wave motion part 1 (1 _ 40)
52:04
wave motion (part 2)
1:28:45
ch 2 lesson 1 (light properties)
22:02
Der große Weltenbühnenumbau
56:15
Lecture 1 - Wave motion (part 1 )
2:14:45
ammeter (Q14 _ Q53)
26:24
3.6 Sinusoidal Function Transformations
2:09:11
ch 1 lesson 2 part 6 (ammeter and voltmeter reading)
2:18:36