Uploaded November 2013 | Updated September 2026, 2 weeks ago
A short filmstrip explaining some of GE's experiments and some of their applications. Model of a 'weak magnet'. Curie metal loses magnetic properties when heated. Damping rings on spur gears reduces gear noise. Automatic lawn sprinklers at NELA Park. Super-sensitive vacuum tube controls thyratron. Voice signals used to control model electric train.
A short filmstrip explaining some of GE's experiments and some of their applications. Model of a 'weak magnet'. Curie metal loses magnetic properties when heated. Damping rings on spur gears reduces gear noise. Automatic lawn sprinklers at NELA Park. Super-sensitive vacuum tube controls thyratron. Voice signals used to control model electric train.
