Chapter 18

Chapter 18

Summary:

          Chapter 18 starts off talking about different bureaus, the NIST and the BIPM, which try making precise measurements for the rest of the world to follow. This always interests me because when we talk about distance, Unites Statesicans say miles, but everyone else says kilometers. We should unify the earth and have one system. The kilogram seems common when watching an Australian baking show, but when I make a cake I never see the word in the instructions. Time is measured through rocks with the amount of cesium which is apparently the most precise way to measure time in general. Kean goes on to talk about a fission reactor in Africa which is also the only reactor that exists. Research done with this reactor shows that the big bang theory is impossible. This led australian scientists to come up with the idea of black holes. Black holes always seem to amaze me due to the shear fact that we know nothing for absolute.