Lightning is a bright flash of electricity produced by a thunderstorm. All thunderstorms produce lightning and are very dangerous. If you hear the sound of thunder, then you are in danger from lightning.
Upon viewing a flash of lightning in the sky, count the number of seconds until you hear thunder. The formula is to divide the number of seconds by the speed of sound in feet per second.
The delay between when you see lightning and when you hear thunder occurs because sound travels much, much slower than light. Sound travels through air at about to feet per second our default is That is a little more than one mile per five seconds.
This approximation will give you a good idea of how far away the lightning was. Enter the number of seconds from the flash of lightning until you hear the start of the thunder rumble. If you wish, you can adjust the speed of sound to your preferences; however, under most situations, our default should be used.
You should not deviate above or below feet per second. When you have made your entries, click on Calculate. The distance is returned in miles. Use extreme caution and care around lightning!Thunder and Lightning first appeared in New Teen Titans #32 and was created by Marv Wolfman and George Pérez.
Fictional character biography [ edit ] Gan and Tavis Williams are twin brothers that were born of an unnamed Vietnamese woman and an American soldier named Lt. Walter Williams. Thunder is the sound caused by kaja-net.coming on the distance from and nature of the lightning, it can range from a sharp, loud crack to a long, low rumble (brontide).
The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave, similar to a sonic.
National Lightning Safety Institute Providing expert training and consulting for lightning problems. But the lightning we usually care about most is the lightning that goes from clouds to ground—because that's us! As the storm moves over the ground, the strong negative charge in the cloud attracts positive charges in the ground.
Lightning is a leading cause of injury and death from weather-related hazards.
Although most lightning victims survive, people struck by lightning often report a variety of long-term, debilitating symptoms.
Thunder is the sound caused by lightning. Depending on the distance from and nature of the lightning, it can range from a sharp, loud crack to a long, low rumble (brontide). The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning.