Date: 7/02/2015 09:00:51
From: ChrispenEvan
ID: 673162
Subject: So you think light is fast eh?

http://vimeo.com/117815404

45min video of a photon leaving the Sun and travelling across part of our solar system.

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Date: 7/02/2015 09:28:46
From: monkey skipper
ID: 673170
Subject: re: So you think light is fast eh?

What properties of photons enable them to retain the title of fastest objects/particles and/or waves comparatively to other stuff in the universe? What do legitimate theorists speculate could be faster than the speed of light (SOL)?

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Date: 7/02/2015 09:50:03
From: ChrispenEvan
ID: 673179
Subject: re: So you think light is fast eh?

they have no mass. any particle without mass travels at the speed of light. gravitons and gluons are the others i think. a theoretical particle called a tachyon travels faster than light and would need an infinite amount of energy to slow it to light speed the opposite of a particle with mass needing an infinite amount of energy to accelerate it to light speed.

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Date: 7/02/2015 23:37:05
From: mollwollfumble
ID: 673387
Subject: re: So you think light is fast eh?

> What do legitimate theorists speculate could be faster than the speed of light?

Light could travel faster than the speed of light when it is quantum tunnelling.

Tachyons appear quite frequently in mathematical models of subatomic physics beyond the standard model, for example in string theory. In 1969, a paper was written that showed that, although tachyons have negative squared mass and thus by the theory of special relativity can move faster than light, tachyon fields can “condense” into a form that travels slower than light.

Perhaps the most famous example of a tachyon is the Higgs boson of the Standard model of particle physics. In its uncondensed phase, the Higgs field has a negative mass squared, and is therefore a tachyon.

The phenomenon of spontaneous symmetry breaking, which is closely related to tachyon condensation, plays a central part in many aspects of theoretical physics, including the Ginzburg–Landau and BCS theories of superconductivity.

Other examples of tachyons include the inflaton field in certain models of cosmic inflation, and the tachyon of bosonic string theory.

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Date: 7/02/2015 23:54:08
From: ChrispenEvan
ID: 673393
Subject: re: So you think light is fast eh?

http://en.wikipedia.org/wiki/Tachyon#Fields_with_imaginary_mass

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Date: 9/02/2015 13:18:47
From: Cymek
ID: 673919
Subject: re: So you think light is fast eh?

Could light travel faster through an artificially created structure/substance than it does through a vacuum, would physics allow this ?

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Date: 9/02/2015 13:23:06
From: sibeen
ID: 673921
Subject: re: So you think light is fast eh?

Cymek said:


Could light travel faster through an artificially created structure/substance than it does through a vacuum, would physics allow this ?

Nup.

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