Smarter Every Day: Handheld TESLA COIL GUN at 28,000fps.
Tesla Coils are a lot of fun, but I don’t recommend doing this at home unless you know what you’re doing. Very cool to watch in this video, though.
Category Archives: School and Education
Fun with Physics
Physics Girl: Bizarre Spinning Toys. (YouTube, 5:23)
“Spinning toys and tops have unusual behaviors. The famous tippe top flips itself over and spins on its stem. The PhiTOP stands up on its end, which you can also do with a hard-boiled egg. These behaviors all have to do with torque and angular momentum, like a bicycle wheel precessing around a rope due to gyroscopic behavior.”
Dancing water droplets in an air bubble inside a water bubble in space
Smarter Every Day 160: The WALKING WATER Mystery (in SPACE and SLOW MOTION!). (YouTube, 12min)
Destin Sandlin explains why you often see water droplets dance or bounce on the surface of water instead of coalescence occurs.
This video features astronaut Don Pettit, who did a cool experiment in space: He attached a big water bubble to a speaker, then inserted an air bubble into it. When he played cello music (by Yo-Yo Ma) through the speaker, little water droplets would detach from the water and bounce around inside the air bubble. You can see it in the above video starting right here.
Ernstzunehmen
Kinderdoc: Wenn der Kopf brummt.
“Kopfweh kommen in allen Altersklassen vor, vermutlich auch schon bei Säuglingen. Jedenfalls werden klassische Symptome wie Sehstörungen, Sprachproblemen und eben dem typischen frontalen oder haubenartigen Schmerz des Kopfes bei anderthalb- oder zweijährigen beschrieben oder auffällig.”
Interessant für selbst Betroffene oder Menschen, die mit Kindern und Jugendlichen arbeiten.
From a catastrophe to a new theory
Physics Girl: The Ultraviolet Catastrophe.
“How did the field of quantum mechanics come about in the first place? The Rayleigh-Jeans catastrophe, also known as the ultraviolet catastrophe was a prediction by the Rayleigh-Jeans law that a blackbody would radiate infinite amounts of ultraviolet light. It wasn’t until Max Planck came along and predicted that light came in packets or quanta that the field of quantum mechanics emerged and unintentionally solved the ultraviolet catastrophe.”