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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Ivision, Blakeman, Taylor, 1857 - Science - 323 pages
 

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Page 59 - The attraction of the sun and moon upon the waters of the ocean. The moon being nearest to the earth, her attraction is six times greater than that of the sun. This attraction of the moon raises the waters of the ocean as they come under her influence by the motion of the earth on its axis. 355 How many tides are there in a day ? Two in every lunar day—a period of 24 hours 49 minutes.
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 125 - If, therefore, a person repeats 7 syllables in 2 seconds of time, and hears them all echoed, the reflecting object is 1142 feet distant; (because sound travels 1142 feet in a second, and tho words take one second to go to the reflecting object, and one second to return.) Q.
Page 168 - The air resting on the earth is first chilled, and chills the air resting on it; the air which touches this new layer of mist being also condensed, layer is added to layer ; and thus the mist seems to be rising, when in fact it is only deepening.
Page 53 - In a well cultivated and improved country the springs are comparatively few in number and not constant. While the face of a country is rough, the rainwater remains long among its inequalities, slowly sinking into the earth to...
Page 104 - In a thermometer the mercury is sealed up from the air / and rises or falls as the varying temperature of the air expands or contracts it ; but in a barometer the mercury is left exposed (or open) to the air / and rises or falls as the varying weight of the air presses upon the open column.
Page 280 - Sometimes they are elevated four or five miles high, and sometimes actually touch the earth with one of their edges ; but they are rarely discharged in a thunder storm when they are more than seven hundred yards above the surface of the earth.
Page 173 - Because white paper reflects the rays of the sun, or throws them back; in consequence of which, it appears more luminous, but is not so much heated as dark brown paper, which absorbs the rays and readily becomes heated to ignition.
Page 173 - Thus : — the air (which cases the body) absorbs as much heat from it as it can, while it remains in contact ; being then blown away, it makes room for a fresh coat of air, which absorbs more heat.

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