Archive for the 'Physics' Category

Physics can be broadly broken down into three parts

Monday, December 5th, 2016

Dominic Walliman: The Map of Physics. Direct link to the map itself.

Dominic Walliman is a physicist and science writer and the author of the Professor Astro Cat science books.

Some links via MetaFilter: (Includes the Chasm of Ignorance).

Don’t try this at home

Thursday, December 1st, 2016

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.

Schutz für 100 Jahre

Wednesday, November 30th, 2016

Deutsche Welle: Eine Schutzhülle für den Sarkophag von Tschernobyl. “Sechs Jahre lang haben Ingenieure aus der ganzen Welt an einem Luft- und strahlungsdichten Mausoleum für den Sarkophag von Tschernobyl gebaut. Jetzt wird die Hülle dem havarierten Kraftwerksblock übergestülpt.” Video dazu. (28.11.2016)

Siehe auch: Tschernobyl: Transport des Sarkophags hat begonnen. “Die Schutzhülle für die Atomruine Tschernobyl gilt als Meisterwerk der Ingenieurskunst. Noch nie wurde ein 36.000 Tonnen schweres Bauwerk über 330 Meter Entfernung bewegt. 100 Jahre soll es vor Strahlung schützen.” (14.11.2016)

Fun with Physics

Friday, November 11th, 2016

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

Friday, November 4th, 2016

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.