In a message dated 4/8/2007 8:52:06 AM Eastern Daylight Time, [email protected] writes:
> He was able to remote-control a miniature submarine in the early 1890's, > invented the fluorescent light tube, > ========= Did Tesla get a patent for his fluorescent tube? And what year did he invent it? Allen <BR><BR>**************************************<BR> See what's free at http://www.aol.com.</HTML> From [email protected] Sun Apr 8 10:31:50 2007 From: [email protected] ([email protected]) Date: Sun Apr 8 10:34:16 2007 Subject: [Phono-L] Edison History Question References: <[email protected]> Message-ID: <000801c77a03$cac50ab0$6101a...@wilenzick> I don't think Tesla was the inventor of the fluorescent light tube. That invention is usually credited to Peter Cooper Hewitt, who invented the mercury vapor lamp in 1901 with patent # 889,692. The modern fluorescent lamp was invented by Edmund Germer, Friedrich Meyer, and Hans Spanner in 1927 with patent #2,182,732. However, the first practical fluorescent lamp was sold by GE in 1938 from designs patented by George Inman, and Richard Thayer in 1938 (#2,259,040). It is true that physicists in the19th century, such as Alexandre Becquerel, did experiments with fluorescence and phosphorescence, and possibly Tesla did similar experiments. Even our friend, Edison, filed a patent (#865,367) in 1896 for a fluorescence lamp, but his used x-rays to produce the light!! Ray ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Sunday, April 08, 2007 12:24 PM Subject: Re: [Phono-L] Edison History Question > In a message dated 4/8/2007 8:52:06 AM Eastern Daylight Time, > [email protected] writes: > >> He was able to remote-control a miniature submarine in the early 1890's, >> invented the fluorescent light tube, >> > ========= > Did Tesla get a patent for his fluorescent tube? And what year did he > invent > it? > > Allen > <BR><BR>**************************************<BR> See what's free at > http://www.aol.com.</HTML> > _______________________________________________ > Phono-L mailing list > http://phono-l.oldcrank.org >
