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Quasi-weekly answerers to science questions, along with brief lessons and ideas for teachers and students.
Now you can find out where you are even if you don't have GPS. Learn how to find south along with your latitude and longitude using only a f...
Last week we covered the two postulates of special relativity, and next week we'll use geometry to derive some of its consequences, but firs...
The bizarre consequences of special relativity arise from two postulates, two things which once accepted lead to Einstein's space-time. In t...
The quadrant is a simple tool for measuring the altitude (angle) of an object above the horizon. This episode makes use of a printable templ...
Einstein may have believed God doesn't play dice, but God need not conform to Einstein's beliefs. This piece explores the phenomenon of quan...
In the movie Speed a bus is forced to jump an unfinished portion of highway to avoid setting off a bomb on the bus rigged to explode should...
What do bicycle wheels, figure skaters, and exploding stars have in common? That's right, angular momentum.
A fast-paced time-laps demo of how to build your own electric motor.
Electricity and magnetism are intimately connected. Explore their relationship in this short explanation of the hand rules.
In the inaugural episode of the Tabletop Explainer, examine the magnetic field. What is is and what is it good for?