11:37

Adiabatic Cooling.

43:22

Lecture 1: Introduction to Power Electronics

7:31

Aircon service, indoor aircon service

10:58

Pump Impeller Trimming.

14:48

Ropeways

11:02

Ventilation Study by Psychrometric Diagram.

10:44

I made maps that show time instead of space

22:27

The Double Pendulum. Part 1.