Friday, January 13, 2012

Misconceptions in Electricity


When electrical engineer William Beaty was working on the design of an electricity exhibit for the Boston Museum of Science, he decided to check out some elementary school science textbooks in search of good ways to communicate fundamental concepts on the subject.

Bad idea.

What he found was a morass of misconceptions, mistakes and misinformation in one text after another. Not one of the books, he found, even contained what he considered to be a valid definition of what electricity is, much less how it works. And he discovered something else: Even his own understanding of the subject, despite his years in the profession, was flawed; he was still the victim of deeply-help misconceptions that he had learned in grade school.

''The majority of my misconceptions had been specifically taught to me,'' he said. ''[They] were in my science textbooks long ago, and they were still in most modern textbooks.''

For a detailed look at misconceptions in physics and especially electricity, check out William's website here.

Found by Noel Cunningham

Thursday, January 12, 2012

Teaching Waves with Google Earth



Google Earth is a huge source of interesting illustrations of various natural phenomena. It can represent a valuable tool for science education, not only for teaching geography and geology, but also physics. This paper suggests ways that Google Earth can be used for introducing the physics of waves.

Click here to download the pdf.

Found by Noel Cunningham

Online Leaving Cert Physics Experiments

This site has a great selection of java simulations for revising many of the experiments on the Leaving Cert physics course.

http://www.mathsphysics.com/Physics/applets.html

Found by Noel Cunningham