Today I just want to mention some quick fun mathematical things about the human body that are useful for measuring stuff without a tape measure.
– the length of your outstretched arms fingertip to fingertip is close to equal to your height
– a cubit (the unit of length Noah’s ark was measured in) is the length your elbow to your fingertip, well, in that case, I guess it was Noah’s arm
– a span is the outstretched distance from your thumb to your pinky, mine is 9 inches
– Need to measure something small quickly? The top segment of your thumb is about an inch, the width of your pinky finger is about a centimeter, and the width of your palm is about 4 inches
Isn’t that fun to know?