An excellent explanation of how microwaves work. It talks about waves (how to determine the frequency and wavelength of microwaves), electricity (magnetrons), heat and temperature.
Category: video
Resonance Frequencies: MythBusters investigate Tesla’s Earthquake Machine
The whole episode is worth watching, but this little section (at 10:52) of MythBusters’ attempt to build an earthquake machine there demonstrate the resonance frequency in a water tank provides a nice visualization.
Slow Motion Popcorn
The Slow Mo Guys do popcorn:
Vi Hart’s Math Doodles
Vi Hart has some excellent videos where she gives you things to doodle during math class (see her YouTube channel). There’s lots of wonderful geometry and algebra. The Fibonacci sequence video below is a great example:
Music of the Fibonacci Sequence
Tool‘s Lateralus has the Fibonacci Sequence embedded into it. Ms. Wilson tells me that some of her Algebra II students were able to detect it out after listening to the song (a few times), but this video has the highlights where the sequence occurs.
↬ Ms. Wilson
Phagwah (Holi) in Slow Motion
The Art of Watercolor
Silvia Pelissero (aka Agnes-Cecile) brings a face to life in watercolor. (She has more, excellent videos on her YouTube channel).
Daniel Pink on Motivation
Take home message: As soon as someone’s paid enough that money is no longer an issue, paying them more (or giving bonuses) can even have a negative effect on their performance on anything that requires higher level thought.
Which suggests that if we take grades out of the equation kids will learn more?
Audio from Daniel Pink’s TED talk on motivation.
↬ Mrs. D.