Do you know this X-Rays produced by accident?

X-RAY TUBE

Accident:

Do you know this, first x-rays were produced by accident, a by-product emission from gas discharge tubes. Unknowingly high voltage applied between anode and cathode of the tube accelerates the ionized atoms of the gas into the metal cathode. This releases high energy electrons and when these electrons hit the glass of the tube,x-Rays are emitted.

X-Rays emission process:

X-Ray tubes are the same physical processes but here cathode is especially made for parallel beam of electrons is emitted through a window. Metal target produces both continuum of X-rays and a line spectrum.

William Coolidge:

William Coolidge inventor and physicist working for general electric. He worked on the properties of ductile tungsten and he was also interested on x-rays. He decided to try using tungsten as the target anode of the discharge tube. It named Coolidge tube.

Coolidge tube:

Coolidge tube was gas free and had a high temperature tungsten cathode (tungsten melts at 3410 degree C).These new tube produced an intense, stable and controllable beam of X-rays. William Coolidge was patented for this x-rays emission tubes supply to various fields.

Source of article:

1001 INVENTIONS THAT CHANGED THE WORLD-Preface by Trevor Baylis and General

Editor Jack Challoner..

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