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  2. Glossary of physics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_physics

    A branch of physics that studies atoms as isolated systems of electrons and an atomic nucleus. Compare nuclear physics. atomic structure atomic weight (A) The sum total of protons (or electrons) and neutrons within an atom. audio frequency A periodic vibration whose frequency is in the band audible to the average human, the human hearing range.

  3. List of common physics notations - Wikipedia

    en.wikipedia.org/wiki/List_of_common_physics...

    amplitude: meter: atomic mass number: unitless acceleration: meter per second squared (m/s 2) magnetic flux density also called the magnetic field density or magnetic induction tesla (T), or equivalently, weber per square meter (Wb/m 2) capacitance: farad (F) heat capacity

  4. Amplitude - Wikipedia

    en.wikipedia.org/wiki/Amplitude

    Peak-to-peak amplitude (abbreviated p–p or PtP or PtoP) is the change between peak (highest amplitude value) and trough (lowest amplitude value, which can be negative). With appropriate circuitry, peak-to-peak amplitudes of electric oscillations can be measured by meters or by viewing the waveform on an oscilloscope .

  5. Envelope (waves) - Wikipedia

    en.wikipedia.org/wiki/Envelope_(waves)

    In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. [1] The envelope thus generalizes the concept of a constant amplitude into an instantaneous amplitude. The figure illustrates a modulated sine wave varying between an upper envelope and a lower envelope. The envelope function may be a ...

  6. Bioelectromagnetic medicine - Wikipedia

    en.wikipedia.org/wiki/Bioelectromagnetic_medicine

    The FDA decides which FDA labels to grant to a medical device. There are three main classes of medical devices according to the potential risk that they might have on human health. Class 1 – Very low-risk devices and drugs. For example, dental floss and bedpans. Class 2 – Devices with a higher risk than Class 1. For example, condoms and ...

  7. List of physics mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_physics_mnemonics

    More Magic Triangle image mnemonics in the style of a cheat-sheet for high-school physics – in the SVG file, hover over a symbol for its meaning and formula. This is a categorized list of physics mnemonics .

  8. Pulse (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Pulse_(signal_processing)

    Examples of pulse shapes: (a) rectangular pulse, (b) cosine squared (raised cosine) pulse, (c) Dirac pulse, (d) sinc pulse, (e) Gaussian pulse A pulse in signal processing is a rapid, transient change in the amplitude of a signal from a baseline value to a higher or lower value, followed by a rapid return to the baseline value.

  9. Thermal amplitude (medical) - Wikipedia

    en.wikipedia.org/wiki/Thermal_amplitude_(medical)

    Thermal amplitude or thermal range refers to the temperature range in which a cold autoantibody or cold-reacting alloantibody binds to its antigen. [ 1 ] [ 2 ] Cold antibodies that can bind to antigen above 30 °C (86 °F) are considered potentially clinically significant and may lead to disease that occurs or worsens on exposure to low ...