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1. Timeline of invention (28171 bytes)
   1: This is a chronological list of [[invention]]s.
   3: ...e there is ambiguity, the date of the first practical, fielded version of the invention is used here.
   6: * 2.4 MYA: [[Oldowan|Stone tools]] in [[Africa]]
   8: ... Controlled [[fire]] in [[Cradle of Humankind|Africa]]
   37: * 3500 BC: [[Carts]] in [[Sumer]]
2. List of inventors (14020 bytes)
   5: ==Alphabetical list==
   11: *[[Archimedes]], (circa 287 BC-212 BC), [[Greece]]
   14: ...d Asselbergs]],(1927 - June, 1996)of the [[Canada|Canadian]] Department of Agriculture — instan...
   18: ...bage]], (1791-1871), [[England]] — [[Analytical engine]]
   20: ...ekeland]] (1863) - (1944), [[Belgian]]–American — [[plastic]]
3. Computer (32773 bytes)
   1: ...r case|tower]] of a [[personal computer]] (specifically a [[Power Mac G5]]).]]
   3: ...given appropriate input data, then it can automatically solve the problem or predict the behavior of t...
   4: ...e theory, design, and application of computers is called '''[[computer science]].'''
   8: ...antum particles or any other well-understood physical phenomenon. Although computers have been built ...
   10: ...ed is mapped as closely as possible onto the physical phenomena being exploited. For example, electro...
4. Electricity (13894 bytes)
   1: ...e electrical effects are discussed under [[electrical phenomenon]] and [[electromagnetism]].
   6: ...ge|Greek]] ''ēlektron'' = "[[amber]]", which came from an old [[root (linguistics)|root]] ''&#275...
   8: ...been alleged to be [[battery (electricity)|electrical batteries]].
   10: ...[Leyden jar]], a type of [[capacitor]] for electrical energy in large quantities, was invented at [[Le...
   16: ...d by society, in that fundamental units of electrical measurement are named after them.
5. Gallium (9500 bytes)
   20: | [[Chemical series]]
   26: | [[Density]], [[Mohs hardness scale|Hardness]]
   32: ...="2" align="center" | [[Image:Ga,31.jpg|125px|Typical (melted blob)]] [[Image:Gallium1_640x480.jp...
   39: | [[Atomic radius]] (calc.)
   60: ...an="2" align="center" bgcolor="#cccccc" | '''Physical properties'''
6. Germanium (8776 bytes)
   26: | [[Density]], [[Mohs hardness scale|Hardness]]
   37: | [[Atomic radius]] (calc.)
   58: ...an="2" align="center" bgcolor="#cccc99" | '''Physical properties'''
   79: | 0.0000746 [[Pascal|Pa]] at 1210 K
   87: | 2.01 ([[Pauling scale]])
7. Molybdenum (10247 bytes)
   19: | [[Chemical series]]
   25: | [[Density]], [[Mohs hardness scale|Hardness]]
   57: ...lspan="2" align="center" bgcolor="ffc0c0"|'''Physical properties'''
   78: | 3.47 [[Pascal|Pa]] at 3000 K
   86: | 2.16 ([[Pauling scale]])
8. Nitrogen (10073 bytes)
   1: ...er | number=7 | symbol=N | name=nitrogen | left=[[carbon]] | right=[[oxygen]] | above=- | below=[[phos...
   8: {{Elementbox_section_physicalprop | color1=#a0ffa0 | color2=green }}
   14: {{Elementbox_heatcapacity_jpmolkat25 | (N₂)<br />29.124 }}
   22: {{Elementbox_atomicradiuscalc_pm | [[1 E-11 m|56]] }}
   29: {{Elementbox_cas_number | 7727-37-9 }}
9. Silicon (13233 bytes)
   1: ...ft=[[aluminium]] | right=[[phosphorus]] | above=[[carbon|C]] | below=[[germanium|Ge]] | color1=#cccc99...
   8: {{Elementbox_section_physicalprop | color1=#cccc99 | color2=black }}
   16: {{Elementbox_heatcapacity_jpmolkat25 | 19.789 }}
   24: {{Elementbox_atomicradiuscalc_pm | [[1 E-10 m|111]] }}
   35: {{Elementbox_cas_number | 7440-21-3 }}
10. Computer display (4276 bytes)
    1: ...ation mechanism". Computer displays are sometimes called heads, especially when talking about how many...
    6: * [[Cathode ray tube]] (CRT)
    7: ...ve TV and computer bands ([[SVGA]], [[PAL]], [[SECAM]]; [[NTSC]]).
    11: ...dern CRT display has considerable flexibility: it can often handle all [[Resolution#Video_monitors|res...
    15: ... because of the similarity to their electromechanical predecessors.
11. Inorganic chemistry (2930 bytes)
    1: ...he many which are based upon chains or rings of [[carbon]] atoms, which are termed organic compounds a...
    3: ==Categories of [[inorganic chemical reaction]]s==
    4: There are four categories of inorganic chemical reactions: [[combination reaction]]s, [[decompos...
    8: ...], such as [[salt]], [[asbestos]], [[silicate|silicates]], ...
    13: ...ber optical cables]] and a great many [[catalysis|catalysts]].
12. Tim Berners-Lee (7363 bytes)
    2: ...] of the [[World Wide Web]] (along with [[Robert Cailliau]]) and head (president) of the [[World Wide...
    4: ==Early life and career==
    6: ...[television]]. He was also at Oxford where he was caught hacking with a friend and was subsequently ba...
    8: He worked at [[Plessey|Plessey Telecommunications Limited]] in [[1976]] as a programmer, and i...
    12: ...mation among researchers. With help from [[Robert Cailliau]] he built a prototype system named [[Enqui...
13. Physics (25628 bytes)
    4: ...t they form in the bulk. The properties of a chemical are determined by the properties of the underlyi...
    6: ... to developing the mathematical structure of physical theories.
    10: === Theoretical and experimental physics ===
    12: ...l physicists have specialized in either [[theoretical physics]] or [[experimental physics]], and in th...
    15: ... theory in high-energy physics for which no practical experimental test has ever been devised.

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