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- Eye (21834 bytes)
1: ... but detect whether the surroundings are light or dark. More complex eyes are used to provide the [[s...
15: ...lls. They can distinguish between light and dark (day and night), but no more. This enables snails to ...
24: ...e lens, behind the iris, is a [[convex]], springy disk which focuses light, through the second humour, o...
31: ...e eye does not. The choroid gives the inner eye a dark colour, which prevents disruptive reflections w...
65: ...l acuity]] (a measure of detail). This is why the darker conditions become, the less colour objects se... - Mandible (13717 bytes)
25: ...or border'' is concave and forms the anterior boundary of the mandibular notch. Its ''lateral surface'...
26: ...cular surface for articulation with the articular disk of the [[temporomandibular joint]]; it is convex ... - Radius (bone) (8551 bytes)
29: ...f the triangular articular disk is attached; this disk separates the wrist-joint from the distal radioul... - Ulna (12105 bytes)
16: ... wrist-joint by the interposition of an articular disk.
67: ...ttachment of the apex of the triangular articular disk, and behind, by a shallow groove for the tendon o... - Vertebra (3942 bytes)
12: ...rt – the ''vertebral'' or ''neural'' arch – which encloses the '''vertebral foramen'''.
24: ...ht. The axis also houses the first intervertebral disk of the spinal, which ends in the sacrum. - Pottery (17136 bytes)
8: ... remains of non-literate cultures and help in the dating of some historic cultures as well.
19: ...ilitate easy removal of the finished piece. This disk is referred to as a bat. The wheel revolves rapi...
21: ...y virtually identical plates, vases or bowls in a day. Because of its nature, wheel work can only be u...
50: ..., as the kiln must be stoked for as long as a few days, but the pieces which emerge often have charact...
52: The western adaptation of [[Raku]] firing, a traditional [[Japane... - Glass (26176 bytes)
1: ...was originally, which can be seen in its [[conchoidal]] fracture.
5: ... will be concerned with a specific type of glass—the [[silica]]-based glasses in common use as a...
20: ...s is due to the addition of compounds such as [[soda ash]] (sodium carbonate).
30: ...he melting point to about 1000 ?C. However, the soda makes the glass water-soluble, which is obviously...
32: ...ass that absorbs [[UV]] wavelengths (biologically damaging ionizing radiation). - Cartography (10500 bytes)
3: ...red from [[measurement]] and can be stored in a [[database]], from which it can be extracted for a var...
7: The oldest known map dates from the [[5th millennium BCE]]. The oldest ma...
9: ...m the Kassite period ([[14th century BCE|14th]] – [[12th century BCE|12th centuries BCE]]) of Ba...
11: ... of the earth to within 15 per cent of the modern-day accepted value.
21: ...pping tended toward diagrammatic as well, since cadastral needs generally were met by descriptions of ... - Flag of Colorado (1126 bytes)
2: ...pes sits a circular red "C", filled with a golden disk. The blue is meant to represent the skies, the g... - Ra (2793 bytes)
2: ...heism|monotheistic]] worship of [[Aten]], the sun disk itself, was imposed on the kingdom of Egypt.
4: ...ortant god who pushed the sun across the sky each day, eventually was also absorbed into Ra, as the ce...
8: ...from attack by the monster [[Apep]] (representing darkness), who wished to devour Ra. Temporary failur...
10: ...mbols of Ra are the [[solar symbols]] of a golden disk or the symbol ⊙ (Circle with a point at its... - Sobek (2106 bytes)
9: ...bination of a [[cobra (snake)|cobra]] and the sun disk. - Anaximenes of Miletus (1082 bytes)
3: ...old predominates. In this way was formed a broad disk of earth, floating on the circumambient air. Sim... - Solar system (21174 bytes)
34: ...as [[Cubewano]]s in the main belt and [[scattered disk object]]s in the outer fringes.
43: ...pse, the Solar Nebula would have collapsed into a disk, with the [[protostar|protosun]] accreting at the...
45: ...e parent star, perhaps orbiting it in a matter of days. It has been hypothesised that while the giant...
59: The first and most fundamental of these advances was the [[Nicolaus Copern...
92: ! Day<br/>(days) - Planetary system (2476 bytes)
5: ...to make this a viable model. Accepted theories today argue that planetary systems form from a [[solar...
7: ...vely, planets may somehow form in the [[accretion disk]] which surrounds pulsars.
12: * [[Upsilon Andromedae]] - the first multiplanet extrasolar planetary s... - Planet (8450 bytes)
3: ...orbited the [[protostar]] in a dense protostellar disk before the star's core ignited and its [[solar wi...
28: ...or rocky: Planets that are similar to [[Earth]] — with bodies largely composed of [[Rock (geolog...
43: ...factor of 2.8; S/1993 243 (1) [[Dactyl (asteroid)|Dactyl]] by a factor of 1.3; and, most remarkably, [...
48: ...]s (those outside our solar system) discovered to date have masses which are about the same or larger ...
56: ... solar system. No interstellar planet is known to date, but their existence is considered a plausible ... - List of reference tables (55289 bytes)
7: ... from [http://www.squarefree.com/bookmarklets/pagedata.html#sort_table here] (control-click the "sort ...
54: == [[Standard]]s ==
55: *[[List of standards topics]] (these could easily be cross-referenc...
56: *International Standards
57: **[[List of ISO standards]] - Chloroplast (2430 bytes)
10: ..., chloroplasts seem to have arisen through a secondary event of endosymbiosis, where an eukaryotic cel...
13: ...a [[granum]]. A thylakoid looks like a flattened disk, and inside is an empty area called the thylakoid... - Venus (planet) (31010 bytes)
3: ...the "[[Evening Star]]", and when it is visible in dark skies it is by far the brightest [[star]]-like ...
5: ...vilization (the Mayans developed a religious calendar based on Venus's motion) and must have been know...
14: ... the upper atmosphere circle the planet in only 4 days, helping to distribute the heat.
18: ...ture, listed in the table, refers to cloud tops — the surface temperature is never below 400°...
21: [[Image:Venus globe.jpg|thumb|left|[[Radar]] image of the surface of Venus, centered at 180... - Neptune (planet) (18545 bytes)
9: | [[Urbain Le Verrier]]<br> [[John Couch Adams]]<br> [[Johann Gottfried Galle|Johann Galle]]
148: ...enomena. The [[Great Dark Spot]], an Earth-sized dark marking resembling the [[Great Red Spot]] of Ju...
152: ...cause it had ''just'' turned retrograde that very day; because it was stationary in the sky and only b...
154: ...rge Airy]], who asked Adams for a clarification; Adams began to draft a reply but never sent it.
156: ...[1846]], [[Urbain Le Verrier]], independently of Adams, produced his own calculations but also experie... - Pluto (planet) (26470 bytes)
124: ...1930]]. The planet was later found on photographs dating back to [[March 19]], [[1915]]. Tombaugh was ...
126: ...ules]]'', ''[[Icarus (mythology)|Icarus]]'', ''[[Idana]]'', ''[[Odin]]'', ''[[Pax (mythology)|Pax]]'',...
128: ...anet in the [[Times]] newspaper. He asked his grandaughter what she thought would be good name for it....
136: ...escopes using [[adaptive optics]] can resolve its disk.
153: ... among planets in that they are [[Tidal locking|tidally locked]] to each other. This means that Charon...
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