The New Encyclopaedia Britannica: -[30] Macropaedia: knowledge in depthEncyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 133
... light source and an accurately centred optical system . Objects may be examined with either transmitted or inci- dent light . Most of the work in biology is with transmit- ted light ; the opposite is true for materials such as metals ...
... light source and an accurately centred optical system . Objects may be examined with either transmitted or inci- dent light . Most of the work in biology is with transmit- ted light ; the opposite is true for materials such as metals ...
Page 134
... light between accurately known limits of wavelength in the ultraviolet portion of the spectrum have combined to make practical use of ultraviolet light for excitation of fluorescence ( conversion of ultraviolet light to visible light ) ...
... light between accurately known limits of wavelength in the ultraviolet portion of the spectrum have combined to make practical use of ultraviolet light for excitation of fluorescence ( conversion of ultraviolet light to visible light ) ...
Page 547
... light . For example , where this light was red , the final dyes absorb blue and green . Of the spectrum , this therefore leaves red light to go through the film . In a modification called the substantive process , the ap- substantive ...
... light . For example , where this light was red , the final dyes absorb blue and green . Of the spectrum , this therefore leaves red light to go through the film . In a modification called the substantive process , the ap- substantive ...
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19th century Africa agricultural American animals atoms beam body carbon carbonaceous chondrites centimetres central centre century chemical chondrites church colour common court crater crystal cultural deposits Descartes early Earth economic electron Europe example existence experience facies feldspar France gastropods impact craters important Indian industry iron kilometres known labour Lake land lens lenses major material ment mental metamorphic metamorphic rocks metaphysics meteor meteorite meteoroids methods metres Mexican Mexico Mexico City Mi Fei mica Michelangelo microscope migration miles military mimicry mind minerals mining minority group miracles Mississippi Mithra modern dance Moldavia molecular molecules Molière movement nature objects occur olivine organisms pattern percent person philosopher physical plagioclase political population pressure produced region result river rock Roman social society South species structure surface temperature theory tion trans ture types United