vacuum tube 3

nXvbOLQ
osmar01
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vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated
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vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated

February 13, 2016 wernerb

A journey into the past- the beginning of future... ;-) Thank's for sharing!

osmar01
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Image properties
Dimensions: 4324px * 3089px
Published: February - 15 - 2013
Camera: Nikon D7000
Date: 2012:01:28 21:08:35
Aperture:f/6
Exposure: 1/25s
Focal length: 35mm
ISO: 100
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vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated vacuum tube 3: All modern vacuum tubes are based on the concept of the Audion--a heated "cathode" boils off electrons into a vacuum; they pass through a grid (or many grids), which control the electron current; the electrons then strike the anode (plate) and are absorbe 300px //m.rgbimg.com/users/o/os/osmar01/600/nXvbOLQ.jpg 600px //m.rgbimg.com/users/o/os/osmar01/600/nXvbOLQ.jpg 100px