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- Ptolemy (10609 bytes)
5: Ptolemy was the author of two important scientific treatises. One is the astronomical treatise that...
7: ... computational '[[Tables of Toledo]]') were of sufficient accuracy to satisfy the needs of astronomers...
11: The first part of the ''Geography'' is a discussion of t...
18: ...ps; an edition printed at [[Ulm]] in 1482 was the first one printed north of the Alps. The maps look d...
23: ...tices (such as considering the numerological significance of names) that he believed to be without sou... - List of inventors (14020 bytes)
73: ..., (1854-1932), [[United States|USA]] — roll film
83: *[[Adolf Eugen Fick]], (1829-1901) — [[contact lens]]
137: ...ited States|USA]] — [[Polaroid]] polarizing filters and the [[Land Camera]]
139: *[[Irving Langmuir]], (1851-1957), gas filled incandescent lamp, hydrogen welding
156: *[[Montgolfier]] brothers, (1740-1810) and (1745-1799), [[Fran... - Neptunium (9972 bytes)
35: <td>[[Electron configuration]] </td><td><nowiki>...
41: ... </td><td>3 forms: orthorhombic,<br> tetragonal and cubic</td></tr>
50: ... </td><td>11.59 [[scientific notation|×]]10<sup>-6</sup> [[cubic metre ...
64: <td>[[Specific heat capacity]] </td><td>u...
84: ...d><td>[[1 E_ s|2.144 E6 y]]</td><td>[[spontaneous fission|SF]] & α</td><td>4.959</td><td><sup>23... - Discus Fish (4433 bytes)
2: {{Taxobox_image | image = [[Image:Discus fish.jpg|200px|Symphysodon aequifasciatus|]] | capti...
15: ...ng the precise number of subspecies have not been finalised. Discus are most closely related to the ge...
17: ...red, and blue. The height and length of the grown fish are both about 20–25 [[centimetre|cm]] (8...
19: ...heir skin, off which the larvae live during their first few days. The young can be seen grazing off th...
21: ...cus fish or even eaten. Small chacarins like neon tetras are often found in the gut of wild discus, so th... - Color (30968 bytes)
4: ...] of the [[eye]] to distinguish three differently filtered analyses of a view. The perception of col...
143: ...ies and also somewhat among individuals intraspecifically.
152: ... and culture; for example, [[Isaac Newton]] identified the seven colors red, orange, yellow, green, b...
157: ...ge" patch, it is ''not'' emitting pure light at a fixed wavelength of around 600 nm (which is in fact ...
159: A useful quantification of this property is the [[dominant waveleng... - Mobile phone (30513 bytes)
16: ...twork costs are mostly call volume related, while fixed-line telephony has a much higher subscriber re...
18: ...]30), and the availability of relatively low-cost fixed-line networks (around $30 for unlimited local ...
24: ...the carrier will put the customer's handset identifier into its subscriber database so that the handse...
32: ...ures aimed toward personalisation, such as user defined and downloadable [[ring tone]]s and [[operator...
40: ...rent from system to system. This leads to real difficulties in component integration and so to larger ...
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