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- Timeline of invention (28171 bytes)
3: ...s ambiguity, the date of the first practical, fielded version of the invention is used here.
60: * [[Odometer]] : [[Ancient Rome|Rome]]: [[Archimedes]]?
66: ...ntury BC|200s BC]]: Compound [[pulley]]: [[Archimedes]]
74: * [[1st century]]: [[Rudder|Stern mounted rudder]] in [[History of China|China]]
83: * [[9th century|800s]]: [[Black powder|Gunpowder]] in [[History of China|China]] - List of inventors (14020 bytes)
11: *[[Archimedes]], (circa 287 BC-212 BC), [[Greece]]
12: *[[Manfred von Ardenne]], (1907-1997), [[Germany]]
14: ...s]],(1927 - June, 1996)of the [[Canada|Canadian]] Department of Agriculture — instant mashed po...
19: *[[Robert Baden Powell]]- scouting movement
22: ... U.S. solar inventor and developer; architectural designer. - Fume hood (2584 bytes)
1: ...od''' device common to [[chemistry]] laboratories designed to keep hazardous fumes out of the room air...
5: ...Because of their shape they are generally dim inside, so many have internal lights with gas-proof cove...
9: ...e released to the open air ([[eg]]. [[vinyl chloride]]).
13: To determine whether a chemical is likely to require a ...
15: ...f you are going to start using a hood you haven't dealt with before, read the manual, or even better a...
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