Things: A Volume of Objects Devised by Man's Genius which are the Measure of His CivilizationGeoffrey Grigson, Charles Harvard Gibbs-Smith Hawthorn Books, 1957 - 466 Seiten |
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Seite 143
... lamp or the electric discharge lamp . The filament lamp depends on heating a continuous filament of metal or carbon to incandescent heat inside a glass bulb from which all air has been exhausted or in which an inert gas has been ...
... lamp or the electric discharge lamp . The filament lamp depends on heating a continuous filament of metal or carbon to incandescent heat inside a glass bulb from which all air has been exhausted or in which an inert gas has been ...
Seite 144
... lamp . A human hair is half as thick again as the filament of tungsten wire for a 230 - volt , 100 - watt lamp , and yet the permissible variation in diameter is only two - and - a - half per cent . If a difference in size as great as ...
... lamp . A human hair is half as thick again as the filament of tungsten wire for a 230 - volt , 100 - watt lamp , and yet the permissible variation in diameter is only two - and - a - half per cent . If a difference in size as great as ...
Seite 237
... lamp and its flame occupied little room . With this advantage the revolving light became a practical proposition ... lamp of ductile tung- sten was made practical . Soon large filament lamps were being made for lighthouses , and today ...
... lamp and its flame occupied little room . With this advantage the revolving light became a practical proposition ... lamp of ductile tung- sten was made practical . Soon large filament lamps were being made for lighthouses , and today ...
Inhalt
GROTTO at Painshill Park Surrey SirènChina | 186 |
Kircher Ars magna lucis | 294 |
Mavungu Pitt Rivers Museum | 399 |
Urheberrecht | |
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Ambroise Paré ancient Arabic bath became blade bone Britain Bronze Age built carved century A.D. China Chinese cloth colour cylinder developed dirhem earliest early East Egypt Egyptian eighteenth century engine England English Euripides Europe feet fibres fire flint fountain pen France glass gold grains Greece Greek grotto hand horse ILLUSTRATION inches instrument internal-combustion engine invented Iron Age King known lamp later London machine material medieval ment mesolithic Mesopotamia metal Middle Ages millennium B.C. modern Mohenjo-daro Museum Mycenaean neolithic nineteenth century painted palaeolithic patented plough Pound printed produced razor Roman rope round round barrow rubber safety-pin seventeenth century shape sickle silk silver sixteenth century sledges soap steam stone Sumerian tapestry teeth thermoscope thread tion toothpick totem totem poles Tower Pound tree Troy Troy Pound tube turn tury tyres weight wheel wood wooden ziggurat