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1875 Henry Woodward patents an electric light bulb. 1876 Pavel Yablochkov invents the Yablochkov candle , the first practical carbon arc lamp, for public street lighting in Paris. 1879 (About Christmas time) Col. R. E. Crompton illuminated his home in Porchester Gardens , using a primary battery of Grove Cells, then a generator which was better.
The first commercially successful light bulb filaments were made from carbonized paper or bamboo. Carbon filaments have a negative temperature coefficient of resistance—as they get hotter, their electrical resistance decreases. This made the lamp sensitive to fluctuations in the power supply, since a small increase of voltage would cause the ...
Google Images (previously Google Image Search) is a search engine owned by Google that allows users to search the World Wide Web for images. [1] It was introduced on July 12, 2001, due to a demand for pictures of the green Versace dress of Jennifer Lopez worn in February 2000. [2] [3] [4] In 2011, reverse image search functionality was added.
The pendant light at Fire Station #6 in which the bulb is installed. The Centennial Light was originally a 60-watt bulb, but has since dimmed significantly and is now as bright as a 4-watt bulb. [7] [8] [9] The hand-blown, carbon-filament common light bulb was invented by Adolphe Chaillet, a French engineer who filed a patent for this socket ...
Lite-Brite is a toy that was originally marketed in 1967. It consists of a light box with small colored plastic pegs that fit into a panel and illuminate to create a lit picture, by either using one of the included templates or creating a "freeform" image on a blank sheet of black paper.
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Bing.com – Has an Advanced Image Search that offers images in different resolutions and also categorizes images. Allows free querying of the bing Image Search API up to a certain limit per day. Everystockphoto.com – Searching over 4.3 million public domain and creative commons photos including Wikipedia and NASA. Free user accounts with ...
Many bargain brands have dome-shaped LEDs which focus the light so that it's sharply visible when viewed head-on, but almost invisible from a perpendicular direction. This has both advantages and disadvantages, depending on one's decorating needs. If a small LED bulb size with wider viewing angle is desired, wide-angle LEDs are available.