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  2. Apex beat - Wikipedia

    en.wikipedia.org/wiki/Apex_beat

    Apex beat. The apex beat (lat. ictus cordis ), also called the apical impulse, [1] is the pulse felt at the point of maximum impulse ( PMI ), which is the point on the precordium farthest outwards (laterally) and downwards (inferiorly) from the sternum at which the cardiac impulse can be felt. The cardiac impulse is the vibration resulting from ...

  3. Point spread function - Wikipedia

    en.wikipedia.org/wiki/Point_spread_function

    The point spread function ( PSF) describes the response of a focused optical imaging system to a point source or point object. A more general term for the PSF is the system's impulse response; the PSF is the impulse response or impulse response function (IRF) of a focused optical imaging system. The PSF in many contexts can be thought of as the ...

  4. Apical Pulse: Definition, Location, and More - Healthline

    www.healthline.com/health/apical-pulse

    Overview. Your pulse is the vibration of blood as your heart pumps it through your arteries. You can feel your pulse by placing your fingers over a large artery that lies close to your skin. The ...

  5. Chebyshev filter - Wikipedia

    en.wikipedia.org/wiki/Chebyshev_filter

    Type I Chebyshev filters are the most common types of Chebyshev filters. The gain (or amplitude) response, , as a function of angular frequency of the th-order low-pass filter is equal to the absolute value of the transfer function evaluated at : where is the ripple factor, is the cutoff frequency and is a Chebyshev polynomial of the th order.

  6. How to Check Heart Rate: 5 Methods and What Is Normal

    www.healthline.com/health/how-to-check-heart-rate

    To calculate your estimated maximum heart rate, you can use the equation of subtracting your age from 220. For example, if you’re 45, then your approximate maximum heart rate is 175 bpm (220 ...

  7. Center of percussion - Wikipedia

    en.wikipedia.org/wiki/Center_of_percussion

    The center of percussion is the point on an extended massive object attached to a pivot where a perpendicular impact will produce no reactive shock at the pivot. Translational and rotational motions cancel at the pivot when an impulsive blow is struck at the center of percussion. The center of percussion is often discussed in the context of a ...

  8. Pole–zero plot - Wikipedia

    en.wikipedia.org/wiki/Pole–zero_plot

    A pole-zero plot is plotted in the plane of a complex frequency domain, which can represent either a continuous-time or a discrete-time system: Continuous-time systems use the Laplace transform and are plotted in the s-plane: s = σ + j ω {\displaystyle s=\sigma +j\omega } Real frequency components are along its vertical axis (the imaginary line.

  9. Max q - Wikipedia

    en.wikipedia.org/wiki/Max_q

    q. The max q, or maximum dynamic pressure, condition is the point when an aerospace vehicle's atmospheric flight reaches the maximum difference between the fluid dynamics total pressure and the ambient static pressure. For an airplane, this occurs at the maximum speed at minimum altitude corner of the flight envelope.