HackerTube 中文?

The call to learn | Clifford Stoll

TEDYouTube ↗

Further reading 1

How can you tell a correct answer from understanding? →Ask two people to explain their reasoning, then change the presentation and ask them to reconstruct the answer. Peer instruction and geometric intuition offer different ways to expose gaps.This video helps answer · How do you carry a computed answer back to the world?

Caption notes

Clifford Stoll measures sound speed with an oscillator and a moving microphone. He reads frequency and finds wavelength through the distance to a repeated phase, giving each quantity in the wave-speed formula an operational meaning.

Video or transcript source ↗
Original passages · 2
was that if you multiply the frequency times the wavelength of sound or light, you get a constant. And that constant is the speed of sound.
The call to learn | Clifford Stoll · ▶ 12:25–12:35
It's 1.76 kilohertz. I measure its wavelength.
The call to learn | Clifford Stoll · ▶ 12:55–12:59

Hacker News comments

View original on HN ↗