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What happens when you take some basic, introductory physics and apply them to cool things you see? Dot Physics happens. This blog looks at movies, experiments, demos and other topics typically aimed at the introductory physics level.
Rhett Allain is an Associate Professor of Physics at Southeastern Louisiana University. He
enjoys teaching and talking about physics. Sometimes he takes things apart and can't
put them back together.
November 30, 2009
Category: physics
I am moving to ScienceBlogs.com. So, as I have said before, basically it will be the same stuff, new server. As of right now, only my new stuff is at http://ScienceBlogs.com/dotphysics, but soon all my old stuff will be there...
Posted by Rhett Allain at 5:20 PM • 4 Comments • 0 TrackBacks
November 29, 2009
Category: Analysis
The more I think about the last MythBusters' exploding water heater, the more cool things I see. How about I look at the energy of the explosion.
Posted by Rhett Allain at 11:27 PM • 15 Comments • 0 TrackBacks
November 27, 2009
Category: Analysis
One of the categories for Punkin Chunkin is the centrifugal machine. These are machines that spin pumpkins around really fast in circles to shoot them. They are basically like a giant-sized stone and sling.
Posted by Rhett Allain at 12:11 AM • 5 Comments • 0 TrackBacks
November 25, 2009
Category: random
I feel like a just came to a new school, or a new place. Well, I have migrated servers before, so this shouldn't be too bad. It really is nice to be here at ScienceBlogs. If you are unfamiliar...
Posted by Rhett Allain at 11:42 PM • 9 Comments • 0 TrackBacks
November 23, 2009
Category: physics
Actually, I applaud Adam for his creative use of the vernier caliper. Really, it is an example of "making things work". However, in this case there is a very nice alternative
Posted by Rhett Allain at 5:43 PM • 7 Comments • 1 TrackBacks
November 20, 2009
Category: physics
How fast would you have to shoot it to go 1 mile? The answer seems to be around 1000 mph and they are currently shooting them around 600 mph.
Posted by Rhett Allain at 1:32 PM • 4 Comments • 1 TrackBacks
November 19, 2009
Category: physics
Last night I saw the newest episode of MythBusters. One of the myths they revisited was the exploding water heater. Well, it turns out that I had an analysis of this first explosion, but I didn't move it over when I switched software. So, here it is.
Posted by Rhett Allain at 10:19 PM • 0 Comments • 0 TrackBacks
November 13, 2009
Category: physics
Instead of dropping charged oil in an electric field, they drop containers with metal nuts in water. The goal is to find the mass of a nut.
Posted by Rhett Allain at 12:03 PM • 4 Comments • 0 TrackBacks
November 10, 2009
Category: science
Maybe this isn't that mysterious. However, quite some time ago my daughter found this rock in the backyard. First, you must understand that this is an odd occurrence. In this part of Louisiana, there really aren't any rocks, just dirt....
Posted by Rhett Allain at 3:39 PM • 6 Comments • 0 TrackBacks
Category: physics
By repeatedly analyzing this video, I have an idea of the uncertainty due to the human input. Actually, I did this analysis 5 times before I realized a mistake I was making.
Posted by Rhett Allain at 3:12 PM • 0 Comments • 0 TrackBacks
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