The New Encyclopaedia Britannica: Macropaedia (19 v.)Encyclopaedia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 97
... telescopes grew steadily in size and power . The cost of construction naturally in- creased as well , often in a way difficult to justify at the time of construction because no one can predict what a new , more powerful telescope will ...
... telescopes grew steadily in size and power . The cost of construction naturally in- creased as well , often in a way difficult to justify at the time of construction because no one can predict what a new , more powerful telescope will ...
Page 100
McMath solar telescope Radar detection Jodrell Bank radio telescope parabolic reflector altazimuth drive. tion . If a thin , weak lens ( called a correcting plate ) is placed at this point , it can be shaped so as to correct completely ...
McMath solar telescope Radar detection Jodrell Bank radio telescope parabolic reflector altazimuth drive. tion . If a thin , weak lens ( called a correcting plate ) is placed at this point , it can be shaped so as to correct completely ...
Page 101
... telescope . Double telescopes . As will be noted below , radio tele- scopes have been usefully operated in pairs as an interfer- ometer . An optical interferometer , serving as an intensity interferometer , was built in Australia by ...
... telescope . Double telescopes . As will be noted below , radio tele- scopes have been usefully operated in pairs as an interfer- ometer . An optical interferometer , serving as an intensity interferometer , was built in Australia by ...
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19th century actors adiabatic process applied audience broadcasting cable called camera carpels carrier centimetres centre channels chemical chrominance circuit classical colour commedia dell'arte communications court device drama drugs early effect eigenvalues electrical electrons energy engine entropy Eocene equation Europe fabrics fibres Figure film frequency Germany Greek heat important increased industry loom machine material mechanical megahertz ment metal method metres millimetres Miocene modern modulation Oligocene operation Paleocene pattern percent performance picture play pressure production radio real tennis receiver religious Roman scanning signal space species stable equilibrium stage steam teachers teaching techniques tektites telegraph telephone teleprinter telescope television temperature tennis tetraodontiforms textile textual criticism Thailand theatre theatrical thermodynamics thermoelectric thermoreceptors tion transmission transmitted tube ture United usually warp weave weft wire yarns