The speed of light through Jell-O.
Photons generated by a laser are exactly the same -- go at the same speed, etc. -- as photons of the same color from any other source.
There are two different paths a photon can take through Jell-O:
(1) Most colors of photons will go more or less straight through.
Since Jell-O is mostly water, those photons go at pretty close to the speed of light through water -- this is somewhat slower than the speed of light through a vacuum (often abbreviated as "the" speed of light, "c").
The refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.
In vacuum, light travels roughly 1 foot (0.3 meters) per nanosecond.
In water, light travels roughly 3/4 foot (0.2 meters) in the same nanosecond.
(2) Some colors of photons may take *much* longer.
Some flavors of Jell-O are fluorescent.
When you shine light on fluorescent Jell-O, the dye molecules absorb a few photons of *some* colors, and then a relatively long time later release photons (often of a different color).
After you turn off the lights, photons continue to trickle out for a relatively long time (a few microseconds are a long time for this sort of thing).
If you pulse the light on-off, the first batch of "fast" photons gets through very quickly, and then sometime later the "slow" photons trickle out.
Copper is opaque to light - light can not travel though it.
ans2. Light is an electromagnetic phenomena, and is unaffected by the motion of air.
Light goes incredibly fast through space, bouncing off objects.
Gravitational waves travel through space at the speed of light, which is about 186,282 miles per second.
Yes, they travel some fast!
670 616 629 mph
Sound waves require a medium to travel through, such as air, water, or solids, and they propagate by causing particles in the medium to vibrate. Light waves, on the other hand, can travel through a vacuum and do not require a medium. They propagate as electromagnetic waves and can travel through empty space.
the speed of light
it can travel from 380nm [nanometres] to 740nm
Darkness is the absence of light and will therefore travel at the speed of light (6x108m/s)
all electromagnetic waves travel at the same speed through space. This is the speed of light, or 300 000 000 m/s (3x108 m/s).
yes