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.
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. :)
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. :)
The First Annual Robert Grosseteste Lecture on Astrophysics/Cosmology, a public talk given at the University of Lincoln.
The lecture focusses on the large-scale structure of the Universe and the ideas that physicists are weaving together to explain how it came to be the way it is. Over the last few decades, astronomers have revealed that our cosmos is not only vast in scale – at least 14 billion light years in radius – but also exceedingly complex, with galaxies and clusters of galaxies linked together in immense chains and sheets, surrounding giant voids of (apparently) empty space. Cosmologists have developed theoretical explanations for its origin that involve such exotic concepts as ‘dark matter’, ‘dark energy’ and ‘cosmic inflation’, producing a cosmic web of ideas that is, in some ways, as rich and fascinating as the Universe itself.
Black holes are the most mysterious objects in the Universe. Black holes are huge hungry monsters which even devours light. Yes, even light cannot escape the black hole.
Dr. Paul LaViolette's Subquantum Kinetics is the second of the scientific theories we consider fundamental to understanding and applying New Energy -- limitless, cheap, clean energy from the quantum vacuum.
The big bang and the hawking radiation in a photonic dominated space timeEran Sinbar
Hawking radiation is the black hole radiation due to quantum effects near the black hole event horizon in empty space (vacuum). It is actually the evaporation process of the black hole since it generates and radiates a real particle out of empty space and losses the same energy back into the empty space. This paper tries to analyze what will happen if the black hole will be located in a space filled with energy, dominated by highly energetic Gamma ray photons. This paper suggests that the Hawking radiation due to quantum effects near the black hole event horizon in a space dominated by highly energetic photonic radiation will cause the extreme expansion of space and can explain the inflation phase of the Big Bang.
One of the important discoveries of New Energy scientists over the past two decades has been that Planck's values for mass, time, and length are probably not constant as was once believed. They only seemed constant because humanity had yet to find effective ways of varying the density of the Zero Point Field in a given area. Now that we are developing this ability, many fascinating new technologies are on the horizon.
In this section, we address the common accusation made by mainstream scientists that New Energy inventors are wasting their time by attempting to "violate the Law of Conservation of Energy". We see that once the non-physical dimensions of time-space are taken into account, there is no violation of COE.
Journey Through the Cosmos: Exploring Black Holes & Dr. Stephen Hawking's Leg...TUHIN SAHA
Title: Journey Through the Cosmos: Exploring Black Holes & Dr. Stephen Hawking's Legacy
Embark on a captivating journey through the depths of space and the brilliant mind of one of history's most renowned scientists, Dr. Stephen Hawking. In this enlightening presentation, we delve into the enigmatic phenomenon of Black Holes, their mysterious nature, and the groundbreaking discoveries that have shaped our understanding of the universe.
Unlock the secrets of these celestial wonders as we explore topics such as the fundamental question: What is a Black Hole? Delve into the gripping tale of their discovery and unravel the intricate process of their formation. From the mind-bending structure of Black Holes to the various types that exist across the cosmos, each slide unveils a new layer of cosmic intrigue.
But what happens if someone were to venture too close, falling into the gravitational abyss of a Black Hole? Discover the scientific speculation and theories that surround this captivating scenario, offering insight into the ultimate fate of such an intrepid explorer.
Moreover, journey through the extraordinary life and groundbreaking research of Dr. Stephen Hawking, a visionary whose contributions to theoretical physics revolutionized our understanding of the cosmos. Explore the trials and triumphs of his remarkable journey, from his early years to his groundbreaking work on Black Holes and beyond.
It is said that fact is sometimes stranger than fiction, and nowhere is this more true than in the case of black holes. Black holes are stranger than anything dreamt up by science fiction writers, but they are firmly matters of science ~fact.
The First Annual Robert Grosseteste Lecture on Astrophysics/Cosmology, a public talk given at the University of Lincoln.
The lecture focusses on the large-scale structure of the Universe and the ideas that physicists are weaving together to explain how it came to be the way it is. Over the last few decades, astronomers have revealed that our cosmos is not only vast in scale – at least 14 billion light years in radius – but also exceedingly complex, with galaxies and clusters of galaxies linked together in immense chains and sheets, surrounding giant voids of (apparently) empty space. Cosmologists have developed theoretical explanations for its origin that involve such exotic concepts as ‘dark matter’, ‘dark energy’ and ‘cosmic inflation’, producing a cosmic web of ideas that is, in some ways, as rich and fascinating as the Universe itself.
Black holes are the most mysterious objects in the Universe. Black holes are huge hungry monsters which even devours light. Yes, even light cannot escape the black hole.
Dr. Paul LaViolette's Subquantum Kinetics is the second of the scientific theories we consider fundamental to understanding and applying New Energy -- limitless, cheap, clean energy from the quantum vacuum.
The big bang and the hawking radiation in a photonic dominated space timeEran Sinbar
Hawking radiation is the black hole radiation due to quantum effects near the black hole event horizon in empty space (vacuum). It is actually the evaporation process of the black hole since it generates and radiates a real particle out of empty space and losses the same energy back into the empty space. This paper tries to analyze what will happen if the black hole will be located in a space filled with energy, dominated by highly energetic Gamma ray photons. This paper suggests that the Hawking radiation due to quantum effects near the black hole event horizon in a space dominated by highly energetic photonic radiation will cause the extreme expansion of space and can explain the inflation phase of the Big Bang.
One of the important discoveries of New Energy scientists over the past two decades has been that Planck's values for mass, time, and length are probably not constant as was once believed. They only seemed constant because humanity had yet to find effective ways of varying the density of the Zero Point Field in a given area. Now that we are developing this ability, many fascinating new technologies are on the horizon.
In this section, we address the common accusation made by mainstream scientists that New Energy inventors are wasting their time by attempting to "violate the Law of Conservation of Energy". We see that once the non-physical dimensions of time-space are taken into account, there is no violation of COE.
Journey Through the Cosmos: Exploring Black Holes & Dr. Stephen Hawking's Leg...TUHIN SAHA
Title: Journey Through the Cosmos: Exploring Black Holes & Dr. Stephen Hawking's Legacy
Embark on a captivating journey through the depths of space and the brilliant mind of one of history's most renowned scientists, Dr. Stephen Hawking. In this enlightening presentation, we delve into the enigmatic phenomenon of Black Holes, their mysterious nature, and the groundbreaking discoveries that have shaped our understanding of the universe.
Unlock the secrets of these celestial wonders as we explore topics such as the fundamental question: What is a Black Hole? Delve into the gripping tale of their discovery and unravel the intricate process of their formation. From the mind-bending structure of Black Holes to the various types that exist across the cosmos, each slide unveils a new layer of cosmic intrigue.
But what happens if someone were to venture too close, falling into the gravitational abyss of a Black Hole? Discover the scientific speculation and theories that surround this captivating scenario, offering insight into the ultimate fate of such an intrepid explorer.
Moreover, journey through the extraordinary life and groundbreaking research of Dr. Stephen Hawking, a visionary whose contributions to theoretical physics revolutionized our understanding of the cosmos. Explore the trials and triumphs of his remarkable journey, from his early years to his groundbreaking work on Black Holes and beyond.
It is said that fact is sometimes stranger than fiction, and nowhere is this more true than in the case of black holes. Black holes are stranger than anything dreamt up by science fiction writers, but they are firmly matters of science ~fact.
Black Holes are one of the most weirdest objects in the universe, scientist cant study them because they are very mysterious, In short, we can only predict them that how their fundamental structure might be.......You wanna explore?
"Black holes are where God divided by zero" - Albert Einstein
Black hole – A region in the space where the gravitational pull is so strong that neither substance nor light can leave this area.
search on NASA site also go through the latest news related to black holes before presenting your seminar.
many queries are asked related to black holes.
present the astronomical data's for Good delivery of seminar.In the 18th century John Michell and Pierre-Simon Laplace first mentioned about the objects with a huge gravitation, from which even light cannot escape.
In 1915 Albert Einstein developed the theory of general relativity.
Karl Schwarzschild finds black holes as a solution to Einstein’s equations (1916)
Robert Oppenheimer and Hartland Snyder predict that massive stars can collapse into black holes (1939)
A black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull.”
Black holes are exotic structures whose gravitational fields are so powerful that they trap everything, even light. They were first postulated by Albert Einstein's theory of general relativity.”
This can happen when a star is dying.
Though they are black they are invisible to us.
The density of a black hole is so great it would be like taking the whole Earth and crushing into a volume smaller than a 1” marble!.
Stellar-mass: 3 to 20 times the mass of our Sun
Supermassive: Black holes with millions to billions of times the mass of our Sun
Mid-mass: In between stellar-mass and supermassive.
2. What is a black hole?
A black hole is an object that is so compact (in other words, has enough
mass in a small enough volume) that its gravitational force is strong enough
to prevent light or anything else from escaping.
The existence of black holes was first proposed in the 18th century, based
on the known laws of gravity. The more massive an object, or the smaller its
size, the larger the gravitational force felt on its surface. John Michell and
Pierre-Simon Laplace both independently argued that if an object were
either extremely massive or extremely small, it might not be possible at all to
escape its gravity. Even light could be forever captured.
3. Do Black Holes Obey the Laws of Gravity?
• Black holes obey all laws of physics, including the laws
of gravity. Their remarkable properties are in fact a
direct consequence of gravity.
•
In 1687, Isaac Newton showed that all objects in the
Universe attract each other through gravity. Gravity is
actually one of the weakest forces known to physics. In
our daily life, other forces from electricity, magnetism, or
pressure often exert a stronger influence. However,
gravity shapes our Universe because it makes itself felt
over large distances. For example, Newton showed that
his laws of gravity can explain the observed motions of
the moons and planets in the Solar System.
4. How big is a black hole?
All matter in a black hole is squeezed into a region of infinitely small volume,
called the central singularity. The event horizon is an imaginary sphere that
measures how close to the singularity you can safely get. Once you have
passed the event horizon, it becomes impossible to escape: you will be
drawn in by the black hole's gravitational pull and squashed into the
singularity.
5. What is inside a black hole?
We cannot glimpse what lies inside the event horizon of a black hole
because light or material from there can never reach us. Even if we
could send an explorer into the black hole, she could never
communicate back to us.
Current theories predict that all the matter in a black hole is piled up
in a single point at the center, but we do not understand how this
central singularity works. To properly understand the black hole
center requires a fusion of the theory of gravity with the theory that
describes the behavior of matter on the smallest scales, called
quantum mechanics. This unifying theory has already been given a
name, quantum gravity, but how it works is still unknown. This is one
of the most important unsolved problems in physics. Studies of black
holes may one day provide the key to unlock this mystery.
6. Can a black hole bend light rays?
Imagine that you are in orbit around a black hole at a safe distance
outside the event horizon. What would the sky look like? Normally
you would just see the background stars steadily sliding by, due to
your own orbital motion. But the gravitational force of a black hole
changes things considerably.
7. What instruments do astronomers use to find black holes?
When our eyes look at the heavens we see the visible light from
stars and other objects in the Universe. Thousands of years ago
astronomers in Greece and other ancient cultures already built a
detailed understanding of the night sky. Many names and concepts
then developed are still in use today. However, our human eyes are
actually not very sensitive and modern astronomers use
sophisticated telescopes to study the Universe.
The telescopes used by astronomers do not just study visible light.
While visible light is the type of 'electromagnetic radiation' that our
eyes can see, there are many other types of such radiation.
Different types of radiation are characterized by different
wavelengths. If the wavelength is much shorter than that of visible
light we speak about X-rays. We encounter X-rays often in our daily
lives, for example at the hospital or during security screening. If the
wavelength is much larger than that of visible light we speak about
radio waves. We encounter radio waves often in our daily lives, for
example in radios and cell phones.
8. How are black holes born?
A black hole is born when an object becomes unable to withstand the
compressing force of its own gravity. Many objects (including our Earth
and Sun) will never become black holes. Their gravity is not sufficient to
overpower the atomic and nuclear forces of their interiors, which resist
compression. But in more massive objects, gravity ultimately wins.
9. As you fall toward the black hole, you move faster and faster,
accelerated by its gravity. Your feet feel a stronger
gravitational pull than your head, because they are closer to
the black hole. As a result, your body is stretched apart. For
small black holes, this stretching is so strong that your body is
completely torn apart before you reach the event horizon.
If you fall into a supermassive black hole, your body remains
intact, even as you cross the event horizon. But soon
thereafter you reach the central singularity, where you are
squashed into a single point of infinite density. You have
become one with the black hole. Unfortunately, you are
unable to write home about the experience.
What happens when I fall into a
black hole?
10. How many black holes are there?
There are so many black holes in the Universe that it is impossible to count
them. It's like asking how many grains of sand are on the beach. Fortunately,
the Universe is enormous and none of its known black holes are close enough
to pose any danger to Earth.
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17. CONCLUSION
AT LAST I FINISHED DOING MY PROJECT . I WOULD LIKE TO THANK
OUR PHYSICS TEACHER SIR JACOB WHO GAVE US THE GOLDEN
OPPORTUNITY TO DO THIS PROJECT . I GOT LOT OF INFORMATION
ABOUT BLACK HOLE.
THANK YOU