2006-09-21 05:32:47 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
No, space is a vacuum, so there's no medium out there but light still travels to us from stars.
2006-09-21 05:35:59 · answer #1 · answered by spongeworthy_us 6 · 1⤊ 0⤋
No. As it propagates, the energy contained in a photon (if you look at it as a wave instead of a particle) is constantly being 'traded off' between an electric field and a magnetic field (much like the energy in a pendulum is constantly being 'traded off' between potential and kinetic energy). That's why it's called an 'electromagnetic' wave.
Doug
2006-09-21 12:38:15 · answer #2 · answered by doug_donaghue 7 · 1⤊ 0⤋
DOES light need any medium for proagation?
No. Or, at least, not one that has been identified as yet.
2006-09-21 12:41:21 · answer #3 · answered by Dave_Stark 7 · 2⤊ 0⤋
No. even if there's no matter (vacuum) light can still travel. like the sunlight, the space between earth and sun is vacuum, but still, sunlight reaches earth.
*Light cannot pass through opaque objects.
2006-09-21 12:40:27 · answer #4 · answered by aenaea 2 · 1⤊ 0⤋
No , it propagates through nothing quite successfully.
2006-09-21 12:35:24 · answer #5 · answered by Anonymous · 1⤊ 0⤋