Category: 2010
Well, it seems our initial return to blogging suffered a slight setback. But we’ve been pretty hard at work over the past year on our new look, new website and many other new developments. And we’re happy to be returning to blogging at long last as well. We’re pleased to have you visiting, and invite […]
This is the third followup of the blog article: “A perfect storm in a cup of salt water?”I woke up last night with a perfect explanation for the mysterious temperature gradient observed in a saturated salt solution. It is the recrystallization of salt …
This is the second followup of an earlier blog article “A perfect storm in a cup of salt water?”I did an experiment to investigate the relationship of the salt concentration with the mysterious temperature gradient in a cup of salt water. The experimen…
This is the first followup of the blog article last week “A perfect storm in a cup of salt water?”.Several people including Bob Tinker, John Loosmann, and Einar Berg suggested that it was the evaporation of water that drives the observed persisting tem…
Andy Zucker’s article, “Transforming Schools with Technology,” was featured in Independent School magazine. The special issue, focused on the theme of Teaching in a 2.0 World, won an award from the Association of Educational Publishers as the best single-theme issue of an education publication.
The new issue of @Concord includes articles on formative assessments in electronics, a new simulation for teaching and learning heat transfer, nanoscience and genetics education, and more.
I was bothered by an experiment I did recently about the temperature distribution in a cup of salt solution. I added a few spoons of table salt and baking soda in two cups of water to create two saturated solutions. Then I left them sit there for a few…
Infrared (IR) imaging is a technique for seeing heat based on detecting thermal radiation (mostly IR) an object emits. It used to be a very expensive tool only affordable to guys in military and secret services where money is not a problem.You can now …
At the Denver School of Science and Technology, a public charter high school serving many students from low-income families, laptops are used by teachers and students in a variety of ways. About 30% of the graduating class takes an AP Physics exam, compared to only 3% nationally.
I was recently involved in a few pilot field tests in which high school students were challenged to build an energy efficient scale model house. We observed something amazing. Initially, I was worried that students may end up building houses that are s…