• Creator
  • Roentgen, Wilhelm, 1845-1923
  • Created Date
  • 8-19-02
  • Description
  • A long glass tube with a large spherical center. At one end of the tube is an anode and at the other end is a cathode. X-rays are highly penetrating invisible forms of electromagnetic radiation on the spectrum between ultraviolet and gamma rays. The energy of x-rays is greater than that of visible light. The most notable characteristics of X-rays are their ability to: ionize gases through which they pass, excite fluorescent materials, and pass... more
    A long glass tube with a large spherical center. At one end of the tube is an anode and at the other end is a cathode. X-rays are highly penetrating invisible forms of electromagnetic radiation on the spectrum between ultraviolet and gamma rays. The energy of x-rays is greater than that of visible light. The most notable characteristics of X-rays are their ability to: ionize gases through which they pass, excite fluorescent materials, and pass through numerous solids. X-rays are also recognized for their effect on photographic emulsion. This X-ray tube was produced in 1899. X-rays are produced in a vacuum tube in which the heated cathode discharges electrons that strike an anode made of copper or tungsten. The collision of the electrons with the anode produces X-rays. The type of X-rays emitted from the tube depends on both the temperature of the cathode and the material of the anode. These tubes could be used with an electricity-generating source such as a static machine, a Tesla Coil, or a small induction coil. Wilhelm Roentgen (1845-1923) accidentally discovered X-ray radiation in 1895. He was unable to discover the nature of this radiation and, therefore, called this phenomenon 'X-rays'. Roentgen won the Nobel Prize for Physics in 1901 for this discovery. How we learn about communities. 16 History; 10-12 Science; 13 Science, Technology and Society. less
  • Format
  • XRAYTUBE.jpg