The Science of Common Things: A Familiar Explanation of the First Principles of Physical Science : for Schools, Families, and Young Students

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Ivison & Phinney, 1859 - Physics - 323 pages
 

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Page 87 - He answered and said unto them, When it is evening, ye say, It will be fair weather: for the sky is red. 3 And in the morning, It will be foul weather to-day: for the sky is red and lowering.
Page 152 - Spaniard against the cold of winter, is also in summer used by him as protection against the direct rays of the sun: — and while in England, flannel is our warmest article of dress, yet we cannot more effectually preserve ice than by wrapping the vessel containing it in many folds of softest flannel.
Page 154 - This commotion is mainly produced by the ascending and descending currents of hot and cold water. The escape of steam from the water contributes also to Increase this agitation.
Page 156 - If a fire be very fierce, the air and vapor are expelled so rapidly, that the bubbles are very numerous ; and (towering one above another) reach the top of the kettle, and fall...
Page 20 - Force of gravity is a term used to denote the attraction between the earth and bodies upon or near its surface. It always acts in a straight line between the center of the body and the center of the earth. The force of gravity varies at points on the earth's surface. It is slightly less on the top of a high mountain than at the level of the sea. For this reason the weight of a body also varies. But if the weight of a body at any place be divided by the force of gravity at that place, the result is...
Page 257 - The ray SC is also divided into the three colors. The blue (which is bent most) enters the eye ; and the other two fall below it. Thus, the eye sees the blue of C, and of all drops in the position of C ; the yellow of B, and of all drops in the position of B ; and the red of A, and of all drops in the position of A : and thus it sees a rainbow.
Page 238 - It would be so, unless the parts destroyed were perpetually renewed ; but as a lamp will not go out so long as it is supplied with fresh oil, neither will the body be consumed so long as it is supplied with sufficient food. Q. What is the principal difference between the combustion of a fire or lamp, and that of the human body ? A.
Page 162 - Would a metal pot serve to keep water hot if it were DULL and DIRTY ? A. No. It is the bright polish of the metal which makes it a bad radiator: if it were dull, scratched, or dirty, the heat would escape very rapidly. Water in hot weather is also kept cooler in bright metal than in dull or earthen vessels.
Page 151 - Because the dry skin prevents the wind from penetrating to their body ; and the air (between the hairs of the fur) soon becomes heated by the body ; in consequence of...
Page 265 - Because the distance between the front and back' of the eye is so great, that the image of distant objects is formed in front of the retina^; but when objects are brought near to the eye, their -image is thrown farther back, and made to fall on the retina.

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