Cathode Rays

The 100th anniversary of the cathode ray tube.

This is the first of three posts describing a now-(nearly)-obsolete technology.

Thomas Edison nearly discovered them.  In his experiments with heated filaments in evacuated glass bulbs trying to find a suitable incandescent lamp, there were hints.  He noticed depositions of material on the walls of the glass tubes.  Many scientific discoveries are preceded not by the expression “Eureka”, but instead by the comment: “Hmm, that’s funny”.  If he had followed up on this odd result, he might have also invented the vacuum tube amplifier.

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Career’s End

From my gun collection: an electron gun, extracted from a cathode ray tube

After years of fearing the consequences of corporate RIFs (“reduction in force”), aka layoffs, and having survived a dozen or more of them, I had finally reached the point where losing my job would have a lesser consequence.  I had built up my savings in anticipation of some future retirement and was now working for the sheer pleasure of it.  

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