I have lost count of the number of times I have heard people say that Ohm’s Law is [latex]V=IR[/latex]. I have seen it in lots of electrical training materials. This post is to explain that Ohm’s Law and [latex]V=IR[/latex] are not the same thing, and that the difference matters; thinking they are the same is […]
Category: Science education
Analogy in science – this blog post works just like a whistle
There’s a fantastic story about Isidor Rabi (I think), who won the Nobel Prize for his work on nuclear magnetic resonance (NMR). NMR is an indispensable technique in chemical analysis, and also the basis of MRI scanners in hospitals. This story shows that Rabi must have had the admirable trait of being secure enough in […]
Science is hard if you anthropomorphize your molecules
The inspiration for this post comes from a Calvin and Hobbes cartoon (if you are from a generation unfamiliar with these Bill Watterson cartoons, then go and discover them after reading this blog). Calvin sees his mum crying in the kitchen, and asks why. She explains that she is cutting up an onion, to which […]