How to use Spectral-line in a sentence
Thus a monochromatic image of the sun, formed of a great number of successive images of the spectral line employed, will be built up on the plate.
In order to bring a spectral line upon the camera slit, the slit is widely opened and the plane mirror (f) rotated until the line is seen.
The irregularities incidental to use of the spots are escaped by comparing the relative Doppler displacements of the same spectral line as given by the receding and advancing limbs of the sun.
A few CDS catalogs do not contain celestial coordinates; spectral line wavelength lists are the obvious example.
As a step towards removing this difficulty we notice that the energy of a vibration such as is represented by a spectral line has the peculiarity of being unable to exist (so far as we know) without suffering dissipation into the ether.Advertisement