by Milan Sanader | May 3, 2021 | Gr 4-6 Science & Tech, Gr 7-8 Science & Tech, Gr. 11-12 Physics
We’ve long thought that electric eels hunt individually…until we discovered a lake where one species hunt, and zap, in packs! Hosted by: Hank Green SciShow has a spinoff podcast! It’s called SciShow Tangents. Check it out at http://www.scishowtangents.org This...
by msander | Mar 4, 2021 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
Introduction Hans Christian Oersted (1777–1851), a Danish physicist, was performing an experiment in 1820 when he noticed that whenever an electric current from a battery was switched on or off, a nearby compass needle was deflected. Through additional experiments,...
by msander | Apr 19, 2019 | Gr 9-10 Science, Gr. 11-12 Physics
There’s a saying that “it’s not the volts that kills you, it’s the amps” and while that’s true in a way, you can’t have amps without volts and skin resistance plays a big part too. This video explores all this, introducing...
by msander | Feb 18, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Physics
Introduction Measuring tiny volumes with precision and accuracy requires a micropipet. In the biology lab, micropipets are used for preparing and loading DNA samples, microscale experiments and the preparation of many types of samples. These applications rely on good...
by msander | Jan 6, 2019 | Gr 4-6 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
When charge moves, we call it electric current, but the word current is usually reserved for things like water flows. Does electric current really work like that? Electrons are quantum particles, so we have to be careful....
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