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- Timeline of invention (28171 bytes)
6: * 2.4 MYA: [[Oldowan|Stone tools]] in [[Africa]]
8: ...YA: Controlled [[fire]] in [[Cradle of Humankind|Africa]]
26: * [[Cloth]] woven from [[flax]] fiber
112: * [[1589]]: [[Stocking frame]]: [[William Lee]]
134: ...quadrant]]: [[Thomas Godfrey (inventor)|Thomas Godfrey]] - List of inventors (14020 bytes)
12: *[[Manfred von Ardenne]], (1907-1997), [[Germany]]
53: *[[Jacques-Yves Cousteau|Jacques Cousteau]], [[France]] — [[Aqua-Lung|aqualung]]
56: ...illiam Cullen]] — mechanical / chemical [[refrigeration]]
84: ...leming]], (1848-1945), [[England]] — vacuum diode
87: *[[Benjamin Franklin]], (1706-1790), [[United States|USA]] &mdas... - Capacitor (29664 bytes)
9: [[Image:Dielectric.png|frame|The electrons in the molecules shift toward th...
14: :<math>C = \frac{Q}{V}</math>
32: :<math>i(t) = C \frac{dv(t)}{dt}</math>
34: The [[impedance]] in [[frequency domain]] can be written as
36: :<math>Z = \frac{1}{j \omega C} = - j X_C </math> - Computer mouse (29399 bytes)
1: ...encoding disks include light holes.<br>'''4:''' Infrared LEDs shine through the disks.<br>
9: [[Image:firstmouseunderside.jpg|frame|The first computer mouse held by inventor [[Do...
11: ...with spring by ''Opocentsky'', 10/76, [http://www.freepatentsonline.com/3987685.html 3987685].]]
24: ... on its underside, paired with a [[light-emitting diode]] to illuminate the surface. Early optical mice,...
26: ... sensor will process 1512 frames per second: each frame is a rectangular array of 18*18 [[pixels]], an... - Modem (21628 bytes)
1: ...' (a [[portmanteau|portmanteau word]] constructed from '''mod'''ulator and '''dem'''odulator) is a [[d...
5: ...odems" transmit [[serial communications|repeating frames of data]] at very high data rates over [[micr...
7: ...lons. Heat changes an etalon's size and thus its frequency.
9: ...ans of transmitting analog signals, from driven [[diode]]s to [[radio]].
14: ...first commercial modem, the [[Bell 103]]. Using [[frequency-shift keying]], where two tones are used t... - Antimony (9093 bytes)
133: ...ndance of antimony in the [[Earth]]'s crust range from 0.2 to 0.5 [[part per million|ppm]]. Antimony ...
136: ...r]] industry in the production of [[diode]]s, [[infrared]] detectors, and [[Hall effect|Hall-effect]] ...
138: *antifriction alloys,
144: *plumbing ("lead-free" solder contains 5% Sb)
148: ...t was thought never to exist in its pure form, or from the Arabian expression "Antos Ammon", which cou... - Arsenic (12497 bytes)
146: ...nto the [[20th century]], as a [[pesticide]] on [[fruit tree]]s (resulting in neurological damage to t...
148: ... ingestion - directly or indirectly - of wood ash from CCA timber (the lethal human dose is approximat...
156: ...[[direct bandgap]], and so can be used in [[laser diode]]s and [[LED]]s to directly convert [[electricity...
161: ...nic poisoning]] were somewhat ill-defined, it was frequently used for [[murder]] until the advent of t...
172: ...groundwater is of natural origin, and is released from the sediment into the groundwater due to the an... - Gallium (9500 bytes)
135: ...semiconductor]], most notably in [[light-emitting diode]]s (LEDs).
138: ... color and its solid metal fractures [[Conchoidal fracture|conchoid]]ally like [[glass]]. Gallium meta...
147: ...semiconductor]] commonly used in [[light-emitting diode]]s).
150: ...vices (mostly [[laser diode]]s and light-emitting diodes) as the second largest end use. <br>
155: ...loy, with the trade name ''[[Galinstan]]'', has a freezing point of −20 ?C. - Germanium (8776 bytes)
194: ...ium in [[fiber optics]] communication networks, infrared [[night vision]] systems, and polymerization ...
197: ...ectors. Its oxide's [[refractive index|index of refraction]] and dispersion properties make germanium ...
199: ...he distinctive character of [[Fuzzbox|fuzzboxes]] from the early [[Rock and roll]] era.
213: ...rcially from zinc ore processing smelter dust and from the [[combustion]] by-products of certain coals...
215: ...is metaloid can be extracted from other metals by fractional [[distillation]] of its volatile tetrachl... - Nitrogen (10073 bytes)
39: ...phere. It [[condensation|condenses]] at 77 K and freezes at 63 K. Liquid nitrogen is a common [[cryo...
42: ...f [[electronic]] parts such as [[transistor]]s, [[diode]]s, and [[integrated circuit]]s, and is used in t...
44: ... Liquid nitrogen is produced by [[distillation]] from [[liquid air]].
53: ...air'' or ''phlogisticated air''. That there was a fraction of air that did not support [[combustion]] ...
60: ...t) and is acquired for industrial purposes by the fractional [[distillation]] of liquid air or by mech... - Rubidium (10211 bytes)
204: ...n include the ready availability of inexpensive [[diode laser]] light at the relevant [[wavelength]] and ...
216: ...mission of a negative [[beta particle]]. During [[fractional crystallization]], Sr tends to become con... - Solar cell (27643 bytes)
1: ...ice consisting of a large-area [[p-n junction]] [[diode]], which, in the presence of [[sunlight]] is capa...
3: ...rically used in situations where electrical power from the [[grid]] is unavailable, such as in remote ...
5: ...ell.png|thumb|250x|right|A '''solar cell''', made from a poly-crystalline silicon wafer]]
10: ...he [[etymology]] of the term "photovoltaic" comes from the [[Greek language|Greek]] ''photos'' meaning...
22: ...ls tend to be expensive, and because they are cut from cylindrical ingots, they cannot completely cov...
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