30
Second
Break
Browse
Categories
Friends
About
Random →
Browse
Categories
Friends
About
Random →
© 2026 30secondbreak.com
Browse
1 break
Search
All
Biology
Computing
Earth & Space
Economics
Engineering
Food Science
History
Language
Maths
Mind
Music & Sound
Physics
Why a falling pole can be held up: feedback, and the PID controller
A pole on a cart wants to fall, and a controller that watches the lean and shoves the cart can hold it up. But how hard it pushes matters: too weak and it…
Engineering
4 min read
29 Oct