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Distance of lightning
Since the speed of light is high and the speed of sound is much lower, the distance to a flash may be estimated from the time between lightning and thunder. This calculation considers the speed of sound only, the time needed by the light is neglected.
Type the time between lightning and thunder in seconds into the corresponding field.
After a mouseclick on any free space of the window or on the "calculate"
button you may read the result.
Move the mouse over a unit or click on it to read its full name.
Example: During a thunderstorm you hear the thunder 5 seconds after the lightning. Type "5" into the field for the time between lightning and thunder. After a mouseclick on any free space of the window or on the "calculate" button you can read that the distance to the lightning was about 1.7 km.
© Bernd Krüger, 07.09.2008, 06.08.2018
Bernd Krüger, 2020