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Astronomical observations show that the length of the day has certainly not changed so much as the tenth of a second during the past 2000 years. The earth also revolves about the sun, having a speed of about 19 miles in a second, or 68,000 miles an hour. This motion of the earth and the other planets about the sun is one of the most stable phenomena we know.
Under the legless chair, as it were, there are two supports, at the lower end of which and between these supports revolves a heavy, nearly round wheel, with four spokes. Occasionally the wheel is made of one block of wood only, and is ornamented at the sides with numerous round-headed iron nails.
A second mould, shaped like half of the bottom of the plate, is brought down close and revolves, cutting off all the extra clay and shaping the bottom of the plate. When the very finest ware is to be made, the mould is used in quite another fashion. If a pitcher, for instance, is to be cast, the mould is made in two sections and tied tightly together.
Watch as if your life as if a thousand lives hung upon the caution of a moment; and remember, while the blue light revolves, which you now see in the vessel's bow, all things abroad go on well. You also know the pass-word for our friends, and the reception for our enemies.
The work of beating the rags is ended in a few hours, and the ensuing thin paste is drawn off into the pulp chest, this being a square box lined with lead. From the pulp chest it passes to the form of the paper machine. This form consists of an endless fine web of brass wire, which revolves around rollers.
A shaft-journal knocks when the bearings it revolves in have worn or shaken loose, and the machinery must have been running when the engineer heard the noise. Dick thought it better to light a cigarette, and was occupied shielding the match with his hands when the manager turned round.
A more desolate desert than that which surrounds the city surely does not exist. Aden itself illustrates how the whirligig of time revolves. Before the discovery of the passage round the Cape of Good Hope it was the chief entrepot for the trade between Europe and Asia.
Such, they read, is the general outline of this strange appendage, which revolves in its own plane in 10 hours 32 minutes.
The Young People may have heard it said that a savage is a grown-up child, but it seems to me even more true that a child is a savage. Like the savage, he dwells on an earth round which the whole solar system revolves, and he is himself the centre of all life on the earth. It has no meaning but as it relates to him; it is for his pleasure, his use; it is for his pain and his abuse.
Accepting the recent discovery of Copernicus, which Catholics and Protestants alike rejected, that the earth revolves round the sun, Bruno took the further step of regarding the fixed stars as suns, each with its invisible satellites.
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