[DOC] [TLE] Jeopary Questions page 725 - "MY" OH, MY! - TriviaBistro.com [PAR] 1870s AMERICA: In October 1879 he discovered that a thread of carbonized 
cotton will burn for 13 hours in a vacuum  "D" TIME: This word meaning "to make
... [DOC] [TLE] The UnMuseum - Who Invented the Lightbulb? [PAR] Edison's incandescent lamp lit the world, but did he really invent it? ... a patent in 
1845 for a bulb using vacuum in conjunction with a carbon burner. ... By October 
of 1879 Edison's workers began to see some results. On the 22nd of that month a 
thin, cotton "carbonized" thread burned for some 13 hours during an experiment. [DOC] [TLE] A Big Bonanza: Edison's Electric Lighting System - Thomas A ... [PAR] Edison briefly experimented with electric lighting in 1877 but he did not begin to 
focus .... in early October led to the development of better and better vacuum 
pumps. .... After the lamp had been left burning for 13 1/2 hours, they added 
enough ... We have had a fine burner made of a piece of carbonized thread 
which gave a... [DOC] [TLE] Light Bulb History - Invention of the Light Bulb - The Great Idea Finder [PAR] Jan 30, 2007 ... light bulb by Thomas Alva Edison in 1879. ... Death: October 18, 1931 in West 
Orange, New Jersey ... a UK patent for an improved incandescent lamp in a 
vacuum tube .... Edison decided to try a carbonized cotton thread filament. ... that 
could last for 1500 hours and he began to market his new invention. [DOC] [TLE] Incandescent light bulb - Wikipedia [PAR] An incandescent light bulb, incandescent lamp or incandescent light globe is an 
electric light .... He devised a method of treating cotton to produce 'parchmentised 
thread' in the ... that a carbonized bamboo filament could last more than 1200 
hours. ... Eventually on 6 October 1889, a judge ruled that Edison's electric light... [DOC] [TLE] The Electric Light System - Thomas Edison National Historical Park ... [PAR] These bulbs burned out after a few minutes. ... He and his "muckers" also had to 
invent hundreds of other parts to make the light ... In the fall of 1879, the muckers 
tested a small cotton thread as a filament. ... carefully forced the air out with a 
special vacuum pump and sealed the bulb. ... The bulb burned at least 13 hours. [DOC] [TLE] Oct. 21, 1879: Edison Gets the Bright Light Right | WIRED [PAR] Oct 21, 2009 ... A brief project takes many months, but the results last many hours, so the ... 14 
months of testing with an incandescent electric light bulb that lasts 13 hours. ... 
The vacuum bulbs Edison had created for platinum were ideal for carbon. ... they 
baked a piece of coiled cotton thread until it was all carbon. [DOC] [TLE] to begin - Schenectady Museum > Suits-Bueche Planetarium ... [PAR] It consists of a carbonized thread for the filament which was attached to the inner 
... Edison's first commercial light bulbs, which he sold in late 1879 to early 1880 ... 
Notice that the bulb of this lamp does not conform to the typical pear shape of ... 
have burned for only 13  or 14  hours and that the 40-hour Death Watch... [DOC] [TLE] An Incandescence of Invention  Edison's Electric Light | A Niche ... [PAR] Jan 12, 2011 ... The book can be found here. ... He has a vision of how to build a durable 
incandescent bulb by regulating the current to keep ... Oct 1879  A long-lived 
bulb is made with a high-resistance piece of carbonized cotton thread in a high 
vacuum. ... Edison dunks a bulb underwater to show that it keeps burning. [DOC] [TLE] Energy Efficiency Solutions and Reviews The History of the Light ... [PAR] Mar 13, 2015 ... By October 1879, Edison's team had produced a light bulb with a carbonized 
filament of uncoated cotton thread that could last for 14.5 hours. ... is that he didn't 
stop with improving the bulb  he developed a whole suite of .... in the 1990s 
quickly led to the

Question: In October 1879 he discovered that a thread of carbonized cotton will burn for 13 hours in a vacuum
Answer: Thomas Edison