Author Archives: Andrea

Mr. Feynman goes to Washington

BBC: The Challenger Disaster. (YouTube, 1.5 hours)

This movie tells the story of the Space Shuttle Challenger disaster in 1986 and Richard Feynman‘s work in the Rogers Commission.

By the way, you can watch the Presidential Commission on the Space Shuttle Challenger Accident Hearing of February 25, 1986, on YouTube – all 5.5 hours of it. And here is Feynman’s demonstration that the O-rings lose their flexibility in ice water (YouTube, 1:16min).

Kürzlich lief in der ARD eine deutsche Synchronfassung des Films unter dem Titel Challenger – ein Mann kämpft für die Wahrheit. (ARD Mediathe, 1,5 Stunden, verfügbar bis 28.11.2021 05 Uhr)

Along which way does the energy go?

Veritasium: The Big Misconception About Electricity. (YouTube, 14:47min) “The misconception is that electrons carry potential energy around a complete conducting loop, transferring their energy to the load.”

UK’s South West Coast by Tandem

Ed Pratt: I Took My Girlfriend On Her Longest Ride Ever! [Full Film] 1000km Cycling England’s Hilliest Coast. (YouTube, 2:11 hours)

“This film follows our self-supported attempt to cycle 1000km (600 miles) around England’s hilliest coastline – the South West Coast! Join us on our seaside cycle tour and see if we survive pedalling through Somerset, Devon, Cornwall and Dorset on our 65kg touring tandem!”

I posted about this series earlier when the first episode was released. This ist the whole series in one fell swoop.

From cubic equations to the Schrödinger equation

Veritasium: This Problem Broke Math (and led to quantum physics). (YouTube, 23:28min) “A general solution to the cubic equation was long considered impossible, until we gave up the requirement that math reflect reality”. The video description contains uselful links to cubic equations and their solutions.

From Newton Fractals to Mandelbrot sets

… and here’s part two:

3Blue1Brown: How a Mandelbrot set arises from Newton’s work. (YouTube, 27:42min)

Part one was linked a few days ago.