Mindblown: a blog about philosophy.

  • Alnico

    An alloy primarily composed of aluminum, nickel, and cobalt, known for its exceptional retentivity. This alloy is extensively utilized in the production of permanent magnets, which are essential for generating robust magnetic fields.  

  • Air-wall ionization chamber

    In the context of x-ray and gamma radiation, an “air equivalent” chamber refers to a specialized device wherein the materials composing the chamber walls and electrodes are made of substances that closely resemble those found in a standard free air ionization chamber. This design ensures that the chamber accurately simulates the behavior and response of…

  • Air gap technique

    An imaging method employed to mitigate the effects of secondary and scattered radiation involves positioning the patient approximately six inches away from the x-ray film during the exposure. This six-inch separation between the patient and the film serves as an effective radiation filter, effectively reducing unwanted radiation interference.  

  • Air core transformer

    The most elementary form of a transformer comprises a pair of extensively insulated wire coils positioned in parallel to one another.  

  • Adrian-crooks type cassette

    The cassette comprises a copper step wedge, an intensifying screen, and a light absorber. The copper step wedge provides a specific penetration value, while the intensifying screen, which is not shielded by the step wedge, allows light to pass through the light absorber before reaching the film. This process reduces the exposure. The penetration through…

  • Added filter

    Typically, when we mention the inclusion of 2mm aluminum in the inherent filter of a diagnostic beam, it is primarily done to eliminate soft rays that lack the penetrating characteristics.  

  • Actual focal spot

    The region of the target which consistently exceeds the effective focal size. It corresponds to the section of the anode where the electrons make impact.  

  • Active trace

    The specific component of the television scanning system actively employed to replicate the subject matter.  

  • Intensifying screen active layer

    The slender and sleek protective layer of intensifying screens, characterized by its resistance to abrasion. Its primary purpose is to create a moisture-resistant seal, effectively safeguarding the screen from warping.  

  • Acetic acid power supply

    A power source that delivers one or more alternating current (AC) output voltages, similar to an acetic acid generator or transformer. This particular category of power supply serves as the energy provider for the primary switch within the x-ray circuit.  

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