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With a stop watch or a clock. If you're asking how do we determine what a second is (In the SI- International system of units), then that is determined by the oscillation of a Cesium Atom's Microwave. No matter what the conditions, the cesium atom's full oscillation will always equal one second. No matter where in the world. Really neat phenomenon.
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How do you measure 1 second?
your heart beats one time a second
What is 780nanometers in meters per second?
A nanometre is a measure of distance, metres per second is a measure of speed. The two measure different things and one cannot be converted to the other.
How do you measure the length of a bent object?
Measure one part, then measure the second part. Add the two measurements together and you have the answer
How many second in a light year?
A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles. A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles.
Are similar. The first square has sides that measure 4 inches and the second square has sides that measure 12 inches. The scale factor used to get from the first square to the second one is?
3 to 1
