7:16
Sextant Tutorial: The Principle of the Sextant
27:15
O Conceito Mais Mal Compreendido da Física
10:06
Why Do We Still Use 'Knots'?
21:16
Determining Latitude and Longitude from the Sun
30:12
Map and Compass (Simplified)
29:02
The Clock That Changed the World (BBC History of the World)
1:06:56
The Longitude Problem - Improving Navigation with the Harrison Clocks
17:34