Who was the inventor of teh light bulb?
408875
THomas Edison invented the light bulb.
88246
If u meant what solution would conduct electricity then any salt solution would do  the trick. If you meant what solution would produce electricity to light a bulb then you need to prepare a dilute solution of sulphuric acid ( be careful! wear gloves! Wear goggles! If you are a kid, do it under supervision of an adult..that means your parents or teacher :-) ) In the acid solution suspend two plates of dis-similar metals ( say zinc and copper) and connect the plates to the bulb( a flash light bulb, 1.5 V) using copper wires..and see it glow.\n\nThere are other ways and more elegant styles..however this is the simplest.
112950
That light bulb was good enough for my father, and my father's father before him.  I don't see why you want me to change it now!
28143
I heard it said that Thomas Edison said, after failing 10,000 time to successfully invent the light bult, "I have discovered 10,000 ways this will not work."\n\nMy point is this.  You'll come out wiser, or foolish for having missed the opportunity.
137747
Max Karl Ernst Ludwig Planck (April 23, 1858 – October 4, 1947) was one of the most important German physicists of the late 19th and early 20th century; he is considered to be the inventor of quantum theory.
1073127
A lightbulb is a very cheap effective producer of heat!  Use something like a 15 to 25 watt bulb and make sure it holds the temperature steady at the correct level so you don't fry your eggs or they don't get cold.\n\nBTW a 100W lightbulb gives off 2% of the energy in light and guess what the other 98 watts are?  HEAT!
469329
I don't think so, c below:-\n\nnvention:   flashlight in 1902   \nDefinition:  noun / flash·light, flashlight, flash-light\nFunction:  a small portable battery-powered electric lamp, typically flashlight consists of a small electric light bulb with associated parabolic reflector, powered by electric batteries, and with an electric power switch\nPatent:  737,107 (US) issued August 26, 1903\nInventor:  Conrad Hubert (aka Akiba Horowitz)   \nCriteria:  First practical. Modern prototype. Entrepreneur.\nBirth:  April 15, 1856 in Minsk, Russia\nDeath:  1928\nNationality:  American (of Russian decent)\n Akiba Horowitz born on April 15, 1856 in Minsk, Russia came to the United States in 1891 and changed his name to Conrad Hubert. He was flat broke. He did what he could to earn a living.  He worked in a cigar store, ran a restaurant for a while and managed a boarding house. He even tried repairing watches. Whatever he did, however, he never made much money. All he wanted was to stop worrying about making ends meet.
727894
invented by Thomas Edison in 1879\n\nheres 833,000 sources
871541
No \nBut he used to sell lightbulbs LOL\nheres the link\nhttp://www.imdb.com/name/nm0004874/bio
666483
Nikola Tesla.\n\nBecause he thought it wouldn't cause lights to flicker for anyone.
603423
Electric light is produced by running an electric current through a resistor that then glows white-hot.  Edison searched through thousands of different materials to find one that glows just right.\n\nToday most regular light bulbs use a tungsten filament (a little wire made of the material 'tungsten') which gives off a lot of light but it is relatively breakable.\n\nWhen a bulb 'burns out' it means that this little filament has burned up or broken.  It is more likely to break when it is turned on.  Technically I suppose you could get more life out of a bulb by leaving it on all the time but that would be a waste of energy and you don't want light all the time.\n\nThese days there are other materials and other ways to make light bulbs that last a lot longer but they are not in common usage yet.
936314
The invention of the incandescent light bulb has a history spanning from the early 1800s. Until that time, available light sources consisted of candles, oil lanterns, and gas lamps. \n\nIn 1809, an English chemist, Humphrey Davy, started the journey to the invention of a practical incandescent light source. He used a high power battery to induce current between two charcoal strips. The current flowing through the two charcoal strips produced an intense incandescent light, creating the first arc lamp. \n\nIn 1820, Warren De la Rue made the first known attempt to produce an incandescent light bulb. He enclosed a platinum coil in an evacuated tube and passed an electric current through it. The design was based on the concept that the high melting point of platinum would allow it to operate at high temperatures and that the evacuated chamber would contain less gas particles to react with the platinum, improving its longevity. Although it was an efficient design, the cost of the platinum made it impractical for commercial use.\n\nThe invention of the light bulb is usually attributed in Britain to Joseph Wilson Swan and in the United States to Thomas Alva Edison(and his asstant Timothy) (the first to market the device successfully). Alexander Nikolayevich Lodygin independently developed an incandescent light bulb in 1874. Many others also had a hand in the development of a practical device for the production of electric light.
516877
The incandescent light bulb or incandescent lamp is a source of artificial light that works by incandescence, in which an electric current passes through a thin filament, heating it and causing it to emit light. The "bulb" is the glass enclosure around the filament that often contains a vacuum or is filled with a low-pressure noble gas to prevent the filament from burning out due to evaporation at the high temperature.\n\nIncandescent bulbs used to be known as electric lamps, extending the use of a term applied to the original arc "lamps", and in Australia and South Africa they are also called light globes. Because of their relatively poor energy efficiency and yellowish color, incandescent light bulbs are gradually being replaced in many applications by fluorescent lights, high-intensity discharge lamps, LEDs, and other devices.
182180
make lemons power a light bulb.
251697
The Invention of the Light Bulb: Davy, Swan and Edison\n\nThe first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This is called an electric arc. \nMuch later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England. \n\nIn 1877, the American Charles Francis Brush manufactured some carbon arcs to light a public square in Cleveland, Ohio, USA. These arcs were used on a few streets, in a few large office buildings, and even some stores. Electric lights were only used by a few people. \n\nThe inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.
367230
The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This is called an electric arc.\n\nMuch later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England.\n\nIn 1877, the American Charles Francis Brush manufactured some carbon arcs to light a public square in Cleveland, Ohio, USA. These arcs were used on a few streets, in a few large office buildings, and even some stores. Electric lights were only used by a few people.\n\nThe inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.\n\nLewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.\n\nIn 1903, Willis R. Whitney invented a treatment for the filament so that it wouldn't darken the inside of the bulb as it glowed. In 1910, William David Coolidge (1873-1975) invented a tungsten filament which lasted even longer than the older filaments. The incandescent bulb revolutionized the world.
397092
Augustine Fresnel invented the Fresnel lens. (used in lighthouse)\n\nspotlight or searchlight, In 1892 such apparatus was used along the English Channel ( I was thinking it goes back to the ancient Greeks)\n...\nIn 1916 Edison invented a portable electric apparatus powered by storage batteries. ... The electric arc was generally employed after the American inventor E. A. Sperry introduced (1915) his high-intensity arc lamp based on principles that still predominate in modern searchlight equipment.