Interesting Interferometry | Erin McGee | TEDxStevens Institute of Technology

When I was younger, I was a competitive archer. My dad was a builder and an engineer, and he helped coach me. And one of the things he always did in a very efficient engineering way was measure out the distance to the target by taking big steps. So, one big step for about a meter, and we would measure how many meters away the target was.So, 10 steps for 10 meters, 30 for 30, and so on and so forth. This was a really easy way to be able to measure distances. So, we weren't sitting in the backyard all day mea ...