Search results
|
|
Showing below 14 results starting with #21.
View (previous 20) (next 20) (20 | 50 | 100 | 250 | 500).
No article title matches
Page text matches
- Carbon (15360 bytes)
4: ...edrally to four others, making a 3-dimensional network of puckered six-membered rings of atoms.
5: ...y to three other atoms, making a 2-dimensional network of flat six-membered rings; the flat sheets ar...
6: ...lly, forming spheroids (of which the most well-known and simplest is the buckminsterfullerene or buck...
10: ...: a low-density web of graphite-like clusters, in which the atoms are bonded trigonally in six- and s...
11: ...ed trigonally in a curved sheet that forms a hollow cylinder. - Helium (36603 bytes)
2: {| width="250" border="1" cellpadding="2" cellspacing=...
7: | rowspan="3" valign="center" | <br>'''He'''<br>[...
44: | 0.152 [[watt|W]]/([[metre|m]]·[[kelvin|K]])
74: | [[van der Waals radius]]
83: {| border="1" cellspacing="0" cellpadding="2" width="100%" - Hydrogen (20221 bytes)
8: <tr><td rowspan="3" valign="center"> <br />'''H'''<br />...
28: <td>[[Atomic weight]] </td><td>1....
34: <td>[[van der Waals radius]] </td><td>120...
73: ... </td><td> 0.1815 [[watt per metre-kelvin|W/(m*K)]]</td></tr>
80: {| border="1" cellspacing="0" cellpadding="2" width="100%" - Iron (23778 bytes)
7: <td rowspan="3" valign="middle">'''Fe'''<br>[[Ruthenium|R...
28: <td align="center">lustrous metallic <br>with a greyish tinge<br>[[Image:Fe,26.jpg|125px|]]<...
32: <td>[[Atomic weight]] </td><td>55...
38: <td>[[van der Waals radius]] </td><td>no ...
40: ...td><td><nowiki>[</nowiki>[[Argon|Ar]]<nowiki>]</nowiki>3d<sup>6</sup>4s<sup>2</sup></td></tr> - Aluminium (26079 bytes)
1: ...m]] | right=[[silicon]] | above=[[boron|B]] | below=[[gallium|Ga]] | color1=#cccccc | color2=black }}
29: {{Elementbox_thermalcond_wpmkat300k | 237 }}
48: ...of [[transport]]ation and building in which light weight, durability, and strength are needed.
51: ...age:Aluminum_Metal.jpg|thumb|left|Aluminium metal with an American [[penny]] for size comparison]]
52: ... a thin layer of [[oxidation]] that forms quickly when it is exposed to air. Aluminium is about one-t... - Canary (4349 bytes)
2: ...box_image | image = [[Image:Canary.jpg|250px|Yellow canary]] | caption = Domesticated Canary}}
14: ...''' (''Serinus canaria'') is a small [[songbird]] which is a member of the [[finch]] [[family]].
16: ... given by the Romans in reference to the numerous wild dogs that lived there.
18: ... semi-open areas such as [[orchard]]s and copses, where it [[nest]]s in [[bush]]es or [[tree]]s.
20: ...[European Serin|Serin]], and has more grey and brown in its [[plumage]]. - Chemical formula (5472 bytes)
1: ...uch a series is called the [[homologous series]], while its members are called homologs.
6: For example [[methane]], a simple molecule consisting of one [[carbon]]...
9: and glucose with six [[carbon]] atoms, twelve [[hydrogen]] atoms and six [[oxygen]] atoms h...
12: ...ub>2</sub> or H<sub>2</sub>C=CH<sub>2</sub>. The two dots or lines indicate that a double bond connec...
14: A triple bond may be expressed with three dots or lines, and if there may be ambig... - Bunsen burner (2198 bytes)
4: ... Wilhelm Bunsen]] but it is only named after him, whose laboratory assistant, [[Peter Desdega]], in [...
6: ...pane and butane). At the time of its invention it would have mostly burnt [[coal gas]].
8: ... hole at the bottom of the tube and is directed upward through the tube. There are perforations in th...
10: ... the flame which are heated to [[incandescence]]. When the burner is regulated to produce a hot, blue... - Ice Age (15809 bytes)
3: ...eriods during ice ages and 'interglacial' for the warmer periods.
5: During the last few million years there have been many glacial period...
9: ...ia.edu/aberjame/histgeol/agassiz/glacial.htm]. Between 1825 and 1833 [[Jean de Charpentier]] assemble...
11: ...ing the current ice age. The far earlier ice ages were unsuspected.
15: ...ccurred from 460 to 430 million years ago. There was an extensive ice age from 350 to 260 million ye... - Renewable energy (27996 bytes)
1: ... fuels nor nuclear power are considered to be renewable. For a discussion of this, please see the [[#...
3: ...source. [[Fossil fuel]]s, while theoretically renewable on a very long time-scale, are exploited at r...
5: ...esting]] are [[electricity generation]] through [[wind turbine]]s or [[photovoltaic]] cells, or produ...
7: ...alorie|megacal]] or 41,868 MJ of energy.[http://www.iea.org/Textbase/stats/unit.asp]
9: ...enewable energy use in modern societies see [[Renewable energy development]]. - Solar power (20128 bytes)
1: ...ready in widespread use where other supplies of power are absent such as in remote locations and in s...
3: ...l energy. The generally accepted standard is 1020 watts per square meter at sea level.
5: ...photosynthesis]]. We use this energy when we burn wood or [[fossil fuel]]s.
7: ==Classifications of solar power==
9: Solar power can be classified as direct or indirect. - Biofuel (7929 bytes)
1: ...products, such as manure from cows. It is a [[renewable energy]], unlike other [[natural resource]]s ...
2: ...o the atmosphere by using them to replace non renewable sources of energy.
4: ...y 17% and 19% respectively, of their energy needs with bioenergy. Biomass can be used both for centra...
11: * [[Wood]] — see [[wood fuel]]
12: * straw and other dried plants - Automobile (19750 bytes)
4: ... has seats for the [[driving|driver]] and, almost without exception, one or more passengers.
11: [[Image:Cars-stanleysteamcar-amoswolfe.jpg|thumb|300px|The 1923 Stanley Steam Car]]
13: ...in [[Mannheim]], resp. [[Gottlieb Daimler]] and [[Wilhelm Maybach]] in [[Stuttgart]] (also inventors ...
15: ...[[disc brake]] in the city. [[Electric vehicle]]s were produced by a small number of manufacturers.
19: ... in [[railway]] [[locomotive]]s. The red flag law was not repealed until [[1896]]. - Vegetarianism (28920 bytes)
4: ...honey]], [[milk]] and other [[dairy product]]s as well as [[egg (food)|egg]]s. This is more precisely...
6: ...ry became increasingly popular in [[Western world|Western]] countries as a result of [[ethics|ethical...
12: ...vegan]]s, though some reserve this term for those who additionally avoid usage of all kinds of animal...
14: ...s and milk. They do not, however, eat cheese made with animal [[rennet]], and for ethical reasons oft...
20: ...lly spiritually based like Fructarianism (see below).
View (previous 20) (next 20) (20 | 50 | 100 | 250 | 500).