Dentist: I have to pull the aching tooth, but don’t worry it will take just five minutes.
Patient: And how much will it cost?
Dentist: It’s $90.00.
Patient: $90.00 for just a few minutes work???
Dentist: I can extract it very slowly if you like?
William SturgeonDied 4 Dec 1850 at age 67 (born 22 May 1783).English electrical engineer who devised the first electromagnet capable of supporting more than its own weight (1825). The 7-oz (200-g) magnet supported 9-lb (4-kg) of iron with a single cell's current. He built an electric motor (1832) and invented the commutator, now part of most modern electric motors. In 1836, he invented the first suspended coil galvanometer, a device for measuring current. Sturgeon also worked on improving the voltaic battery, developing a theory of thermoelectricity, and even atmospheric charge conditions. From 500 kite flights made in calm weather, he found the atmosphere is consistently charged positively with respect to the Earth, and increasingly so at increased height.« |
){kind=link}