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The EF50, the Tube that helped to Win the War
The EF50, the Tube that helped to Win the War
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Old 11th May 2011, 03:23 PM   #1
Edmond Stuart is offline Edmond Stuart  Netherlands
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Default The EF50, the Tube that helped to Win the War

For those interested in history, here's a most interesting and fascinating website: The EF50, the tube that helped to win the War
Some 50 years ago, I already heard about it vaguely. By that time I considered the story as family gossip. Now it appears to be true.

Cheers,
E.

edit: 40 -> 50 years
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Last edited by Edmond Stuart; 11th May 2011 at 03:38 PM.
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Old 23rd May 2011, 05:31 AM   #2
devilsindetails is offline devilsindetails  Canada
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Very interesting Edmond. Thks for posting! Leo
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Old 23rd May 2011, 06:48 AM   #3
Edmond Stuart is offline Edmond Stuart  Netherlands
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To me it is even more interesting as the one who told me first about it (50 years ago) was .... my mother!

Cheers,
E.
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Old 23rd May 2011, 07:55 AM   #4
picowallspeaker is offline picowallspeaker  Italy
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Now you can see that heater filament in transparency ,trough a banknote ...
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