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If I've used Wolfram Alpha correctly, a 7nm span of silicon circles the earth 5.4874958×10^-16 times at the equator.

I may be reading this wrong, wouldn’t a 7nm span of anything span the Earth 5.4874958x10^-16 times then?

Or is this somehow different than a pound of feathers vs a pound of gold question?

Edit: definitely glossed over the dead comment there this is in response to

Sorry but I only calculate in football fields.

I don't know, I find it more relatable if put in terms of how high a stack of CDs would be or how many times we can write the Library of Congress on it.

About the length your hair grows in one second

I am sure you meant one microsecond.