单词 | decimetre wave |
释义 | > as lemmasdecimetre wave decimetre wave n. an electromagnetic wave with a wavelength between one decimetre and one metre, corresponding to a frequency between three gigahertz and 300 megahertz (in the ultra-high frequency range). ΘΚΠ the world > matter > physics > electromagnetic radiation > [noun] > wavelength wavelength1915 decimetre wave1929 1929 Exper. Wireless Sept. 508/1 For purposes hitherto served by light-telephony, these ‘decimetre’ waves seem to possess important advantages. 1978 Neurosci. & Behavioral Physiol. 8 172 (heading) Selective action of decimetre waves on central brain structures. 2004 I. S. Robinson Measuring Oceans from Space ix. 409 Microwave backscatter is sensitive to the centimetre or decimetre waves in the spectral tail. < as lemmas |
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