an intriguing theory that could be validated if methods for traveling between universes were discovered. The document discusses some possibilities and implications of the multiverse theory.
Time travel
The document discusses several concepts related to time travel, including spacetime, black holes, wormholes, and parallel universes. Spacetime combines space and time into a single continuum with time as the fourth dimension. Black holes create such strong gravity that not even light can escape, potentially allowing travel through wormholes or white holes. Parallel universe theory suggests other universes may exist where physical laws or events differ from our own.
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Question 7 group 7
No, it is not possible to travel to the past according to current scientific theories. While Einstein's theory of relativity allows for time travel to the future via high speeds or gravity, no theory demonstrates the possibility of backwards time travel. Some theoretical physics speculate about ways past travel could be compatible with natural laws, but none have been proven. In the movie Interstellar, the main character ages more slowly than his daughter due to spending significant time near a black hole with strong gravity, allowing him to travel years into the future relative to her.
Black holes.poem
Black holes may be tunnels between universes rather than singularities. According to Einstein's theory, matter does not collapse to a single point inside a black hole but instead spirals infinitely into an alternate reality, suggesting that black holes could contain entire universes. Evidence for this comes from the Kerr metric describing the geometry around rotating black holes and observations of gamma ray bursts associated with supernovae.
black hole final
Black holes are objects with extremely strong gravity that prevents anything, even light, from escaping. They form when very massive stars collapse at the end of their life cycles. Although we cannot see inside black holes, theories predict all the matter is compressed into a single point of infinite density called a singularity. Black holes can be detected using telescopes that observe electromagnetic radiation like x-rays from material falling into them. There are likely many black holes throughout the universe, but none close enough to pose a danger to Earth.
period 7 Sheharyar Sohail Black Holes
Black holes are regions of space where the gravitational pull is so strong that nothing, not even light, can escape. Surrounding the black hole is an event horizon, which marks the point of no return beyond which the gravitational forces are inescapable. Albert Einstein's theory of general relativity first theorized black holes by explaining how gravity can bend space and time. Black holes have immense gravitational forces that can feed on and destroy stars that come too close, collapsing them into the black hole. The largest known black holes are supermassive black holes that can be millions of times the size of our sun.
Time travel
Hi guys!!!
This is a presentation on the time travel.Many of us don't know about time travel, so here you can find the complete information regarding the time travel.
If you guys have any doubts then feel free to ask me in the comments section.
THANK YOU!!!!
Time travel
The document discusses various concepts and theories related to time travel. It begins by defining time travel as moving between different points in time analogous to moving between different points in space, potentially using a time machine. It then discusses Einstein's theories of special and general relativity which established that time is relative and affected by speed and gravity. The document considers some potential ways to achieve time travel, such as moving faster than light, traveling through wormholes or black holes, but also notes significant challenges like paradoxes. It provides examples of depictions of time travel in science fiction films to help explain these complex theoretical physics concepts.
The multi universe theory
1. The multiverse theory proposes that there are multiple universes beyond the one we experience, arising from mechanisms like eternal inflation after the Big Bang.
2. There are several hypotheses for how the multiverse could exist, such as infinite universes, bubble universes arising from pockets where inflation continues, and daughter universes resulting from quantum probabilities.
3. While the multiverse has not been proven and poses challenges like not being able to observe other universes, it remains an intriguing theory that could be validated if methods for traveling between universes were discovered. The document discusses some possibilities and implications of the multiverse theory.
Time travel
The document discusses several concepts related to time travel, including spacetime, black holes, wormholes, and parallel universes. Spacetime combines space and time into a single continuum with time as the fourth dimension. Black holes create such strong gravity that not even light can escape, potentially allowing travel through wormholes or white holes. Parallel universe theory suggests other universes may exist where physical laws or events differ from our own.
Question 2 group 16
1. A wormhole is a theoretical passage through space-time that could create shortcuts across the universe by connecting distances or points in time.
2. Wormholes are consistent with Einstein's theory of general relativity but have only been conceptualized and have not been observed.
3. There are two types of wormholes theorized - Schwarzschild wormholes which are eternal black holes and traversable wormholes which could theoretically be crossed in both directions.
Gravitational wave.pptx
1) Gravitational waves are ripples in spacetime caused by accelerating massive objects like neutron stars or black holes.
2) Einstein predicted gravitational waves in his theory of general relativity and scientists have been working to detect them using detectors like LIGO.
3) In 2016, LIGO directly detected gravitational waves for the first time, confirming another prediction of general relativity and opening an new window to observe the universe.
Black hole
Hey I'm DIVYA SHREE NANDINI. I'm here with my new presentation on Black Hole. I'm sure you'll find it interesting. well first thing what is black hole- "Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star’s outer layers are blown away. The crushing weight of constituent matter falling in from all sides compresses the dying star to a point of zero volume and infinite density called the singularity." wanna know more about it then come with me. :)
Examples Of Disagree
The document discusses the Fundamental Fury roller coaster. It has a fast hydraulic launch that accelerates riders to over 250 km/h in 5 seconds. The coaster passes close to other sections of track, emphasizing its extreme nature. It is themed after fundamental particles and how violently they interact. The coaster tracks are colored cyan and purple to represent scientific color terms for subatomic particles. Dense evergreen trees surround much of the ride, providing scenery.
Quantum Theory - A Theory Which Completely Changed Our Understanding
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Advaita Vedanta and Science
The document discusses concepts from Advaita Vedanta and how modern science echoes some of its realizations about the nature of reality. It covers topics like the non-dual nature of Brahman, the illusory and relative nature of the universe, the concept of multiple universes from Vedic texts like similarities to modern scientific theories like string theory and M-theory. It also discusses quantum phenomena like entanglement and how it challenges classical notions of space, time and causality based on observations echoing non-dualistic ideas of the oneness of existence.
The black hole
Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. They form when large stars collapse at the end of their life cycles, squeezing matter into an infinitely small space where density and gravity become infinite. Albert Einstein first predicted black holes in 1916, and the term was coined by John Wheeler in 1967. At the center of a black hole is a gravitational singularity, and its powerful gravity is why black holes were long thought to be completely dark, though Hawking radiation shows they may emit some light.
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Does the Universe Exist if We're Not Looking?
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This article is a "Verbatim" edition copied from the Internet into PDF. This article is worthy of a wide discemination as it connects the ungerse to human existence. It is ironic that Pythagoras stated "Now thyself first, then you will know the universe and God" (Paraphrased) while Aristotle stated "“Knowing yourself is the beginning of all wisdom.” ; these two (2) quotes, combined, state that it is wise to learn from cosmology as the universe is the state set for human existence and this is the idea of Biocentrism.
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
The document discusses arguments for the existence of an absolute truth and God, based on evidence from cosmology and physics. It covers:
1) Philosophical arguments that truth is absolute and knowable, not dependent on feelings or preferences.
2) Scientific evidence that supports the universe having a beginning, including the expanding universe discovered by Hubble, cosmic background radiation discovered by Penzias and Wilson, and temperature fluctuations detected by COBE.
3) This evidence is consistent with predictions of general relativity and the Big Bang theory, providing support for the cosmological argument that the beginning of the universe requires a cause outside of the universe, namely God.
Wormholes
Albert Einstein's theory of relativity established that space and time are interwoven into a single continuum known as spacetime. A wormhole is a hypothetical topological feature of spacetime that acts as a shortcut between two distant regions, allowing travel through the wormhole that would be faster than traveling the same distance normally. Traveling through a wormhole involves passing through a throat that connects the two mouths of the wormhole. While theoretically possible according to general relativity, wormholes would require exotic matter that violates the null energy condition to be stabilized and traversable. Current research focuses on stabilizing wormholes and minimizing the amount of exotic matter needed.
Wormholes
Albert Einstein's theory of relativity established that space and time are interwoven into a single continuum known as spacetime. A wormhole is a hypothetical topological feature of spacetime that acts as a shortcut between two distant regions, allowing travel through the wormhole that would be faster than traveling the same distance normally. Traveling through a wormhole involves passing through a throat that connects the two mouths of the wormhole. While theoretical wormholes could allow for faster-than-light travel, they would require exotic matter that violates the null energy condition to be stabilized. Considerable research focuses on finding ways to stabilize and minimize the amount of exotic matter needed for traversable wormholes.
RELATIVITY THEORY
The document discusses Albert Einstein's theories of special and general relativity. Special relativity introduced concepts like the constancy of the speed of light and reference frames. General relativity holds that gravity is not a force but a consequence of objects warping the geometry of spacetime. It predicts phenomena like light deflection near massive objects and gravitational time dilation, which were later confirmed. The document also provides background on the Michelson-Morley experiment and quotes from Einstein and Hawking about the implications of relativity theory.
Black holes FyQ
Scientists have three theories about the formation of black holes: 1) the smallest may have formed at the beginning of the universe, 2) the largest, called supermassive black holes, formed alongside the galaxies they reside in near the Big Bang, and 3) stellar black holes are created when large stars collapse in supernovae. Black holes have extreme gravity that warps spacetime, with theories that anything entering one would be instantly destroyed or may pass through unharmed.
exploring possibility of time travel and has it been done in past?
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Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur Scientist
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Astronomy - The Mother Of All Sciences
Astronomy is the science that deals with celestial objects and the universe. It began when early humans observed the sky out of curiosity and tried to make sense of it. Over time, civilizations built observatories and astronomy grew into a formalized science. Major developments included Ptolemy's geocentric model, improvements to telescopes, and the theories of relativity and the Big Bang. Modern astronomy involves studying phenomena like black holes, the formation of galaxies and stars, and searching for a theory of everything.
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
This document summarizes key points from a session on Christian apologetics that addressed whether absolute truth exists. It discusses how truth is absolute and knowable, and reviews arguments for why Christianity is true based on twelve points. These include cosmological arguments that the universe had a beginning based on scientific evidence like the expansion of the universe, cosmic background radiation, and galaxy seeds predicted by Einstein's theory of general relativity. The document examines debates between Christian apologists and atheist scientists on explaining how the universe could come from nothing without a creator.
EPR paradox
The document provides an overview of the EPR paradox proposed by Einstein, Podolsky and Rosen in 1935. The key points are:
1) The EPR paradox uses a thought experiment involving two entangled particles to argue that quantum mechanics provides an incomplete description of physical reality.
2) By measuring properties of one particle, corresponding properties of the distant entangled particle can be known instantaneously, appearing to violate relativistic constraints on information transfer.
3) While Einstein believed there were "hidden variables" not accounted for in quantum mechanics, experiments have verified quantum mechanics and shown that measurements do not reveal pre-existing states.
KAN Talks 6: Quantum Physics for kids (By Srinivas)
About the presenter:
Srinivas is 10 years old. He is a part of Mango Astronomy Club. He is passionate about physics and astronomy. Enjoys sharing whatever he has learnt in science with his peers.
El Premio Nóbel de Física 2020
El Británico Roger Penrose por sus desarrollos teóricos sobre agujeros negros. La Estadounidense Andrea Ghez y el Alemán Reinhald Genzel por el hallazgo de un objeto súper masivo y compacto en el centro de nuestra galaxia.
Por:
Herman J. Mosquera Cuesta
Ingeniero Mecánico UdeA.
PhD en Astrofísica.
Tres investigadores han sido galardonados con el premio Nobel de Física de este año por sus descubrimientos sobre estos fenómenos supermasivos. Roger Penrose por demostrar su existencia según la teoría de la relatividad general y Reinhard Genzel y Andrea Ghez por demostrar que los agujeros negros son capaces de interferir en las órbitas de estrellas cercanas.
Los astrónomos Roger Penrose, Reinhard Genzel y Andrea Ghez se han hecho con el premio Nobel de Física de 2020. El primero de los científicos ha obtenido la mitad del galardón por la demostración fáctica de la existencia de los agujeros negros, siguiendo los preceptos de la teoría de la relatividad de Einstein. Los otros dos investigadores han sido distinguidos por el descubrimiento de un objeto supermasivo en el centro de la Vía Láctea, a unos 26.000 años luz de nuestro planeta.
Reinhard Genzel y Andrea Ghez descubrieron un agujero negro en el centro de la Vía Láctea comprobando la velocidad de las órbitas de sus estrellas circundantes.
“Los descubrimientos de los galardonados de este año han abierto nuevos caminos en el estudio de objetos compactos y supermasivos. Pero estos objetos exóticos todavía plantean muchas preguntas que piden respuestas y plantean nuevos retos de investigación en el futuro, no solo sobre la estructura interna de estos objetos masivos, sino también sobre cómo usar la teoría de la relatividad general en condiciones extremas”, ha declarado David Haviland, presidente del Comité Nobel de Física.
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Question 2 group 16
1. A wormhole is a theoretical passage through space-time that could create shortcuts across the universe by connecting distances or points in time.
2. Wormholes are consistent with Einstein's theory of general relativity but have only been conceptualized and have not been observed.
3. There are two types of wormholes theorized - Schwarzschild wormholes which are eternal black holes and traversable wormholes which could theoretically be crossed in both directions.
Gravitational wave.pptx
1) Gravitational waves are ripples in spacetime caused by accelerating massive objects like neutron stars or black holes.
2) Einstein predicted gravitational waves in his theory of general relativity and scientists have been working to detect them using detectors like LIGO.
3) In 2016, LIGO directly detected gravitational waves for the first time, confirming another prediction of general relativity and opening an new window to observe the universe.
Black hole
Hey I'm DIVYA SHREE NANDINI. I'm here with my new presentation on Black Hole. I'm sure you'll find it interesting. well first thing what is black hole- "Black hole, cosmic body of extremely intense gravity from which nothing, not even light, can escape. A black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star’s outer layers are blown away. The crushing weight of constituent matter falling in from all sides compresses the dying star to a point of zero volume and infinite density called the singularity." wanna know more about it then come with me. :)
Examples Of Disagree
The document discusses the Fundamental Fury roller coaster. It has a fast hydraulic launch that accelerates riders to over 250 km/h in 5 seconds. The coaster passes close to other sections of track, emphasizing its extreme nature. It is themed after fundamental particles and how violently they interact. The coaster tracks are colored cyan and purple to represent scientific color terms for subatomic particles. Dense evergreen trees surround much of the ride, providing scenery.
Quantum Theory - A Theory Which Completely Changed Our Understanding
This is an introductory blog on quantum theory. It explains as in how did the quantum leap start and lay the road to the current quantum regime.
Advaita Vedanta and Science
The document discusses concepts from Advaita Vedanta and how modern science echoes some of its realizations about the nature of reality. It covers topics like the non-dual nature of Brahman, the illusory and relative nature of the universe, the concept of multiple universes from Vedic texts like similarities to modern scientific theories like string theory and M-theory. It also discusses quantum phenomena like entanglement and how it challenges classical notions of space, time and causality based on observations echoing non-dualistic ideas of the oneness of existence.
The black hole
Black holes are regions of space where gravity is so strong that nothing, not even light, can escape. They form when large stars collapse at the end of their life cycles, squeezing matter into an infinitely small space where density and gravity become infinite. Albert Einstein first predicted black holes in 1916, and the term was coined by John Wheeler in 1967. At the center of a black hole is a gravitational singularity, and its powerful gravity is why black holes were long thought to be completely dark, though Hawking radiation shows they may emit some light.
John wheeler, physicist biocentrism dictates that human consciousness shapes...
Does the Universe Exist if We're Not Looking?
Eminent physicist John Wheeler says he has only enough time left to work on one idea: that human consciousness shapes not only the present but the past as well
This article is a "Verbatim" edition copied from the Internet into PDF. This article is worthy of a wide discemination as it connects the ungerse to human existence. It is ironic that Pythagoras stated "Now thyself first, then you will know the universe and God" (Paraphrased) while Aristotle stated "“Knowing yourself is the beginning of all wisdom.” ; these two (2) quotes, combined, state that it is wise to learn from cosmology as the universe is the state set for human existence and this is the idea of Biocentrism.
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
The document discusses arguments for the existence of an absolute truth and God, based on evidence from cosmology and physics. It covers:
1) Philosophical arguments that truth is absolute and knowable, not dependent on feelings or preferences.
2) Scientific evidence that supports the universe having a beginning, including the expanding universe discovered by Hubble, cosmic background radiation discovered by Penzias and Wilson, and temperature fluctuations detected by COBE.
3) This evidence is consistent with predictions of general relativity and the Big Bang theory, providing support for the cosmological argument that the beginning of the universe requires a cause outside of the universe, namely God.
Wormholes
Albert Einstein's theory of relativity established that space and time are interwoven into a single continuum known as spacetime. A wormhole is a hypothetical topological feature of spacetime that acts as a shortcut between two distant regions, allowing travel through the wormhole that would be faster than traveling the same distance normally. Traveling through a wormhole involves passing through a throat that connects the two mouths of the wormhole. While theoretically possible according to general relativity, wormholes would require exotic matter that violates the null energy condition to be stabilized and traversable. Current research focuses on stabilizing wormholes and minimizing the amount of exotic matter needed.
Wormholes
Albert Einstein's theory of relativity established that space and time are interwoven into a single continuum known as spacetime. A wormhole is a hypothetical topological feature of spacetime that acts as a shortcut between two distant regions, allowing travel through the wormhole that would be faster than traveling the same distance normally. Traveling through a wormhole involves passing through a throat that connects the two mouths of the wormhole. While theoretical wormholes could allow for faster-than-light travel, they would require exotic matter that violates the null energy condition to be stabilized. Considerable research focuses on finding ways to stabilize and minimize the amount of exotic matter needed for traversable wormholes.
RELATIVITY THEORY
The document discusses Albert Einstein's theories of special and general relativity. Special relativity introduced concepts like the constancy of the speed of light and reference frames. General relativity holds that gravity is not a force but a consequence of objects warping the geometry of spacetime. It predicts phenomena like light deflection near massive objects and gravitational time dilation, which were later confirmed. The document also provides background on the Michelson-Morley experiment and quotes from Einstein and Hawking about the implications of relativity theory.
Black holes FyQ
Scientists have three theories about the formation of black holes: 1) the smallest may have formed at the beginning of the universe, 2) the largest, called supermassive black holes, formed alongside the galaxies they reside in near the Big Bang, and 3) stellar black holes are created when large stars collapse in supernovae. Black holes have extreme gravity that warps spacetime, with theories that anything entering one would be instantly destroyed or may pass through unharmed.
exploring possibility of time travel and has it been done in past?
THis presentation discusses on the possibility of time travel and the takes of famous scientists on it and also that has it been done in past or not?
Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur Scientist
This essay evaluates the promise that superstring theory will culminate in a quantum theory of gravity that unifies all the forces of nature into one package. In particular, the proponents of superstring theory promise that it will show how all forces of nature are “unified” at high energies. The essay traces the history of string theory from its humble beginnings in the 1960s, to explain the scattering of sub-atomic particles, to its culmination as five different string theories that supposedly comprise a yet-to-be defined theory named M-theory. In contrast, this essay presents a simple theory of gravity based on entropy that is distributed throughout space. A surprising consequence of entropic gravity is that Newton’s constant, G, has been decreasing over the life of universe, which fulfills the unfulfilled promise made by string theorists. Moreover, this consequence can be tested experimentally, unlike string theory, which makes no testable predictions.
Astronomy - The Mother Of All Sciences
Astronomy is the science that deals with celestial objects and the universe. It began when early humans observed the sky out of curiosity and tried to make sense of it. Over time, civilizations built observatories and astronomy grew into a formalized science. Major developments included Ptolemy's geocentric model, improvements to telescopes, and the theories of relativity and the Big Bang. Modern astronomy involves studying phenomena like black holes, the formation of galaxies and stars, and searching for a theory of everything.
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
This document summarizes key points from a session on Christian apologetics that addressed whether absolute truth exists. It discusses how truth is absolute and knowable, and reviews arguments for why Christianity is true based on twelve points. These include cosmological arguments that the universe had a beginning based on scientific evidence like the expansion of the universe, cosmic background radiation, and galaxy seeds predicted by Einstein's theory of general relativity. The document examines debates between Christian apologists and atheist scientists on explaining how the universe could come from nothing without a creator.
EPR paradox
The document provides an overview of the EPR paradox proposed by Einstein, Podolsky and Rosen in 1935. The key points are:
1) The EPR paradox uses a thought experiment involving two entangled particles to argue that quantum mechanics provides an incomplete description of physical reality.
2) By measuring properties of one particle, corresponding properties of the distant entangled particle can be known instantaneously, appearing to violate relativistic constraints on information transfer.
3) While Einstein believed there were "hidden variables" not accounted for in quantum mechanics, experiments have verified quantum mechanics and shown that measurements do not reveal pre-existing states.
KAN Talks 6: Quantum Physics for kids (By Srinivas)
About the presenter:
Srinivas is 10 years old. He is a part of Mango Astronomy Club. He is passionate about physics and astronomy. Enjoys sharing whatever he has learnt in science with his peers.
El Premio Nóbel de Física 2020
El Británico Roger Penrose por sus desarrollos teóricos sobre agujeros negros. La Estadounidense Andrea Ghez y el Alemán Reinhald Genzel por el hallazgo de un objeto súper masivo y compacto en el centro de nuestra galaxia.
Por:
Herman J. Mosquera Cuesta
Ingeniero Mecánico UdeA.
PhD en Astrofísica.
Tres investigadores han sido galardonados con el premio Nobel de Física de este año por sus descubrimientos sobre estos fenómenos supermasivos. Roger Penrose por demostrar su existencia según la teoría de la relatividad general y Reinhard Genzel y Andrea Ghez por demostrar que los agujeros negros son capaces de interferir en las órbitas de estrellas cercanas.
Los astrónomos Roger Penrose, Reinhard Genzel y Andrea Ghez se han hecho con el premio Nobel de Física de 2020. El primero de los científicos ha obtenido la mitad del galardón por la demostración fáctica de la existencia de los agujeros negros, siguiendo los preceptos de la teoría de la relatividad de Einstein. Los otros dos investigadores han sido distinguidos por el descubrimiento de un objeto supermasivo en el centro de la Vía Láctea, a unos 26.000 años luz de nuestro planeta.
Reinhard Genzel y Andrea Ghez descubrieron un agujero negro en el centro de la Vía Láctea comprobando la velocidad de las órbitas de sus estrellas circundantes.
“Los descubrimientos de los galardonados de este año han abierto nuevos caminos en el estudio de objetos compactos y supermasivos. Pero estos objetos exóticos todavía plantean muchas preguntas que piden respuestas y plantean nuevos retos de investigación en el futuro, no solo sobre la estructura interna de estos objetos masivos, sino también sobre cómo usar la teoría de la relatividad general en condiciones extremas”, ha declarado David Haviland, presidente del Comité Nobel de Física.
Similar to Question 2 group 2 (20)
Quantum Theory - A Theory Which Completely Changed Our Understanding
Quantum Theory - A Theory Which Completely Changed Our Understanding
John wheeler, physicist biocentrism dictates that human consciousness shapes...
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Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
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exploring possibility of time travel and has it been done in past?
exploring possibility of time travel and has it been done in past?
Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur Scientist
Gravity: Superstrings or Entropy? A Modest Proffer from an Amateur Scientist
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
Class # 6. Does Absolute Truth Exist? A Basic Guide to Christian Apologetics
KAN Talks 6: Quantum Physics for kids (By Srinivas)
KAN Talks 6: Quantum Physics for kids (By Srinivas)
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Two groups of students, one in Italy and one in Belgium, conducted experiments with space suits and aluminum foil. They tested how aluminum foil affects electromagnetic signals by calling phones with and without foil. They also dropped balls on surfaces with and without aluminum protection to see how foil reduces impact. The results showed that aluminum foil can stop electromagnetic radiation and lessen the size and depth of impacts when enough layers are used.
Elevator c
An experiment was conducted with people standing on a scale in an elevator to measure changes in weight as the elevator moved up and down. When the elevator went up, participants' weight increased, and when it went down, their weight decreased. This is because as the elevator moves up, it pushes the person up, increasing the force they exert on the scale, while moving down does not provide that additional pushing force, so the measured weight is less.
Magnet ab
1) The document describes an experiment to investigate how the weight of a magnet changes when another magnet is brought near it.
2) When the magnets attract each other, the weight of the lower magnet decreases, and when they repel each other, the weight increases.
3) The Belgian and Italian schools that performed the experiment found similar results, though they used different distances.
Buoyancy c
1. The experiment measured how the buoyant force of different liquids affected the weight of objects by submerging a cube and nuts in distilled water, salt water, and oil and measuring the resultant force.
2. The results showed that the resultant force was always smaller than gravity, with salt water producing the greatest reduction in weight.
3. This demonstrated that salt water best simulates the lower gravity conditions on Mars out of the three liquids, as it most reduced the apparent weight of the objects.
Generating gravity ab
This document summarizes a student experiment to simulate gravity on a spacecraft. The experiment involved spinning glass tubes with attached masses to measure the time taken to make 10 revolutions. Heavier masses took less time to complete 10 revolutions than lighter masses. The results supported the theory that centrifugal force from spinning a spacecraft can generate artificial gravity for astronauts by pushing them towards the outer hull. The document also explained how circular motion and centripetal acceleration relate to creating gravity in space.
Elevator ab
1) Students conducted an experiment to measure changes in weight when riding in an elevator.
2) They used a balance, elevator, camera, and chronometer to record weight while the elevator moved up and down.
3) The results showed that weight increased when the elevator moved down due to gravitational acceleration, and weight decreased when moving up due to deceleration.
Astronauts suit ab
The document summarizes two experiments conducted by Belgian and Italian students to test whether aluminum can protect astronauts from solar radiation and micrometeorites.
The first experiment tested whether aluminum foil could block electromagnetic waves by making phone calls to phones with and without aluminum wrapping. The second experiment dropped balls made of different materials into containers of sand with and without overlying aluminum foil to compare impact sizes.
Both groups found that aluminum blocked electromagnetic waves like solar radiation. They agreed aluminum reduced impact size but the Italians concluded it could fully protect against micrometeorites while the Belgians weren't certain it provided full protection.
Slope ab
Two groups of students - one from Belgium and one from Italy - conducted an experiment to measure the effect of slope on measured weight. They used kitchen scales and a balance scale to measure the weight of objects and people on slopes of varying angles. Both groups found that measured weight decreased with increased slope steepness. However, the Italian group found a greater change in measured weight over different slopes compared to the Belgian group, indicating the slopes in the Italian school were generally steeper.
Magnet on balance c
The students conducted an experiment to determine how the weight of a magnet is affected when another magnet is held above it. They found that if two magnets of the same polarity are held above each other, they repel and the weight increases, while if two magnets of opposite polarity are held above each other, they attract and the weight decreases. The results were the same in both Belgium and Italy because they can be explained by the Law of Universal Gravitation.
Generating gravity c
- Students conducted an experiment to investigate how to generate artificial gravity by spinning a spacecraft. They measured how the time it took to spin rubber caps attached to different masses changed when the mass or spin velocity was altered.
- The Belgian group found that heavier masses required faster spin speeds to remain attached to the rubber caps. The Italian group found that increasing the spin velocity allowed heavier masses to be elevated and that larger spin radii required lighter masses to remain attached.
- The experiment demonstrated that artificial gravity can be generated on a spacecraft by spinning and that both spin speed and radius impact the amount of gravity generated.
Buoyancy ab
The document describes an experiment to measure the effect of different liquids on the apparent weight of objects. Cubes and nuts were measured in distilled water, salt water, and oil. The results showed weight decreased most in oil due to its lower density, similar to how gravity is lower on Mars. While results matched theory, some differences occurred in practice between salt water and oil. The pulling up force from liquids causes apparent weight to decrease as buoyancy increases.
Summary physics
This document discusses several physics experiments related to weight and gravity. It describes experiments to determine how weight is affected by an elevator's movement, slope, nearby magnets, and different liquid environments. The document also explores how centrifugal force from a spinning mass can generate gravity and how aluminum foil can block electromagnetic signals and reduce impact. Key conclusions are that weight increases in an upward elevator, decreases on slopes and near attracting magnets, and is lowest in salt water due to buoyancy.
Buoyancy italy
This physics experiment tested how buoyancy changes with different liquids using a force sensor to measure the weight of objects submerged in distilled water, salt water, and oil. The experiment measured the weight of a cube and nuts in air and then in each liquid. As the density of the liquid increased from distilled water to salt water to oil, the measured weight of the submerged objects decreased, showing that buoyancy increases with the density of the surrounding liquid.
Question 5 group 12
1) The document discusses Newton's third law of motion and how it applies to Brand escaping the black hole in the movie Interstellar.
2) It explains that Cooper detaches his ship, applying a force, which by Newton's third law pushes Brand's ship in the opposite direction, allowing her to escape in a slingshot motion.
3) However, the third law requires equal and opposite forces, and escaping the black hole's strong gravity would require a large force from fuel, which they had already used up. Therefore, the third law alone could not be used to escape the black hole without an additional energy source like fuel.
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Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...
Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.
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Alternate Wetting and Drying - Climate Smart Agriculture
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Hello Everyone Here We are Sharing You with The process of protien Synthesis in very short points you will be Able to understand It Very well
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
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+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
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Thematic analysis in qualitative research is a time-consuming and systematic task, typically done using teams. Team members must ground their activities on common understandings of the major concepts underlying the thematic analysis, and define criteria for its development. However, conceptual misunderstandings, equivocations, and lack of adherence to criteria are challenges to the quality and speed of this process. Given the distributed and uncertain nature of this process, we wondered if the tasks in thematic analysis could be supported by readily available artificial intelligence chatbots. Our early efforts point to potential benefits: not just saving time in the coding process but better adherence to criteria and grounding, by increasing triangulation between humans and artificial intelligence. This tutorial will provide a description and demonstration of the process we followed, as two academic researchers, to develop a custom ChatGPT to assist with qualitative coding in the thematic data analysis process of immersive learning accounts in a survey of the academic literature: QUAL-E Immersive Learning Thematic Analysis Helper. In the hands-on time, participants will try out QUAL-E and develop their ideas for their own qualitative coding ChatGPT. Participants that have the paid ChatGPT Plus subscription can create a draft of their assistants. The organizers will provide course materials and slide deck that participants will be able to utilize to continue development of their custom GPT. The paid subscription to ChatGPT Plus is not required to participate in this workshop, just for trying out personal GPTs during it.
JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS
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The binding of cosmological structures by massless topological defects
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equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
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◇企事业单位必须要求办理的
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◇申请留学生创业基金
留信网认证的作用:
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6:个人职称评审加20分
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Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
11.1 Role of physical biological in deterioration of grains.pdf
Storagedeteriorationisanyformoflossinquantityandqualityofbio-materials.
Themajorcausesofdeteriorationinstorage
•Physical
•Biological
•Mechanical
•Chemical
Storageonlypreservesquality.Itneverimprovesquality.
Itisadvisabletostartstoragewithqualityfoodproduct.Productwithinitialpoorqualityquicklydepreciates
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Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
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2.Back Titration
3.Replacement Titration
4.Indirect Titration
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formation of complex
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Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
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Complex titration with EDTA.
CLASS 12th CHEMISTRY SOLID STATE ppt (Animated)
Description:
Dive into the fascinating realm of solid-state physics with our meticulously crafted online PowerPoint presentation. This immersive educational resource offers a comprehensive exploration of the fundamental concepts, theories, and applications within the realm of solid-state physics.
From crystalline structures to semiconductor devices, this presentation delves into the intricate principles governing the behavior of solids, providing clear explanations and illustrative examples to enhance understanding. Whether you're a student delving into the subject for the first time or a seasoned researcher seeking to deepen your knowledge, our presentation offers valuable insights and in-depth analyses to cater to various levels of expertise.
Key topics covered include:
Crystal Structures: Unravel the mysteries of crystalline arrangements and their significance in determining material properties.
Band Theory: Explore the electronic band structure of solids and understand how it influences their conductive properties.
Semiconductor Physics: Delve into the behavior of semiconductors, including doping, carrier transport, and device applications.
Magnetic Properties: Investigate the magnetic behavior of solids, including ferromagnetism, antiferromagnetism, and ferrimagnetism.
Optical Properties: Examine the interaction of light with solids, including absorption, reflection, and transmission phenomena.
With visually engaging slides, informative content, and interactive elements, our online PowerPoint presentation serves as a valuable resource for students, educators, and enthusiasts alike, facilitating a deeper understanding of the captivating world of solid-state physics. Explore the intricacies of solid-state materials and unlock the secrets behind their remarkable properties with our comprehensive presentation.
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
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Question 2 group 2
- 1. Interstellar
- 2. Who was the first scientist to talk about wormholes?
- 3. Who was the scientist? • Albert Einstein and Nathan Rosen • Einstein-Rosen bridges • No use of the term yet. • Theory: Electromagnetic field energy
- 4. Who was the scientist? • John Wheeler: first us of “wormhole” • Used in 1957 • Paper co-authored by Charles Misner
- 5. Do wormholes really exist? • Scientists have different opinions about this question…
- 6. YES, THEY EXIST! • Eric Davis (Senior Research Physicist at the Institute for Advanced Studies, Austin): • “Wormholes should exist in nature, because they are predicted by Einstein’s theory of general relativity which is the theory that also predicted black holes, cosmology, neutron stars […] • There is no reason why wormholes should not exist based on a very well tested theory whose other predictions have been verified as previously mentioned.”
- 7. NO, THEY DON’T EXIST! • Professor Andreas Karch, (professor of physics at the University of Washington): • “I would completely agree that most likely they are just a theoretical construct. It’s very unlikely that we will ever see the more standard kind of wormhole – the one that you could transverse through, as seen in science fiction movies. • One could not measure the existence of a wormhole directly without sending two observers into the two connected black holes (which could also form the basis of a wormhole). If they meet in the middle, there’s a wormhole. If not, then there’s no wormhole.”
- 8. And from NASA’s point of view… • Wormholes are allowed to exist in the math of "General Relativity", which is our best description of the Universe. Assuming that general relativity is correct, there may be wormholes. But no one has any idea how they would be created, and there is no evidence for anything like a wormhole in the observed Universe.
- 9. HOW DOES A WORMHOLE WORK? • It’s a tunnel through space and time • Theory of relativity • Connections between different places • This is a manipulation of gravity