A Concept of Infinty

One of the most difficult questions a curious student may ask a math teacher is whether 1/0 = ∞ or not. And then of course comes another thoughtful extension: Is 1/∞ = 0? Why this is a difficult question? It is difficult because it is usually asked by those who feel that infinity is a natural concept, like a number […]

Leap Second, how cool is that?

What is a Leap Second? “Earth’s rotation is gradually slowing down a bit, so leap seconds are a way to account for that,” said Daniel MacMillan of NASA’s Goddard Space Flight Center in Greenbelt, Md. There are actually two components used to determine Coordinated Universal Time (UTC): International Atomic Time (TAI): A time scale that […]