单词	spectroscope
释义	spectroscope An optical instrument that produces a spectrum for visual observation. The first such instrument was made by R. W. Bunsen; in its simplest form it consists of a hollow tube with a slit at one end by which the light enters and a collimating lens at the other end to produce a parallel beam, a prism to disperse the light, and a telescope for viewing the spectrum (see illustration). In the spectrograph , the spectroscope is provided with a camera to record the spectrum. For a broad range of spectroscopic work, from the ultraviolet to the infrared, a diffraction grating is used instead of a prism. See also spectrometer. Spectroscope
随便看	radiocarbon dating radiochemistry radiogenic radiography radioisotope radioisotope imaging radiolocation radiology radiolysis radiometric dating radionuclide radiosonde radiotherapy radiotransparent radium radius of curvature radius of gyration radius vector radon rainbow RAM Raman effect ramjet Ramsay, Sir William Ramsden eyepiece

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