The speed of light is 300,000 miles per second. The sound speed of about 1/3 miles per second.
, we can time when we see lightning or hear thunder, that a period of a few seconds.
then took a number of seconds, multiplied by 1/3 would be a kilometer distance, as if we timed between. Lightning and thunder 3 seconds
we will know that Lightning away from us for about 1/3 x 3 equals 1 mile.
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