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- Helicopter (20080 bytes)
5: ...]] vertically. Subject only to refuelling facilities and load/altitude limitations, a helicopter can t...
9: ...EVAC]], and [[search and rescue|air/sea/mountain rescue]]), [[police]] and civilian surveillance, carr...
13: ...u Tau" was [[4th century AD]] book in China that described some of the ideas in a rotary wing aircraft...
15: ...d (in March [[1946]]) for use in the [[United States]].
19: ...oving the entire aircraft, only the wings themselves are moved. The helicopter's rotor can simply be r... - Diving Glossary (6254 bytes)
3: ; [[Barotrauma]] : [[pressure]]-related injury.
4: ... exit the water. Typically used during scuba classes to keep track of the students, watch the gear, pr...
5: ...ng straight back up, without stops, in a pattern resembling a spike, in order to retrieve items or due...
8: ...Carbon monoxide poisoning]] : usually due to compressor maintenance errors.
11: ...els of the body causing symptoms ranging from rashes to death. - Stone Age (17593 bytes)
4: ...ke [[clay]]) were used to make [[pottery]]. A series of metal [[technology]] innovations characterize ...
6: ...s with the development of [[agriculture]], the domestication of certain animals and the [[smelting]] o...
8: ... to expand into new areas even during the metal ages. Therefore, it is better to speak of ''a'' Stone ...
11: ... they encountered technologically developed cultures. However, in general, it is believed that this pe...
13: ...nd the technology involved. This frequently involves an analysis of the [[lithic reduction]] of the ra... - Bicycle (44267 bytes)
1: ...nd forks. It sports a drop handlebar and thin tires and wheels for efficiency and aerodynamics]]
3: ...n bike|mountain bicycle]]'' features oversized tires, a sturdy frame, front shock absorbers, and handl...
5: .... With over one billion in the world today, bicycles provide the principal means of transportation in ...
7: ...eas. Beyond recreation and transportation, bicycles have been adapted for use in many occupations, in...
13: ...ians now believe that these unsteerable hobby-horses probably never existed, but were made up by [[Lou... - Motorcycle (40437 bytes)
7: ...nual readjustment of the steering by the rider gives stability. The rider sits astride the vehicle on ...
9: Variations exist: some motorcycles are equipped with floorboards instead of footpegs...
13: The world's first motorcycle, designed and built by [[Germany|German]] inventors [[...
15: ...ate 60's and early 70's who were able to produce designs faster and cheaper.
23: ...ar suspension being an integral component in the design.
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