Site display: Normal | Text Only

My Collection | About Us | Teachers

Find objects

Select from more than one or two options below:

Objects search

Can't find what you're looking for? Try the search below.

Jackson type X-ray tube, United Kingdom, 1896

  • Thumbnail1
  • Thumbnail2
  • Thumbnail3
  • Thumbnail4
  • Thumbnail5

Click the thumbnails to enlarge

X-rays were discovered by Wilhelm Röntgen in November 1895. This is a very early example of an X-ray tube. It was developed in 1896 by Henry Jackson (1863-1936). The Jackson X-ray tube features a cup-shaped cathode. This focuses the cathode rays onto the platinum anode target. When the cathode rays hit the anode, their energy changed into invisible X-rays. These X-rays passed out through the glass. The Jackson tube is also known as a Focus Tube. It is important in the evolution of X-ray tubes.

Object number:



Related links


    Techniques and Technologies:


    Glossary: x-ray tube

    The part of an X-ray machine that produces X-rays. The tube itself operates under vacuum conditions.

    Glossary: x-rays

    A wave of electromagnetic radiation that has high energy and short wavelength. It is able to pass through many materials, except those of high density such as metals or bones. Discovered in 1895 by William Roentgen.