1980s
13160_11756_3mile_island7
Screen reads ‘Entry #5 December 11, 1980 14 Men’. People in anti contamination suits take samples…
1940s
13182_27799_radio_technology3
Explains electric and magnetic fields, generation of electro-magnetic waves, behavior of radio…
1960s
7152_magnets
An electric current is applied to a compass and the needle moves. Copper wire is wrapped around a…
1940s
13182_27799_radio_technology1
Explains electric and magnetic fields, generation of electro-magnetic waves, behavior of radio…
1940s
13182_27799_radio_technology2
Explains electric and magnetic fields, generation of electro-magnetic waves, behavior of radio…