Flame, Electricity and the Camera: Man's Progress from the First Kindling of Fire to the Wireless Telegraph and the Photography of ColorDoubleday & McClure Company, 1900 - 398 pages This work examines the chief uses of fire, electricity, and photography and other discoveries and inventions at the end of 1899. |
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apparatus beam Beta Auriga blaze boiler BOLOMETER cable camera carbon century chemical chemist circuit colour common compounds conductor copper distance dynamo E. E. Barnard earth effect elec electric current electric motor electric waves electrician electromagnet employed energy engine experiment field fire flame friction fuel furnace gases Geissler tube glass Harvard Observatory heat horse-power human inch insulator invention inventor iron kinetoscope lamp less Leyden jar Lick Observatory light liquid Lord Kelvin machine magnet Marconi means mechanical metal miles minute motion motor nebula Observatory observed once ordinary oxygen pass pencil photographic photophone plate pole pounds pressure primitive produced Professor rays signals silver Siphon record solar sound South Foreland Lighthouse spectrum stars steam steam-engine steel stone storage battery substance success surface tasks tele telegraph telephone telescope temperature tion to-day tricity tube wire York zinc
Popular passages
Page 251 - yet beneath these disguises nothing but constancy itself. " There is that scattereth, and yet increaseth ; and there is that withholdeth more than is meet, but it tendeth to poverty.
Page 201 - T is not the grapes of Canaan that repay, But the high faith that failed not by the way. What at first was as much a daring adventure as a business enterprise has now taken its place as a task no more out of the common than
Page 372 - Under whatever aspect we view this cranium, whether we regard its vertical depression, the enormous thickness of its supraciliary ridges, its sloping occiput, or its long and straight squamosal suture, we meet with ape-like characters, stamping it as the most pithecoid of human crania yet discovered.
Page 181 - I arranged, around one of the upper rooms in the Albany Academy, a wire of more than a mile in length, through which I was enabled to make signals by sounding a bell. The mechanical arrangement for effecting this object was simply a steel bar, permanently
Page 181 - of about ten inches in length, supported on a pivot, and placed with its north end between the two arms of a horseshoe magnet. When the latter was excited by the current, the end of the bar, thus placed, was attracted by
Page 230 - When we sing into a piano, certain of the strings of the instrument are set in vibration sympathetically by the action of the voice with different degrees of amplitude, and a sound, which is an approximation to the vowel uttered, is produced from the piano. Theory shows that, had
Page 370 - Words without thought are dead sounds ; thoughts without words are nothing ; to think is to speak low, to speak is to think aloud.
Page 43 - to questions bearing upon molecular activity, we are still confronted with the marvel that a few tenths per cent, of carbon is the main factor in determining the properties of steel. We are therefore still repeating the question, How does the carbon act? which was raised by Bergman at the end of the eighteenth century.
Page 330 - itself upon the gelatin plate. Brooks's comet of 1893, in one of its photographs taken with the Willard lens at Lick Observatory, showed its tail as if beating against a resisting medium, and sharply bent at right angles near the end, as if at that point it encountered a stronger current of resistance. Many
Page 370 - the advantage won by the mind in the obtaining of a language. Its confused impressions are thus reduced to order, brought under the distinct review of consciousness, and within reach of reflection ; an apparatus is provided with which it can work like