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Read Ebook: The motion picture comrades aboard a submarine or Searching for treasure under the sea by Barnes Elmer Tracey
Font size: Background color: Text color: Add to tbrJar First Page Next PageEbook has 811 lines and 44072 words, and 17 pagesI LIGHT AND PROGRESS 3 II THE ART OF MAKING FIRE 15 V OIL-LAMPS OF THE NINETEENTH CENTURY 51 VI EARLY GAS-LIGHTING 63 X THE ELECTRIC INCANDESCENT FILAMENT LAMPS 127 XX LIGHT AND HEALTH 269 READING REFERENCES 357 INDEX 359 Crude splinter-holders 16 Early open-flame oil and grease lamps 17 A typical metal multiple-wick open-flame oil-lamp 32 A group of oil-lamps of two centuries ago 33 Lamps of a century or two ago 56 Elaborate fixtures of the age of candles 57 Flame arc 128 Direct current arc 128 On the testing-racks of the manufacturer of incandescent filament lamps 129 Carbon-dioxide tube for accurate color-matching 160 The Moore nitrogen tube 160 Modern street lighting 161 A completed lighthouse lens 176 Torro Point Lighthouse, Panama Canal 176 American search-light position on Western Front in 1919 177 American standard field search-light and power unit 177 Signal-light for airplane 232 Trench light-signaling outfit 232 Aviation field light-signal projector 232 Signal search-light for airplane 232 Unsafe, unproductive lighting worthy of the dark ages 233 The same factory made safe, cheerful, and more productive by modern lighting 233 Locomotive electric headlight 240 Search-light on a fire-boat 240 Building ships under artificial light at Hog Island Shipyard 241 Artificial light in photography 256 Sterilizing water with radiant energy from quartz mercury-arcs 257 Judging color under artificial daylight 272 Artificial daylight 273 Fireworks and illuminated battle-fleet at Hudson-Fulton Celebration 288 Fireworks exhibition on May Day at Panama-Pacific Exposition 289 The new flood lighting contrasted with the old outline lighting 304 Niagara Falls flooded with light 305 Artificial light honoring those who fell and those who returned 320 The expressiveness of light in churches 321 Obtaining two different moods in a room by a portable lamp which supplies direct and indirect components of light 336 The lights of New York City 337 Artificial light in community affairs 352 Panama-Pacific Exposition 353 ARTIFICIAL LIGHT LIGHT AND PROGRESS The human race was born in slavery, totally subservient to nature. The earliest primitive beings feasted or starved according to nature's bounty and sweltered or shivered according to the weather. When night fell they sought shelter with animal instinct, for not only were activities almost completely curtailed by darkness but beyond its screen lurked many dangers. It is interesting to philosophize upon a distinction between a human being and the animal just below him in the scale, but it may serve the present purpose to distinguish the human being as that animal in whom there is an unquenchable and insatiable desire for independence. The effort to escape from the bondage of nature is not solely a human instinct; animals burrow or build retreats through the instinct of self-preservation. But this instinct in animals is soon satisfied, whereas in human beings it has been leading ever onward toward complete emancipation. O first created beam and thou great Word "Let there be light," and light was over all, Why am I thus bereaved thy prime decree? Add to tbrJar First Page Next Page |
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