Quantum Quantum In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a physical property may be "quantized" is referred to as "the hypothesis of quantization". This means that the magnitude of the physical property can take on only discrete values consisting of integer multiples of one quantum. For example, a photon is a single quantum of light (or of any other form of electromagnetic radiation). Similarly, the energy of an electron bound within an atom is quantized and can exist only in certain discrete values. (Indeed,
Australasian College of Physical Scientists and Engineers in Medicine Australasian College of Physical Scientists and Engineers in Medicine The Australasian College of Physical Scientists and Engineers in Medicine (ACPSEM) is a professional organisation for medical physicists, biomedical engineers and allied professionals in Australia and New Zealand. The ACPSEM was first incorporated in 1977 as the Australasian College of Physical Scientists in Medicine. The college was formed from the earlier Australian Regional Group of the Hospital Physicists Association (UK), Biophysics Group of the Australian Institute of Physics and New Zealand Medical Physics and Biomedical Engineering Association. The college was admitted to membership of the International Organization for Medical Physics in