LOL Notes Part 2

Since I had my note-passing notes taken away from me by the oh-so-pleasant Dr. Not-To-Be-Named (I feel like Harry Potter...or wait...Ron Weasley...more on how i AM ron weasley later) I had nothing to do but attempt to pretend to take notes that were about the lecture. These are the things that I 'learned'...and were actually told to me by the professor:

1. Sonar was invented in World War One AND Two...(the fact that we have to be told what sonar was is only slightly less ridiculous than the fact that the prof apparently thinks that there is not a twenty year difference between the two world wars)

2. Echolocation is used by bats because...(wait for it)...they are BLIND! Maybe this is where the phrase 'blind as a bat' comes from...

3. Diffraction-something that diffracts

4. Lightning is apparently responsible for its own noise...not thunder

5. All people in the 1940s were stupid according to the teacher. I guess we are smart tho, and that is why we are learning all this stuff.

6. Some tubes are open and some tubes are closed.

7. The Doppler Effect-all I got out of this was that it looks a LOT like when Magneto uses his powers...I'm pretty sure the example picture showed a train getting wrecked by what looked like Magneto's powers...

8. One shift, two shift, red shift, blue shift....not really sure what that means, but i wrote it down for some reason.