An article in the April Harvard Business Review ($6 purchase price) by Amy Salzhauer reports on the use of femtosecond lasers in the fields of medicine and industry. These lasers produce pulses of light that last only a millionth of a billionth of a second.
"It takes light only about a second to travel from the Moon to Earth. ln a femtosecond . . . light travels about 300 nanometers, or a fraction of the width of a human hair."
Or, imagine a dog jumping in and out of a bucket once every three seconds for 500 million years.
THAT fast.
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