Studies in spectrum analysis / by J. Norman Lockyer.

  • Norman Lockyer
Date:
1904
Catalogue details

Licence: In copyright

Credit: Studies in spectrum analysis / by J. Norman Lockyer. Source: Wellcome Collection.

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    the heavens are as beautiful, and, so to speak, as ma- jestic for their colour, as others are for their brilliancy. Again, those who have seen a total solar eclipse will have seen a large and interesting portion of the sun which we cannot see at any other time—a region of beautiful colours as well as of grotesque forms. So that both in the heavens and on the earth we get instances of light which is white, and of light which is coloured. So much for the senders. Now one word about the medium ; for, as we shall understand, in the case of light as in the case of electricity about which we are un- certain, and as in the case of sound about which we are a so ute y ceitain, there is no transmission of anythin^ bid a state or a condition of things, a disturbance or a vibration, between the sender and the receiver. The Igit, for instance, which appears to be given out by . candle, and which is received by our eyes, does not come bodily from tliT-t rpnrii/:* ri bullets. tL sendrr i^ rf T UC sender —in this case the candle —is simply a something which puts something else into ntobom And then there is a something fvhich hat motion. By striking a bell and ringincr , a noise may be made; but if that bell is put into then '=^'’a“sted, and the bell is Becausele'' hear it at all. How is this .» J ccause the carrier of the sound waves is the air- and Ufo Ll - P'»<=e to another \Vc know, for instance, that in our moon there is abso
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