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Transcript
Faster Than Light
Albert Einstein proposed his celebrated special theory of relativity in 1905.
Einstein's question
what happens if you outrace a light beam?
the speed of light was a constant, no matter how fast you moved.
you can never race alongside a light beam
nothing can break the light barrier
1
Two way to travel FTL
perhaps one way to travel faster than light is to invoke general relativity.
There are two ways in which this might be done
*Stretching space.
*Ripping space.
2
There are three devices and phenomenon for Stretching and Ripping space-time.
devices and phenomenon for Stretching and Ripping space-time.
THE ALCUBIERRE DRIVE AND NEGATIVE ENERGY
(1)
THE ALCUBIERRE DRIVE AND NEGATIVE ENERGY
The key to the Alcubierre drive is the energy necessary to propel the spacecraft forward at faster-than-light velocity
A straightforward calculation shows that you would need "negative mass" or "negative energy,", if they exist. Traditionally, physicists have dismissed negative energy and negative mass as science fiction.
we now see that they are indispensable for faster- than-light travel
BUT
PLANCK ENERGY AND PARTICLE ACCELERATORS
(2)
PLANCK ENERGY AND PARTICLE ACCELERATORS
One can calculate the energy necessary to create an instability in space and time: it is of the order of the Planck
Given that projection,
we are a long, long way from being able to achieve the Planck energy.
WORMHOLES AND BLACK HOLES
Besides stretching space, the second possible way to break the light barrier is by ripping space, via wormholes, passageways that connect two universes.
(3)
WORMHOLES AND BLACK HOLES
When you enter through the wormhole ring, you will not be able to go back through the loop because it is irreversible holes
The important catch
-WOODY ALLEN
It is impossible to travel faster than the speed of light, and certainly not desirable, as one's hat keeps blowing off.