Its interesting this comparison of the speed of
'sound' as similar to the speed of 'light'.
What is sound? 440cps, 1000cps? There is no generic
term. It makes no sense to say 'speed of sound'
because sound is the propagation of a wave (which is
variable) through air. And the air can only move so
fast and change so fast so the medium determines the
'speed' of the acoustic frequency(ies).
If you inject sound in mass, it moves FASTER because
the mass is more compacated and less spread out,
therefore the 'speed of sound' is dependent on the
media through which it moves.
This is the index of refraction;
http://www.rwc.uc.edu/koehler/biophys/9e.html
for sound,
n = 1 in air;
n = .06 in glass;
n = .23 in water;
n= 6.1 in rubber;
for light (of wavelength 589.3 nm),
n = 1 in a vacuum;
n = 1.0003 in air;
n = 1.333 in water;
n = 1.336 in vitreous humour (inside the eye);
n = 1.413 in the eye's lens;
n = 1.52 in crown glass;
n = 1.61 in flint glass, and
n = 2.42 in diamond.
Air and the speed of sound;
http://www.treasure-troves.com/physics/Air.html
The same applies to light. What is 'light'? It is
red, just as surely as it is also blue, green,
etc..and the composite of those colors is 'white',
though it can also produce 'black'...
So aren't red, green and blue 'light' all at different
frequencies? And because of being different
frequencies, they will move at different velocities.
Index of refraction samples for light;
http://www.physics.ohio-state.edu/~lvw/lvw_page/99jan05_lec01/sld002.htm
excellent demo;
http://wigner.byu.edu/LightRefract/LightRefract.html
So what is 'light'? Is it like Tesla said highly
charged particles that stream off excited matter and
it appears when it strikes another mass? Is it the
propagation of an EM wave through transparent or
translucent media?
Is that EM wave producing light as it passes? Or does
it produce light ONLY WHEN IT STRIKES SOMETHING?
Light is emitted from collapsing electron shells in
excited mass. Is that not true?
Does that mean Tesla was correct? If not, what then is
light?
The references to a 'constant' seem to rely on light
moving in a vacuum, without being subject to
temperature, humidity, electric or magnetic fields
that could distort it. What about gravity? What
about ZPE which appears to come in waves if Win
Lambertsen and others are correct in their
assessments?
To my view 'fixed' speeds even in ideal situations are
a crude reference based on normal situations to
determine a working value, but not absolutely a fact.
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