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I compared also the present appearance of this nebula with the delineation which Huyghens has given of it in his Systema Saturnium... The changes tha… - William Herschel
" "I compared also the present appearance of this nebula with the delineation which Huyghens has given of it in his Systema Saturnium... The changes that are thus proved to have already happened, prepare us for those that may be expected hereafter to take place, by the gradual condensation of the nebulous matter; for had we no where an instance of any alteration in the appearance of nebula, they might be looked upon as permanent celestial bodies, and the successive changes, to which by the action of an attracting principle they have been conceived to be subject, might be rejected as being unsupported by observation.
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About William Herschel
Sir Frederick William Herschel KH FRS (German: Friedrich Wilhelm Herschel) (15 November 1738 – 25 August 1822) was a German-born British astronomer, technical expert, telescope maker, organist and composer who became famous for discovering Uranus. He also discovered infrared radiation and made many other contributions to astronomy. His sister Caroline Herschel and son, Sir John Herschel, were also notable astronomers.
Also Known As
Native Name:
Friedrich Wilhelm Herschel
Alternative Names:
Frederick William Herschel
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Sir William Herschel
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Sir Frederick William Herschel
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Additional quotes by William Herschel
It is very probable that the great stratum called the Milky Way is that in which the sun is placed, though perhaps not in the very centre of its thickness. ...We gather this from the appearance of the Galaxy, which seems to encompass the whole heavens, as it certainly must do if the sun is within it.
To conclude, if we call light, those rays which illuminate objects, and radiant heat, those which heat bodies, it may be inquired whether light be essentially different from radiant heat? In answer to which I would suggest that we are not allowed, by the rules of philosophizing, to admit two different causes to explain certain effects, if they may be accounted for by one. ...If this be a true account of the solar heat, for the support of which I appeal to my experiments, it remains only for us to admit that such of the rays of the sun as have the refrangibility of those which are contained in the prismatic spectrum, by the construction of the organs of sight, are admitted under the appearance of light and colors, and that the rest, being stopped in the coats and humors of the eye, act on them, as they are known to do on all the other parts of our body, by occasioning a sensation of heat.
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