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#11
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"The Wright Brothers did not invent the airplane!"
Mary Pegg wrote: Michael Walsh wrote: A lot of this depends on whether you want to credit the invention to the first person who tried to produce something or the person who made it a success. Edison invented the first successful light bulb by providing a longer lasting filament that he discovered through a lot of exhaustive testing of possibilities. Did you read that page? "1878 - Sir Joseph Wilson Swan (1828-1914), an English physicist, was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours)." The following year Edison produced a bulb with a 40 hour life. Well, 40 hours is significantly longer than 13.5 hours and Edison was the one who was successful commercially. No, I didn't read that page. Over the years, filaments have been improved greatly. I regard this as more of a clarification of what I said than a contradiction. Mike Walsh |
#12
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"The Wright Brothers did not invent the airplane!"
Michael Walsh wrote:
Mary Pegg wrote: Did you read that page? "1878 - Sir Joseph Wilson Swan (1828-1914), an English physicist, was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours)." The following year Edison produced a bulb with a 40 hour life. Well, 40 hours is significantly longer than 13.5 hours and Edison was the one who was successful commercially. No, I didn't read that page. Over the years, filaments have been improved greatly. I regard this as more of a clarification of what I said than a contradiction. You're free to regard it any way you wish, but if you'd perhaps read that page instead of quibbling, you'd see that Edison's improvements were just one more step in the process of developing viable lightbulbs. I do not view a factor of three as "significant": I imagine that in the ten months between Swan's demonstration of 13.5 hours and Edison's demonstration of 40 hours, Swan himself had probably managed the same improvement. Swan's bulb was the first practical bulb; Edison's was a development of an 1875 patent purchased from inventors, Henry Woodward and Matthew Evans. Edison lost in the British courts for infringement of Swan's patent. The U.S. Patent Office ruled on October 8, 1883 that Edison's patents were based on the prior art of a man named William Sawyer and were invalid. Edison did not invent the lightbulb. More info he http://www.lightfan.co.uk/lightinf04.htm |
#13
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"The Wright Brothers did not invent the airplane!"
I was reading in the bathroom when I ran across an item written by
Mary Pegg on Mon, 06 Oct 2003 17:27:06 +0100, which said: Edison did not invent the lightbulb. And Newton was an alchemist. So what? ------------- Beady's 11th Law of Social Harmonics: "Your spouse is precisely the kind of person someone like you would choose to marry." |
#14
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"The Wright Brothers did not invent the airplane!"
From John Beaderstadt:
Mary Pegg on Mon, 06 Oct 2003 Edison did not invent the lightbulb. And Newton was an alchemist. So what? I've enjoyed Mary's very informative contributions here. ~ CT |
#15
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"The Wright Brothers did not invent the airplane!"
Julian Bordas wrote
[...] They are also mis credited with being the first to have made a powered flight. They are not They did, however, meet the X-Prize criteria, by doing several flights that day and the next. /dps |
#16
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"The Wright Brothers did not invent the airplane!"
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