The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 247
... wavelengths 2000 to 3800 angstrom units ( one angstrom is 10-10 metre , or 0.1 nanometre ) ; and far ultraviolet , with wavelengths 100 to 2000 angstrom units . ultraviolet radiation injury , tissue damage and changes produced by ...
... wavelengths 2000 to 3800 angstrom units ( one angstrom is 10-10 metre , or 0.1 nanometre ) ; and far ultraviolet , with wavelengths 100 to 2000 angstrom units . ultraviolet radiation injury , tissue damage and changes produced by ...
Page 583
... wavelength is measured from crest to crest or trough to trough ; in longitudinal waves ( see wave , lon- gitudinal ) , it is measured from compression to compression or rarefaction to rarefaction . Wavelength is usually denoted by the ...
... wavelength is measured from crest to crest or trough to trough ; in longitudinal waves ( see wave , lon- gitudinal ) , it is measured from compression to compression or rarefaction to rarefaction . Wavelength is usually denoted by the ...
Page 584
... wavelengths , they will move faster . Thus , seis- mic waves , being composed of both longitudi- nal waves ( P , primary ) and transverse waves ( S , secondary ) , move with two velocities through the Earth . Longitudinal waves , such ...
... wavelengths , they will move faster . Thus , seis- mic waves , being composed of both longitudi- nal waves ( P , primary ) and transverse waves ( S , secondary ) , move with two velocities through the Earth . Longitudinal waves , such ...
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