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October 22nd, 2016, 07:35 AM   #1
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Units and Dimensions

Approximately how many raindrops fall on a 1-acre plot during a 1-in rainfall?
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October 22nd, 2016, 10:09 AM   #2
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(1 acre of area in square inches)(1 inch) = volume of rain in cubic inches

(volume of rain in cubic inches)/(average volume of a single raindrop in cubic inches) = number of raindrops

Looks like you need to research square inches in an acre & average volume of a raindrop ...
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October 25th, 2016, 09:11 PM   #3
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I am not an expert. I hope this will help you. If there is any correction then please inform me, but according to my logic this is the answer of your really amazing question.

There are 90,921 drops of water in one gallon, so multiplying all together.

Roughly 1,580,088,782,700 drops of water will fall. Or about 1 1/2 trillion drops.
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October 26th, 2016, 07:12 AM   #4
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Originally Posted by AshBox View Post
There are 90,921 drops of water in one gallon...
I would have first asked what the size of a drop is, but how on Earth did you get that number?

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October 26th, 2016, 08:34 AM   #5
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On the basis that raindrops observably come in differing sizes, I absolutely guarantee that the number is not correct - although it may be approximately correct. I would stick to 91,000 or 90,000 as an approximation in that case.
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November 13th, 2016, 09:43 PM   #6
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A Google search suggests that there are about 90921 drops of oil in a gallon of oil, which would make the figure far too high for drops of water.
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