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- Archimedes (13735 bytes)
8: ...s and very close to shore for them to ignite, an unlikely scenario during a battle.
12: ...nd 3 + 10/71. He was the first, and possibly the only, [[ancient Greece|Greek]] mathematician to intro...
24: ...les, [[paraboloid]]s, and [[hemisphere]]s. Using only [[ancient Greece|ancient Greek]] [[geometry]], h...
28: ...ysis]] had been carried out successfully. We can only speculate about the effect that the "method" wou...
59: ...noble and vulgar, he devoted his earnest efforts only to those studies the subtlety and charm of which... - Totem pole (20143 bytes)
6: ...plorers along the coast indicate that poles certainly existed at that time, although small and few in ...
22: ...eighbors of the Tsimshian on the Northern B.C. mainland, the [[Haisla]] and [[Nuxᬫ]] (Bella Coola) a...
28: ...tish Columbia (Vancouver Island and the nearby mainland) and of Northwestern Washington State shared a...
34: ...ed with imperfections in the wood, and by how cleanly the adzing follows the contour of the forms. Thi...
70: ...Hunt in 1988, and measures over 6 feet (1.8 m) in diameter. It is carved in the Kwakiutl (Kwakwaka'wakw) sty... - Softball (19057 bytes)
30: ...ce is equidistant from home plate at all points, unlike the outfield fence in baseball, which is usual...
40: ...y a circle surrounding the pitching plate 8 ft in diameter. The catcher plays behind home plate, squatting t...
62: ...gloves, made of leather or similar material, but only the catcher and first baseman may wear mitts; mi...
64: ...o more than 34 in (86 cm) long, 2.25 in (6 cm) in diameter, or 38 oz. (1kg) in weight.
74: ...batting second. Seven innings constitute a game, unless extra innings are required to break a tie. - Atom (12300 bytes)
30: | Diameter:
43: ...fferentiable as a certain [[chemical element]]. Only 90 elements (of 112 now known) have been identif...
58: ... this to the size of the [[proton]] which is the only particle in the [[nucleus]] of the hydrogen atom...
80: ...ly most outward is the valence shell, even if it only has one electron.
94: ...is all that we can observe since the universe is only about 14 billion years old. - Electron microscope (5936 bytes)
32: ...ng basket]]. The purple ball is one micrometer in diameter. To display the total area of this fascinating st... - Hubble Space Telescope (50930 bytes)
26: |'''Diameter'''||2.4 m
54: ...c for a telescope with a [[mirror]] 2.5 m in diameter. The second major advantage would be that a spac...
60: ...[reflecting telescope]] with a mirror 3 m in diameter, known provisionally as the Large Orbiting Telesc...
68: ...he scale of the project, with the proposed mirror diameter reduced from 3 m to 2.4 m, both to cut ...
88: ...quately withstand frequent passages from direct sunlight into the darkness of Earth's [[shadow]] which... - Alfalfa (6719 bytes)
18: ...nial flowering [[plant]], ''Medicago'', most commonly referring to ''M. sativa'' L., also called '''lu...
47: ...y into bales. There are three types of bales commonly used for alfalfa. Small "square" bales--actually...
49: ...s, typically 4.5 to 6 feet (1.4 to 1.8 meters) in diameter and weighing upwards of 1,000 pounds. These bales... - Parthenon (12682 bytes)
13: ...s high. The corner columns are slightly larger in diameter. The stylobate has an upward curvature towards it...
17: [[image:ac.parthenon4.jpg|thumb|right|300px|Only a few sculptures remain on the Parthenon.]]
19: ...es both internally and externally. These survive only in part, but there are good descriptions of most...
27: ...igion for close to a thousand years. It was certainly still intact in the 4th century AD, by which tim...
50: ...some scholars have argued that the Parthenon was only ''used'' as a treasury. While this opinion was f... - Helicopter (20080 bytes)
5: ...ywhere with a clearing a rotor disk and a half in diameter.
19: ...cept that instead of moving the entire aircraft, only the wings themselves are moved. The helicopter's...
29: ...power available for forward flight. This is commonly known as slip-streaming and can occur while in a...
70: ...rge loads. The Belvedere had a production run of only 26 and went into [[Royal Air Force|RAF]] service...
82: ...n the [[United States Navy|U.S. Navy]] it is commonly and properly referred to as the '''[[flight deck... - Charles Babbage (13539 bytes)
16: ...land Place, London. They had eight children, but only three lived to adulthood. Charles' father, his w...
57: ...ld stretch to 25 feet long. Babbage constructed only small test parts for his new engine; a full engi...
62: ...ep. It was a marvel of mechanical engineering. Unlike the Analytical Engine that he continually twea...
76: He only once endeavored to enter public life, when, in [... - Frederick Cook (12772 bytes)
15: In 1903 Cook led an expedition to [[Mount McKinley]], which resulted in his circumnavigation of th...
21: ==The 1906 Mt. McKinley Climb==
24: ...ce of Cook's presence between the Gateway and McKinley has ever been found: his photos' vistas, his tw...
29: ... crossing [[Nares Strait]] to Annoatok on the Greenland side in the spring of 1909, allegedly almost d...
33: ...ters launched a campaign to discredit Cook, even enlisting the aid of socially-prominent persons outsi... - Aperture (3151 bytes)
6: ... of the [[eye]]—it controls the effective [[diameter]] of the lens opening. Reducing the aperture size...
12: ...is calculated by dividing the focal length by the diameter of the actual diaphragm. So if you have for examp... - Depth of field (8291 bytes)
2: ...ocus]]. For any given [[lens]] setting, there is only one distance at which a subject is in focus, but...
6: ...border is known as "[[circle of confusion]]." The diameter of these circles increases with distance from the...
9: ...e error is usually set at 0.002 in (0.05 mm) diameter. For [[16mm film|16mm film]], where the imag...
11: ...he film is used for each image and the amount of enlargement is usually much less.)
28: ... the camera-to-subject distance. While it is commonly said that lenses of short focal length have grea... - Camera (4262 bytes)
3: ...ce for capturing the light at the other end. This diameter of the aperture is often controlled by an [[Diaph... - Pinhole camera (6994 bytes)
8: ...esult in a less clear image. Additionally, as the diameter of the hole approaches the thickness of the mater...
14: A method of calculating the optimal pinhole diameter was first attempted by [[Josef Petzval]].
19: Where d is diameter, f is focus length (distance from hole to photogr...
29: ...punched or drilled using a sewing needle or small diameter bit through a piece of tinfoil or thin aluminum o...
40: ...r of the pinhole can be determined by knowing the diameter of the needle or drill used to make the hole. The... - March 23 (10340 bytes)
31: *[[1989]] - [[Stanley Pons]] and [[Martin Fleischmann]] announce [[co...
32: *1989 - A 1,000-foot diameter [[Near-Earth asteroid]] misses the [[Earth]] by 4...
72: *[[1952]] - [[Kim Stanley Robinson]], [[science fiction]] author
126: * [http://www.tnl.net/when/3/23 Today in History: March 23] - Cigarette (11302 bytes)
2: ...ed end, inserted in the mouth. The term, as commonly used, typically refers to a tobacco cigarette.
35: * Slims (Cigarette is of smaller diameter)
36: * Wides (Cigarette is of larger diameter)
48: ... where the age is 18). However, the minimum age only concerns the purchase of tobacco, not use. - Roller coaster (14862 bytes)
15: ... track divided into multiple sections or blocks. Only one train is permitted to be in a block at once....
17: ... was running), then allow #1 into the station to unload.
21: ...gle-person wheeled sled running through a 13-foot diameter loop. None of these tracks were complete circuits...
27: ...st roller coaster to use a tubular steel track. Unlike conventional wooden rails, tubular steel can b...
29: ...allest and second fastest roller coaster, second only to Six Flags Great Adventure's Kingda Ka]] - Avocado (6755 bytes)
15: ...erate freezing temperatures, and so can be grown only in subtropical and tropical climates.
23: ...are particularly commonly available, 'Hass' (commonly misspelled 'Haas') and 'Florida'. The former is ...
25: ..., such as the Hass, have a tendency to bear well only in alternate years. After a season with a low y... - Mosquito (10897 bytes)
15: ...illimetre|mm]] (0.6 inch). Mosquitoes weigh only about 2 to 2.5 [[milligram|mg]] (0.03 to 0....
21: ...ing a red ringed white bump about a centimeter in diameter. This bump can itch for days and over-scratching ...
28: ...fe cycle in 14 days at 20 °C (68 °F) and only ten days at 25 °C (77 °F). Some species ...
60: ...tists have added that these plants are effective only when the leaves are crushed and used.
62: ... found use in a variety of devices including a downloadable software which is claimed to thwart the in...
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