Measure Me This

Ever wonder how big the Earth is?
People have been asking that question for as long as humans have been around. The cool thing is that we figured it out before we ever knew of light bulbs or computers. We figured it out before we had been to the north pole. Americans didn't even know Hawaii existed and we knew how much mass was in the Earth. So how did they do it?... Hmmmmm. Gravity is an interesting thing.

Measurement is so important to us. Imagine not knowing what time it was or how much money you had or never getting a pair of shoes that fit. Please always be sure to measure accurately.