The document discusses tachyons, wormholes, and black holes. It defines tachyons as hypothetical particles that travel faster than light, and notes that they would violate causality. Wormholes are described as hypothetical topological features that could connect different points in space-time or even different universes. Black holes are regions with extremely strong gravity from which even light cannot escape. The document suggests that wormholes could allow tachyons to travel faster than light by providing connections between different points.

1. A
Seminar Presentation
on
Study of Tachyons and
Warmholes
Submitted By
Nitish Kumar Singh
1512240911
ME-88

2. What is Tachyons???
A tachyon or tachyonic particle is a hypothetical particle
that always moves faster than light.
Most physicists believe that faster-than-light particles
cannot exist because they are not consistent with the
known laws of physics.
Tachys, meaning "swift/quick/fast/rapid” coined
by Gerald Feinberg
Theoretical propositions of Tachyons by George
Sudarshan in 1962.

3. The possibility of particles moving faster than light was first
proposed by O. M. P. Bilaniuk, V. K. Deshpande, and E. C.
G. Sudarshan in 1962, although the term they used for it was
"meta-particle".
In the 1967 paper that coined the term, Gerald Feinberg
proposed that tachyonic particles could be quanta of a
quantum field with imaginary mass.

4. Cherenkov Radiation
A tachyon with an electric charge would lose energy as
Cherenkov radiation—just as ordinary charged particles do
when they exceed the local speed of light in a medium (other
than a hard vacuum). A charged tachyon traveling in a vacuum,
therefore, undergoes a constant proper time acceleration and, by
necessity, its worldline forms a hyperbola in space-time.

5. Causality
Causality is a fundamental principle of physics. If tachyons can
transmit information faster than light, then according to
relativity they violate causality, leading to logical paradoxes of
the "kill your own grandfather" type.

6. Blackhole
A black hole is a place in space where gravity pulls so much that
even light can not get out. The gravity is so strong because matter
has been squeezed into a tiny space.
Because no light can get out, people can't see black holes. They
are invisible. Space telescopes with special tools can help find
black holes. The special tools can see how stars that are very
close to black holes act differently than other stars.

7. Whitehole
A white hole is a hypothetical region of space time which
cannot be entered from the outside, although matter and light
can escape from it. In this sense, it is the reverse of a black
hole, which can only be entered from the outside and from
which matter and light cannot escape.

8. Wormhole
In physics, a wormhole is a hypothetical topological feature of
space-time that is essentially a "shortcut" through space and
time.
 A wormhole has at least two mouths which are connected to a
single throat. If the wormhole is traversable, matter can 'travel'
from one mouth to the other by passing through the throat.
Traversable wormholes would allow travel in both directions
from one part of the universe to another part of that same
universe (called intra-universe) very quickly or would allow
travel from one universe to another (called inter-universe) .

10. According to study blackhole and whitehole works as the entry and
exit gate respectively. Since wormhole is a time-travel gate which
open the inter-universe gate which proves the theory of multiverse
which state that in this world there are parallel universe also exist.
So when we emits a tachyon which travel faster than light its cause
to create a wormhole and hence with these we have necessity of both
wormhole and tachyon and for travelling faster than light wormhole
is necessary for the tachyon.

11. A tale about mysterious man from Taured
The Man from Taured (sometimes referred to as the Taured Mystery or the
Man without a Country ) is a story about a man who arrives at a Japanese
airport from a country called Taured. Many people have claimed this story
to be true, so the crux of the problem pertains to Taured. One would notice
that there is no country by the name of Taured, either today or during the
purported period of time when the incident took place, i.e. the 1950s. The
story ends with the man disappearing (forever) a day after arriving in
Japan. Moreover, all of his personal documents, such as his passport and
driver’s license also (conveniently) disappeared, thus making this strange
story unsolvable.