SO far, I have spoken of spectroscopes as spectroscopes -as one of the instruments the improvement of which should be cared for by every student in science. Their applications will come after. As may ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Life for the 19th-century astronomer was kind of monotonous, 200 years after Galileo's ...

THE field of research which has been opened up by the spectroscope is one with which we have so recently become familiar, that it may almost be said that twenty years ago, a course of lectures on the ...