-
Period: to
Creation and Evolution of the Lightbulb
-
First Electric Lamp
Sir Humphry Davy created the first electric lamp by connecting two wires to a battery and attached a charcoal strip betwween the other ends of the wires. The charcoal glowed making the first lamp. -
Warren De la Rue
Warren De la Rue enclosed a platinum coil in a vacuumed bulb and passed an electric current through it. His lamp was worked but the cost of the platinum was too high. -
First Bulb
James Bowman Lindsay was the first person to contain a electical current in side a gas bulb. -
Thomas Edison
Thomas Alva Edison invented carbon filament that burned for forty hours. Edison placed this filament in a vacuumed bulb. -
Wireless Electrical Lamp
Nikola Tesla had worked with Thomas Edison before worked on his own. He worked on creating a wireless electrical lamp. Tesla developed and used fluorescent bulbs in his lab some 40 years before industry "invented" them. -
Tungsten filament
Tungsten filaments replace carbon filaments. The wire filiment is heated to a high temperature by an electric current passing through it until it glows. The filament is protected from oxidation with a glass bulb fill with inert gas. -
Tungsten filamets
The General Electric Company were the first to patent a method of making tungsten filaments for use in incandesent lightbulbs. -
Father of the Fluorescent Lamp
Edmund Germer created a mercury vapor lamp; fluoresent lamp. He applied for a patent on December 10, 1926, which led it to be purchased by the General Electric Company -
First Light Emitting Diode
Nick Holonyak Jr. develops the first visable practical light-emitting diode. LEDs use a semi-conductor to convert electristy in to light. -
Organic Light Emitting Diode
In 1979-1987 Ching Tang discovers he can creat light by sending current through a carbon material.
Steven Van Slyke and Tang built the first OLED kodak in 1987 it was a bright green light at ten volts. -
Fluorescent Energy Saving Lamp
Philips sells their first Compact Fluorescent Energy Saving Lamps. The principle of operation in a CFL bulb remains the same as in other fluorescent lighting, electrons that are bound to carry mercury atoms are excited to states where they will radiate UV light as that turn to a lower energy level. Theses bulbs are energy saving and are just as bright as incandescent lamps. -
Sulfur Lamp
First commercial sulfur lamp. The light is generated by sulfur plasma, -
Wireless light globe
Scientists light a 60 watt light bulb froma power source 7 feet away with their new technique, no phyiscal connection between the source and the light. The researches dubedheir concept "WiTricity", as in Wireless Electricity. -
Residential LEDs
First residentials LEDs go on the market. There were just a few LED bulbs on the market that could serve as a replacement incandescents and most were 25-40 watts equivalents. -
LED Tubes
The technology today has replaced the standed Fluorescent tubes with LED filled tubes. A 17 W tube of LEDs which has the same intensity as a 45 W fluorescent tube.
