When were the first electric motors developed?
1740s
By who?
Andrew Gordon
What was his job?
monk
Where was he from?
Scotland.
Where they complex?
no
What were they?
simple electrostatic devices
What kind is in a watch?
unknown
Are the ones in a watch big?
yes
How high can the rating go on big one?
100 megawatts
How many different types of sources provide the power?
electric power source type, internal construction
What does DC stand for?
direct current
What about AC?
alternating current
Who discovered Ampere's force law?
André-Marie Ampère
When?
1820
Did Micheal Faraday show something?
yes
when?
1821
What did he change Electrical energy into?
mechanical energy
Did he do this with a magnet?
yes
What did he put the wire into?
pool of mercury
What has since replaced that?
permanent magne