Presentism is a school of philosophy that holds that the future and the past exist only as changes that occurred or will occur to the present, and they have no real existence of their own. In this view, time travel is impossible because
there is no future or past to travel to
.
Why travel back in time is not possible?
The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity. Mathematically one can go backwards or forwards in the three spatial dimensions. But
time doesn’t share this multi-directional freedom
.
Does the past still exist?
In short, space-time would contain the entire history of reality, with each past, present or future event occupying a clearly determined place in it, from the very beginning and for ever.
The past would therefore still exist, just as the future already exists, but somewhere other than where we are now present.
Has a time machine been invented?
In fact,
a time machine has already been built
. Scientists, however, are still working on how to make it as efficient as possible, like in the Back to the Future movies.
What did Stephen Hawking say about time travel?
A more fundamental objection to time travel schemes based on rotating cylinders or cosmic strings has been put forward by Stephen Hawking, who proved a theorem showing that according to general relativity
it is impossible to build a time machine of a special type (a “time machine with the compactly generated Cauchy
…
Is time travel possible Stephen Hawking?
According to Stephen Hawking,
time travel is possible
, and not just in the way we might think. Backward time travel is not supported by Hawking’s theories, because new matter (a new you) would need to be created – one existing in the past and one in the present, traveling back in time.
Can you go to the future?
While
it’s not possible (yet) to travel to the future fast than the rate at which we’re doing it now
, it is possible to speed up the passage of time. But, it only happens in small increments of time. And, it has only happened (so far) to very few people who have traveled off Earth’s surface.
Can a wormhole exist?
Einstein’s theory of general relativity mathematically predicts the existence of wormholes, but
none have been discovered to date
. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.
Is it possible to travel back in time with your mind?
Do you believe in time travel? Every time we remember something from the past or imagine something that will happen in the future, we engage in mental time travel. Scientists discovered that,
whether we mentally travel back into the past or forward into the future, some of the same brain regions are activated
.
Can I go back in time to change the past?
You can’t come back again
. Neither can you visit the past, which from the science-fiction standpoint is where the real fascination lies. Nothing in Einstein’s theory of relativity, however, specifically forbids travel into the past, but physicists are divided over whether to take the possibility seriously.
Is it possible to stop time?
The simple answer is, “
Yes, it is possible to stop time
. All you need to do is travel at light speed.” The practice is, admittedly, a bit more difficult. Addressing this issue requires a more thorough exposition on Special Relativity, the first of Einstein’s two Relativity Theories.
What is a traversable wormhole?
An important characteristic of a wormhole is its traversability;
if a particle can enter through one side of the wormhole and it can exit through the other
, the wormhole is traversable.
What is the IQ level of Stephen Hawking?
| Name (First/Last) Description IQ (SB) | Shakira Singer 140 | Sharon Stone Actress 154 | Sofia Kovalevskaya Mathematician & writer 170 | Stephen W. Hawking Physicist 160 |
|---|
Is it possible to go faster than light?
Albert Einstein’s special theory of relativity famously dictates that
no known object can travel faster than the speed of light in vacuum
, which is 299,792 km/s. This speed limit makes it unlikely that humans will ever be able to send spacecraft to explore beyond our local area of the Milky Way.
How is time an illusion?
According to theoretical physicist Carlo Rovelli, time is an illusion:
our naive perception of its flow doesn’t correspond to physical reality
. Indeed, as Rovelli argues in The Order of Time, much more is illusory, including Isaac Newton’s picture of a universally ticking clock.
Can you build a time machine?
However, in order to make it work, the concept would require vast amounts of power and a way of shrinking everything to a microscopic scale. But
once we have a time machine, using it successfully will require a detailed understanding of time itself
.
Does the future exist?
The past and future do not exist
and are only concepts used to describe the real, isolated, and changing present. This conventional model presents a number of difficult philosophical problems, and seems difficult to reconcile with currently accepted scientific theories such as the theory of relativity.
What happens if you enter a white hole?
White holes are theoretical cosmic regions that function in the opposite way to black holes. Just as nothing can escape a black hole,
nothing can enter a white hole
. White holes were long thought to be a figment of general relativity born from the same equations as their collapsed star brethren, black holes.
How many dimensions are there?
The world as we know it has
three dimensions of space
—length, width and depth—and one dimension of time.
What is white black hole?
Schwarzschild wormhole
A white hole is
a black hole running backwards in time
. Just as black holes swallow things irretrievably, so also do white holes spit them out. White holes cannot exist, since they violate the second law of thermodynamics.
