Recent content by tthomson

  1. T

    How electric circuits really work

    A voltage drop across a circuit provides the potential to do work on electrons in the circuit. In doing the work, the electrons increase their kinetic energy, which is passed to the surrounding atoms in the circuit components, causing them to heat up (Kinetic theory of heat). By inference this...
  2. T

    Insights The Basics of Positron Emission Tomography (PET) - Comments

    I worked on PET scanners for a while, and the typical detectors consist of Bismuth Germinate crystals glued onto photomultiplier tubes. The Bismuth Germinate crystals are transparent, and convert the impinging gamma rays (511KeV) to blue light (Cerenkov), which is detected by the photomultiplier...
Back
Top