The speed of sound and speed the light are different, which is why you’ll always see lightning before you hear the thunder. If the lightning is a mile or 2 away, that’s a good enough distance that the speed distinction becomes evident to your brain.

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A Light and also sound are really different. Sound is in reality a mechanically disturbance v air or one more medium. Sound constantly needs a tool to travel through, and also the kind of medium determines that is speed.

Imagine a bunch of molecule bouncing about in the air. If girlfriend hit an item or make a fast motion, the molecules that you press are going to hit the people in front of it. You’ll obtain this disturbance in the direction of take trip of however you made the initial motion, and it will move through the medium. That’s how sound travels, together a push wave.

Light, on the other hand, is no a pressure wave. It’s a an essential particle. One ray of light is typically called a photon, and it’s an electromagnetic disturbance. Irradiate doesn’t need a tool to travel.

The rate of sound with air is about 340 meters per second. It’s much faster through water, and also it’s also faster through steel. Light will travel through a vacuum in ~ 300 million meters per second. Therefore they’re completely different scales.

No information have the right to propagate much faster than the rate of light. If you have light that’s going through media, it have the right to travel slower 보다 that.

But the speed of sound and also speed of irradiate are completely incomparable. You typically don’t notification this speed difference on a day-to-day basis. This speed difference does become apparent, because that example, with lightning. You’ll constantly see lightning before you hear the thunder. If the lightning is a mile far or 2 miles away, that’s a an excellent enough street that girlfriend will notification the speed difference.

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Brandon pedestrian is a Ph.D. College student in clinical physics in ~ and also medical design research assistant at the Morgridge Institute because that Research.

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