Dot Physics

Archives for August, 2010

What is this #2: Answer

Reader Fruity was the first to correctly name this device – on just the 9th comment. Impressive. Honestly, when I found this thing I had no clue. I asked other physicists and none of us were sure. However, I did find the answer. Let me show you my secret. I don’t know how old this…

Ghostbusters and tenure in Louisiana

Ghostbusters is old enough that I don’t mind giving away some spoilers. If you haven’t seen it, I doubt you are going to. In the movie, the Ghostbusters capture some ghosts. They keep these ghosts in some “containment grid” device. Someone from the city doesn’t like this and comes to turn it off. After much…

And just suppose you had no grade

It would be nice if I could come up with a good rhyme for grade to fit this title. One of my brothers is a biochemistry faculty at Appalachian State University (hint – he is the one with the same last name that I have). We were talking (and surprisingly agreeing) that grades were dumb.…

What is this? Number 2

Here is my plan. Post a “what is this” on every Friday until I run out of things. I will post the answer on Tuesday. Maybe we should start keeping points. You get more points for being the first one to get it right. You lose points for getting it wrong. Last week was easy,…

What if everyone jumped?

Might as well jump. Jump. Go ahead, jump. – Van Halen Suppose everyone in the world got together and jumped. Would the Earth move? Yes. Would it be noticeable? Time for a calculation. Note: I am almost certain that I have done this before, but I can’t find where. Starting assumptions. 7 billion people. Average…

How tall is that UFO?

You know I wander around the intertubes, right? Who doesn’t? Anyway, I saw this collection of strange google Earth images. Yeah, it is kind of dumb, but this one made me think: That article said the image was from TechEBlog, so there is that. I have no idea what this thing is, but it is…

Change of plans

Austria seems like a nice place to visit – I have never been there. However, I am not going to Salzburg (even though I said I was). The original plan was for WOMWorld/Noika to fly me to visit Felix and the Red Bull Stratos team. It was an exciting plan. Now there is a new…

Variation in throwing a ball

I might as well make a new tag called “basketball throws” because I can’t stop with the analysis of these crazy basketball shots. Watch – in the end someone is going to post a video about how all these were faked (and I have said there is no clear evidence they are fake). Oh, if…

What is this #1: Answer

Perhaps you have had enough time to think about the first “What is this” demo item. Here is the item in question. It seems most of you were right on track with this one – probably because you can still buy such a device. This thingy launches a small ball horizontally while at the same…

New Game: What is this item?

Let’s play a game. I think this will be fun. So, a couple of years ago I had the duty of organizing the physics demo room (well, “demo” is maybe not the best term). This room is quite large and there is a whole bunch of stuff in here, some of the items are very…