Dot Physics
Archives for April, 2009
Video Analysis tutorial with Tracker Video
Posted by Rhett Allain on April 13, 2009 Previously, I showed how to analyze a cat video with Logger Pro. Logger Pro is nice, but so is Tracker Video. I also posted a comparison between Tracker and Logger Pro. Now, here is the same tutorial on the same video using Tracker Video. Record your screencast online I am not going to go through…
Thermal expansion of water in a pool
Posted by Rhett Allain on April 12, 2009 I already talked about increasing the temperature of a pool. My father commented that he thought the pool level rose by like half an inch when the temperature increased (by about 10 degrees F). So, this leaves the question: Is my father crazy, or is this possible? Or are both true?
A power estimate for heating a pool.
Posted by Rhett Allain on April 11, 2009 It is spring break, so we are at my parents house for a couple of days. The kids like it because there is a pool, a heated pool even. It really isn’t that cold outside, but yesterday the water measured at 62 oF. So, with some help from the kids, we cleaned out the pool…
MythBusters: Crashing two moving cars, or one
Posted by Rhett Allain on April 10, 2009 I am so pumped up that MythBusters is back on. Not only do I like the show, but it offers so many blogging opportunities. Their latest show featured car crashing myths. One of the myths from the episode was a redo of the myth where two trucks crash head on simultaneously crushing a smaller car…
Minimal set up for blogging
Posted by Rhett Allain on April 9, 2009 This post has nothing to do with physics, so if you are only into physicsy stuff, skip this. The primary goal of this post is to list what I need to blog. The secondary goal is to rant about my laptop. I destroyed my laptop (well, not really, but kind of). Basically, I had a…
Video Analysis. Tracker Video vs. Logger Pro
Posted by Rhett Allain on April 7, 2009 I recently posted a tutorial on using Logger Pro for video analysis. Why did I use Logger Pro? Why not Tracker Video? Here is a quick comparison of the two. Logger Pro In the previous tutorial, I used Logger Pro. The primary reason was that the tutorial was for a lab course. The students were…
Teacher-Student-Class-Learning
Posted by Rhett Allain on April 7, 2009 Dan Meyer at dy/dan just posted about teacher-student analogies. His analogy is that the student is like a weight lifter and the teacher is the spotter. I like this. It is similar to my usual analogy that the teacher is like a trainer and the student doing some exercise. Another analogy I often use is…
Video Analysis Tutorial and a cat
Posted by Rhett Allain on April 6, 2009 Cats can be entertaining – especially when they are someone else’s cat and that someone made a video. Really, this post is about analyzing video with Logger Pro (in a tutorial type fashion). I just happens that I chose this cat video to analyze. Here is the video: I am going to look at the…
William Beaty has fun with dry ice
Posted by Rhett Allain on April 3, 2009 I found this video to be very entertaining. Dry Ice is LEEEEEEATHALLY DAAAANGEROUS? – These bloopers are hilarious William Beaty’s site has tons of great stuff – http://www.amasci.com/