An x-ray tube is a simple device; a cathode emits electrons that strike a tungsten anode that emits x-rays. Most x-ray tubes, though, are relatively large with low-power mammography tubes being a ...

Between his 1874 discovery and his invention of cathode-ray tube in 1897, Braun moved from strength to strength in his teaching career. Having started out as a teacher at a Gymnasium (school ...

Others thought the rays were streams of particles. J.J. Thomson decided to find out for sure. Thomson was a physics professor at Cambridge University in the UK. He placed cathode tubes in electric ...

Röntgen was originally trying to find out whether cathode light rays - invisible streams of electrons, that could only be seen in glass vacuum tubes - could ... of the x-ray we know today.

Armed with a cheap high voltage DC power supply he acquired from an online auction house, he started to power up his x-ray vacuum tube. A smaller power supply energizes the cathode and forms an ...