[sdiy] Happy 100th To The Vacuum Tube

[Oren Leavitt]

I think Goerges Claude made the first neon lamp around 1902.
Geissler tubes (no neon, just low pressure air) date back to the mid 
19th century.

Interestingly, Edison had discovered thermionic emission back in 1880 
while perfecting the light bulb. It was then known as the "Edison 
Effect". It wasn't until many years later that this would be found to be 
useful.

A Google on "Edison Effect" brings up some interesting stuff:

http://en.wikipedia.org/wiki/Edison_Effect
http://www.ieee-virtual-museum.org/collection/tech.php?id=2345876&lid=1

BTW: Happy 125th to Edison's first practical light bulb - Oct 21, 1879!

This light bulb has been burning for the past 100+ years!
http://www.centennialbulb.org




Paddock, Toby wrote:
> Happy birthday tubes! I'd like to be as healthy 
> when I turn 100.
> 
> Anyone know how old neon glow lamps are? I haven't been 
> able to find a date. I've been saying neon blinkys 
> are 100 year old technology, but am I lying?
> 
> Later,
> Toby
> 
> Scott Gravenhorst wrote:
> 
>>From http://slashdot.org
>>
>>"Science: Happy 100th To The Vacuum Tube
>>Technology
> 
> 
>