Time travel is one of my favorite topics! I wrote some time travel stories in junior high school that used a machine of my own invention to travel backwards in time, and I have continued to study this fascinating concept as the years have gone by. We all travel in time. During the last year, I've moved forward one year and so have you. Another way to say that is that we travel in time at the rate of 1 hour per hour.
But the question is, can we travel in time faster or slower than "1 hour per hour"? Or can we actually travel backward in time, going back, say 2 hours per hour, or 10 or 100 years per hour?
It is mind-boggling to think about time travel. What if you went back in time and prevented your father and mother from meeting? You would prevent yourself from ever having been born! But then if you hadn't been born, you could not have gone back in time to prevent them from meeting.
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!!!!
The Benefits Of Time Travel
The Value of Time Travel Essay
Essay Time Travel
Time Travel
Essay on Time Travel
Is Time Travel Possible? Essay
time travel Essay
Advantages Of Time Travel
Time Travel
Time Travel
Time Travel : Or Apocalyptic?
Time Travel : Science Fiction
Essay on Exploring Time Travel
In this presentation, I am discussing about possibilities and Including various concepts and Theories related to Time Travel.
I HOPE YOU ALL WILL LIKE THIS PRESENTATION
Time travel is one of my favorite topics! I wrote some time travel stories in junior high school that used a machine of my own invention to travel backwards in time, and I have continued to study this fascinating concept as the years have gone by. We all travel in time. During the last year, I've moved forward one year and so have you. Another way to say that is that we travel in time at the rate of 1 hour per hour.
But the question is, can we travel in time faster or slower than "1 hour per hour"? Or can we actually travel backward in time, going back, say 2 hours per hour, or 10 or 100 years per hour?
It is mind-boggling to think about time travel. What if you went back in time and prevented your father and mother from meeting? You would prevent yourself from ever having been born! But then if you hadn't been born, you could not have gone back in time to prevent them from meeting.
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!!!!
The Benefits Of Time Travel
The Value of Time Travel Essay
Essay Time Travel
Time Travel
Essay on Time Travel
Is Time Travel Possible? Essay
time travel Essay
Advantages Of Time Travel
Time Travel
Time Travel
Time Travel : Or Apocalyptic?
Time Travel : Science Fiction
Essay on Exploring Time Travel
In this presentation, I am discussing about possibilities and Including various concepts and Theories related to Time Travel.
I HOPE YOU ALL WILL LIKE THIS PRESENTATION
Time travel refers to the theoretical concept of moving between different points in time. While it remains a staple in science fiction, actual time travel has not been demonstrated or proven possible according to our current understanding of physics. Theories like those involving wormholes or time dilation, as proposed by Einstein's theory of relativity, suggest potential pathways for time manipulation, but the practical realization of such concepts faces significant scientific and technological challenges. Time travel discussions often delve into paradoxes, such as the famous "grandfather paradox," where altering the past could lead to contradictory situations. Despite its intriguing nature, time travel remains speculative, and no concrete evidence or practical implementation has been achieved to date.
hello, friends it time for new scientific consideration ,usually what we think how time pass away,,,,,,,,,o come on i wish to get back in past...also in future......what you say???...take a look........
This is a presentation on time travelling, here i mainly focused on main sub topics to understand the concept of time travelling, i.e.
1) Parallel Space
2) Paradox
3) How to travel through time
4) Evidence
Interstellar Communication Theories and its PossibilitiesIJMER
Â
This paper reviews and discusses the research dimensions in four dimensional time travel and
time dependencies of future and past on the basis of present. The paper investigates the theories that
support time travel in any manner and explore possibilities based on them for interstellar communication
An exciting qualitative review of some controversial topics of fundamental physics.
Black holes, a reality far from our minds!
Time travel, Science Fiction or Reality?
Chapter 1 - Our Picture of the UniverseChapter 2 - Space and.docxcravennichole326
Â
Chapter 1 - Our Picture of the Universe
Chapter 2 - Space and Time
Chapter 3 - The Expanding Universe
Chapter 4 - The Uncertainty Principle
Chapter 5 - Elementary Particles and the Forces of Nature
Chapter 6 - Black Holes
Chapter 7 - Black Holes Ain't So Black
Chapter 8 - The Origin and Fate of the Universe
Chapter 9 - The Arrow of Time
Chapter 10 - Wormholes and Time Travel
Chapter 11 - The Unification of Physics
Chapter 12 - Conclusion
Glossary
Acknowledgments & About The Author
FOREWARD
I didnât write a foreword to the original edition of A Brief History of Time. That was done by Carl Sagan. Instead,
I wrote a short piece titled âAcknowledgmentsâ in which I was advised to thank everyone. Some of the
foundations that had given me support werenât too pleased to have been mentioned, however, because it led to
a great increase in applications.
I donât think anyone, my publishers, my agent, or myself, expected the book to do anything like as well as it did.
It was in the London Sunday Times best-seller list for 237 weeks, longer than any other book (apparently, the
Bible and Shakespeare arenât counted). It has been translated into something like forty languages and has sold
about one copy for every 750 men, women, and children in the world. As Nathan Myhrvold of Microsoft (a
former post-doc of mine) remarked: I have sold more books on physics than Madonna has on sex.
The success of A Brief History indicates that there is widespread interest in the big questions like: Where did
we come from? And why is the universe the way it is?
I have taken the opportunity to update the book and include new theoretical and observational results obtained
since the book was first published (on April Foolsâ Day, 1988). I have included a new chapter on wormholes
and time travel. Einsteinâs General Theory of Relativity seems to offer the possibility that we could create and
maintain wormholes, little tubes that connect different regions of space-time. If so, we might be able to use
them for rapid travel around the galaxy or travel back in time. Of course, we have not seen anyone from the
A Brief History of Time - Stephen Hawking
file:///C|/WINDOWS/Desktop/blahh/Stephen Hawking - A brief history of time/A Brief History in Time.html (1 of 2) [2/20/2001 3:13:58 AM]
future (or have we?) but I discuss a possible explanation for this.
I also describe the progress that has been made recently in finding âdualitiesâ or correspondences between
apparently different theories of physics. These correspondences are a strong indication that there is a complete
unified theory of physics, but they also suggest that it may not be possible to express this theory in a single
fundamental formulation. Instead, we may have to use different reflections of the underlying theory in different
situations. It might be like our being unable to represent the surface of the earth on a single map and having to
use different maps in different regions. This would be a revolution in our v ...
Multi-source connectivity as the driver of solar wind variability in the heli...SĂŠrgio Sacani
Â
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASAâs Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly AlfvĂŠnic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5âau
but are applicable to near-Earth observatories.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Â
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), NiĹĄ, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
More Related Content
Similar to exploring possibility of time travel and has it been done in past?
Time travel refers to the theoretical concept of moving between different points in time. While it remains a staple in science fiction, actual time travel has not been demonstrated or proven possible according to our current understanding of physics. Theories like those involving wormholes or time dilation, as proposed by Einstein's theory of relativity, suggest potential pathways for time manipulation, but the practical realization of such concepts faces significant scientific and technological challenges. Time travel discussions often delve into paradoxes, such as the famous "grandfather paradox," where altering the past could lead to contradictory situations. Despite its intriguing nature, time travel remains speculative, and no concrete evidence or practical implementation has been achieved to date.
hello, friends it time for new scientific consideration ,usually what we think how time pass away,,,,,,,,,o come on i wish to get back in past...also in future......what you say???...take a look........
This is a presentation on time travelling, here i mainly focused on main sub topics to understand the concept of time travelling, i.e.
1) Parallel Space
2) Paradox
3) How to travel through time
4) Evidence
Interstellar Communication Theories and its PossibilitiesIJMER
Â
This paper reviews and discusses the research dimensions in four dimensional time travel and
time dependencies of future and past on the basis of present. The paper investigates the theories that
support time travel in any manner and explore possibilities based on them for interstellar communication
An exciting qualitative review of some controversial topics of fundamental physics.
Black holes, a reality far from our minds!
Time travel, Science Fiction or Reality?
Chapter 1 - Our Picture of the UniverseChapter 2 - Space and.docxcravennichole326
Â
Chapter 1 - Our Picture of the Universe
Chapter 2 - Space and Time
Chapter 3 - The Expanding Universe
Chapter 4 - The Uncertainty Principle
Chapter 5 - Elementary Particles and the Forces of Nature
Chapter 6 - Black Holes
Chapter 7 - Black Holes Ain't So Black
Chapter 8 - The Origin and Fate of the Universe
Chapter 9 - The Arrow of Time
Chapter 10 - Wormholes and Time Travel
Chapter 11 - The Unification of Physics
Chapter 12 - Conclusion
Glossary
Acknowledgments & About The Author
FOREWARD
I didnât write a foreword to the original edition of A Brief History of Time. That was done by Carl Sagan. Instead,
I wrote a short piece titled âAcknowledgmentsâ in which I was advised to thank everyone. Some of the
foundations that had given me support werenât too pleased to have been mentioned, however, because it led to
a great increase in applications.
I donât think anyone, my publishers, my agent, or myself, expected the book to do anything like as well as it did.
It was in the London Sunday Times best-seller list for 237 weeks, longer than any other book (apparently, the
Bible and Shakespeare arenât counted). It has been translated into something like forty languages and has sold
about one copy for every 750 men, women, and children in the world. As Nathan Myhrvold of Microsoft (a
former post-doc of mine) remarked: I have sold more books on physics than Madonna has on sex.
The success of A Brief History indicates that there is widespread interest in the big questions like: Where did
we come from? And why is the universe the way it is?
I have taken the opportunity to update the book and include new theoretical and observational results obtained
since the book was first published (on April Foolsâ Day, 1988). I have included a new chapter on wormholes
and time travel. Einsteinâs General Theory of Relativity seems to offer the possibility that we could create and
maintain wormholes, little tubes that connect different regions of space-time. If so, we might be able to use
them for rapid travel around the galaxy or travel back in time. Of course, we have not seen anyone from the
A Brief History of Time - Stephen Hawking
file:///C|/WINDOWS/Desktop/blahh/Stephen Hawking - A brief history of time/A Brief History in Time.html (1 of 2) [2/20/2001 3:13:58 AM]
future (or have we?) but I discuss a possible explanation for this.
I also describe the progress that has been made recently in finding âdualitiesâ or correspondences between
apparently different theories of physics. These correspondences are a strong indication that there is a complete
unified theory of physics, but they also suggest that it may not be possible to express this theory in a single
fundamental formulation. Instead, we may have to use different reflections of the underlying theory in different
situations. It might be like our being unable to represent the surface of the earth on a single map and having to
use different maps in different regions. This would be a revolution in our v ...
Similar to exploring possibility of time travel and has it been done in past? (20)
Multi-source connectivity as the driver of solar wind variability in the heli...SĂŠrgio Sacani
Â
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASAâs Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly AlfvĂŠnic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5âau
but are applicable to near-Earth observatories.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Â
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), NiĹĄ, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana LuĂsa Pinho
Â
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Â
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The systemâs unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leberâs hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendelâs laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four Oâclock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.SĂŠrgio Sacani
Â
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Richard's aventures in two entangled wonderlandsRichard Gill
Â
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Professional air quality monitoring systems provide immediate, on-site data for analysis, compliance, and decision-making.
Monitor common gases, weather parameters, particulates.
2. WHAT EXACTLY IS TIME ?
ďMost people think time is constant.
ďPhysicist Albert Einstein showed that it was merely a illusion
ďTime depending on oneâs speed through a space
ďEinstein declared time as a fourth dimension
ďTime only provides a coordinate direction which only moves
forward
3. WHAT IS TIME TRAVEL
⢠Firstly we should get to know that what is TIME TRAVEL?
⢠Time travel is the concept of movement between certain points of time according to the movement
between different points in space by an object or a person, typically using a hypothetical device known
as time machine, in the form of vehicle or portal connecting distant points in space-time, either to an
earlier time or to an later time, without the need for the time travelling body to experiencing the
intervening period in usual sense.
⢠Time travel is widely recognised concept in philosophy and fiction.
4. EVIDENCE OF TIME TRAVEL IN OUR HISTORY
ďś700 BC: THE Mahabharata (Ancient India): story
of King Raivata Kakudmi.
ďśBuddhist PÄli Canon mentions the relativity of
time in the Payasi Sutra.
ďśJapanese tale of Urashima Taru.
ď200s to 400s CE : The Talmud
5. POSSIBILITIES OF TIME TRAVEL
⢠Most of the scientist agree to the point that time travelling to future is possible but it is uncertain that
time travelling to past is really possible or not
⢠Forward time travel is possible according to special relativity and general relativity, although making a
body advance or delay more than a few seconds compared to another body is not possible with current
technology.
⢠As for backwards time travel, it is possible to find solution in general relativity that allow for it, but the
solutions requires the condition that may be not physically possible.
However , travelling to a self-willing point in space time has a very limited support in theoretical physics,
and usually only connected with QUANTUM MECHANICS or WORMHOLES, also known as Einstein-Rosen
Bridges.
6. ⢠It is generally understood that travelling forward or back in time would require a device- a time
machine- to take you there
⢠Time machine often involves bending the fabric of space-time so far that the lines turn on back
themselves to form a loop, technically known as âclosed time like curve.â
⢠The doctorâs time machine is so called TARDIS, which stands for Time And Relative Dimensions In Space.
A way to travel in time
7. PROBLEMS OF PARADOXES
⢠If we are able to develop a workable theory for time travel, we would open up the ability to create very
complicated problems called Paradoxes.
⢠A paradox is a statement that contradicts itself. Possibly the most famous paradox is grandfather
paradox. What would happen if a time traveller went back in time and killed one of his or her ancestors
before the traveller was born?
⢠If a person killed his/her grandfather how could that person be alive to go back and kill his/her
grandfather? If we could change the past it would create the infinite no. of paradoxes.
8. ALTERNATE THEORY OF TIME TRAVEL
⢠Another theory regarding time travel brings up the idea of the parallel universes, or alternative
histories.
⢠Let us consider the grandfather paradox again. Lets say that you travel to meet your grandfather when
he was a boy, so you have travelled to another universe, one that is similar to ours, but has a different
succession of events.
9. ⢠If you killed him so you only killed him in that universe, which is no longer the universe in which you
exist in.
⢠And if you try to go back to your own time, you may end up with another possible parallel universe and
never be able to get back to the universe you started in.
⢠The idea here is that every action causes the creation of a new universe and there are infinite number
of universe that exist, i.e. , the theory of multiverse.
⢠Lets leave this neoteric topic and get Back to our topic
10. ⢠As we discussed earlier, the theory of relativity states that as the velocity of an object nears the speed
of light, time slows down. Scientists have discovered that even at the speeds of the space shuttle,
astronauts can travel a few nanoseconds into future. To understand this, picture two people, person A
and person B. person A stays on earth, while person B takes off in a spacecraft. At take off their watches
at their perfect sync. The closer person Bâs spacecraft travel to the speed of light the slower time will
pass for person b{relative to person A}. If person b for just a few hours at 50 % the speed of light and
returns to earth
11. POSSIBLE TIME TRAVEL THEORIES
ď The one way of time travel will likely be done by way of natural phenomenon that will transport us
instantly from one point in time to another. These space phenomenon, which we are not even sure exit,
include: black holes
⢠wormholes
ď cosmic strings
13. ⢠When stars that are more than four times the mass of our sun reach the end of their fuel, they collapse
under the pressure of their own weight. This implosion creates âblack holes.â which have gravitational
fields so strong that even light can not escape. Anything that comes in contact with a black holeâs event
horizon will be sucked in. the event horizon of the black hole is its boundary at which nothing can
escape. you can think of the black hole as similar to an ice cream cone.
⢠It is large on top and tapers into a point, called a singularity. At the singularity the laws of
physics(including newton's law) cease to exist and all matter is crushed beyond recognition. This type of
non-rotating black hole is called a Schwarzschild black hole, named after the German astronomer Karl
Schwarzschild
14. ⢠Another type of black hole, called Kerr hole, is also theoretically possible. Kerr holes are rotating black
holes that could be used as portals for time travel or travel to parallel universes.
⢠In 1963, mathematician Roy Kerr proposed the first realistic theory for a rotating black holes.in his
theory , dying stars would collapse into a rotating rings of neutrons that would produce sufficient
centrifugal force to prevent the formation of a singularity, Kerr believed that it would be safe to enter
the black hole without being crushed by the infinite gravitational force at its centre. If Kerr holes do
exist, it might be possible to pass through them and exit out of a white hole. A white hole would have
the reverse action of a black hole. So instead of pulling everything into its gravitational force, it would
use some sort of exotic of matter with negative energy to push everything out and away from it. These
white holes would be our way to enter other worlds. Given the little we know about black holes, Kerr
holes may possibly exist. However, some physicist think that it is against physicsâ law.
15. Thorne believes there could be another type of tunnel-like structure existing in the universe that could be
used for a time travel portal. Wormholes , also called Einstein-Rosen bridges, are considered to have the
most potential for time travel If they do exist not only they could allow us to travel through time ,they
could also allow us to travel many light years from earth in only a fraction of the amount of time that it
would take us with conventional space travel methods. Worms holes are considered possible based on
Einsteinâs theory of relativity ,which states that any mass curves space time.
17. ⢠According to Einstein , gravity is not a force but a result of the curvature of space time caused by the
uneven distribution of the mass.
⢠Einstein depicted space as two dimensional plane rather than the four dimensions that actually make
up the space time.
⢠This 2-d fabric of space-time eventually forms a tunnel that forms a wormhole that looks somewhat like
following figure
18. ⢠So a wormhole act like a shortcut opened through space or something. It is like two holes tied together
by a tunnel.
⢠Thi tunnel suffers from super gravity and collasp as soon as it opens.so to travel through it we need
something to negate the effect of gravity. And the required substance is so called exotic matter-a
substance with negative mass which repels gravity. The wormhole tunnel is squished and squashed like
the fist of mine. In order to pass through it you need something inside of my hand to oppose the
âgrasping forceâ so that I can not squish anymore. And that is the use of exotic matter in time travel.
⢠So if you stabilize a wormhole with exotic matter injection, teleportation becomes possible.
⢠According to the theory of relativity,time slows down for objects moving at the speed of light
⢠So with the help of the time machine discussed before and with the exotic matter you can travel
through wormholes and by travelling in them you can jump forward and back ward in time.
19. ⢠There is another theory that was given by the physicist J. Richard Gott in 1991
⢠string like objects were formed in the early universe . These string may line the entire length of the universe
and are under immense pressure â millions upon millions of tonnes, which are thinner than an atom, would
generate an enormous amount of gravitational pull on any object that pass near them
⢠Objects attached to a cosmic string could travel at incredible speeds , and because their gravitational force
distorts space time ,they could be used for time travel
⢠By pulling two cosmic string close together , or one string close to a BLACK HOLE it might be possible to warp
space time to create space time fabric to create time like curve
⢠a spacecraft could be turned into a time machine by using the gravity produced by the two cosmic strings to
propel into the past. To do this it would loop around the cosmic string. However there is still much speculation
as to whether these string exist, and they do, in what form. Gott himself said in order to travel back in time
even one year, it would take a loop of string that contained half the mass energy of the entire galaxy. And, as
with any time machine you could no go back farther than the point at which the time machine was created