Why do you see lightning first and then hear thunder?

This is because light travels much faster than sound.

The speed of light in a vacuum is an important physical constant, internationally recognized as c 299792458 meter seconds.

In the air is not much slower. The speed of sound at room temperature is 340 meters per second. The speed gap is so big, I guess you also understand, usually far away from the thunder, people will feel fast and slow...

Because the eyes are longer than the front of the ears

Harry, Lord Lou, is testing your humor, because the eyes are in front and the ears are behind, and of course you see lightning first and then hear thunder.

Because the speed of light is faster than the speed of sound.

Light travels faster in the air than sound! So first I saw the lightning, then I heard the thunder.

Because the speed of light is several times faster than the speed of sound!

That's because you're looking out the window.

Lightning is as fast as light, much faster than sound, 30 watts of light, 340 meters of sound

In fact, it is the sound that comes before the flash (we call it thunder)!As for the detailed information, give it to other masters or you go to the Internet to find it!

It's not that I don't want to tell you, it's that I forgot, there used to be a science station on TV about it! And it has also been confirmed that there are "ghosts" in this world, but scientists call them "brain waves"!

Because the speed of light is faster than the speed of sound.

Because light travels faster than sound.

The reason why lightning is seen first and then thunder is heard is that light travels faster.

The reason why lightning is seen first and then thunder is heard because in the air, light travels fast and reaches the ground quickly, while sound travels slowly in the air and only reaches the earth after a while.

So you will hear the lightning first and then hear the thunder, in fact, the lightning and the thunder appear at the same time. The reason for such a difference in the time it takes to reach the ground is that light travels 3,000,000 kilometers per second, while sound travels only one kilometer in the air. The speed of sound is only one-900,000th the speed of light.

Some lightning bolts are long, some are short, some are loud, and some are quiet. You can roughly judge the height of the ground in the clouds based on the time it takes for the sound to reach the ground. It doesn't take much time for the light to reach the ground, it can be considered 0, from seeing lightning to hearing thunder, how many seconds is the interval and multiplied by 340 meters, which is the distance from lightning to you.

The right thing to do when thunder rains and there is lightning

1. Don't venture out unless absolutely necessary. Stay indoors.

2. Do not approach open doors, windows, stoves, radiators, metal pipes, gutters, and electrical appliances plugged in.

3. Do not use plug-in electrical devices such as hair dryers, voltage brushes or electric shavers during storms.

4. During the storm, do not use ** when you are late, lightning may hit the outside Nadan trace ** line.

5. Don't go to the clothes on the clothesline.

6. Do not engage in the installation of fences, power lines, pipelines or construction steel.

7. Do not use metal objects such as fishing rods and golf clubs. Golfers who wear shoes with nails made excellent lightning rods.

8. Do not dispose of flammable materials in open containers.

The above content refers to Encyclopedia - The Propagation of Light.

In fact, in thunderclouds, lightning and thunder occur at the same time, and the reason why people always see lightning first and hear thunder later is because light travels much faster than sound.

According to the propagation velocity, the propagation velocity of sound in the air is 340m s; The propagation speed of light waves in the air is 3*10 8m s (3*10 to the 8th power), so it can be seen that the propagation speed of light waves in the air is much greater than that of sound, so the first thing to see is lightning, and then to hear thunder.

The reason why you hear thunder after watching lightning first is because in the air, light travels fast and reaches the ground very quickly, and the sound is there.

The speed of propagation in the air is slow, and it takes a while to reach the earth.

So you will see lightning first and then hear thunder. In fact, lightning and thunder appear at the same time.

The reason for so much difference in the time it takes to reach the ground is because the light travels every second.

3,000,000 kilometers, while sound in the air can only travel kilometers per second. The vocal cords have only light.

1 in 900,000 speed.

Some lightning bolts are long, some are short, some are loud, some are small. You can root.

The height of the clouds to the ground is roughly judged by the time it takes for the sound to reach the ground.

It barely takes much time for the light to reach the ground, and it can be considered zero, from the time you see lightning to the time you hear thunder.

How many seconds are multiplied by 340

Meters are the distance from lightning to you.

Thunder is reflected when it encounters clouds or tall buildings, so it usually takes a while for a lightning bolt to disappear.