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  2. Response spectrum - Wikipedia

    en.wikipedia.org/wiki/Response_spectrum

    A series of mixed vertical oscillators A plot of the peak acceleration for the mixed vertical oscillators. A response spectrum is a plot of the peak or steady-state response (displacement, velocity or acceleration) of a series of oscillators of varying natural frequency, that are forced into motion by the same base vibration or shock.

  3. Shock response spectrum - Wikipedia

    en.wikipedia.org/wiki/Shock_response_spectrum

    A Shock Response Spectrum (SRS) [1] is a graphical representation of a shock, or any other transient acceleration input, in terms of how a Single Degree Of Freedom (SDOF) system (like a mass on a spring) would respond to that input. The horizontal axis shows the natural frequency of a hypothetical SDOF, and the vertical axis shows the peak ...

  4. Long period ground motion - Wikipedia

    en.wikipedia.org/wiki/Long_period_ground_motion

    In order to classify the intensity, the JMA looks at the maximum value of the absolute velocity response spectrum (Sva) with a damping constant of 5% over a period range from 1.6 to 7.8 seconds with calculation increments of 0.2 second. This then converts to the following classes:

  5. Peak ground acceleration - Wikipedia

    en.wikipedia.org/wiki/Peak_ground_acceleration

    PGA records the acceleration (rate of change of speed) of these movements, while peak ground velocity is the greatest speed (rate of movement) reached by the ground, and peak displacement is the distance moved. [7] [8] These values vary in different earthquakes, and in differing sites within one earthquake event, depending on a number of ...

  6. Campbell diagram - Wikipedia

    en.wikipedia.org/wiki/Campbell_diagram

    A Campbell diagram plot represents a system's response spectrum as a function of its oscillation regime. It is named for Wilfred Campbell, who introduced the concept. It is named for Wilfred Campbell, who introduced the concept.

  7. Pseudorapidity - Wikipedia

    en.wikipedia.org/wiki/Pseudorapidity

    A boost of velocity along the beam-axis of velocity corresponds to an additive change in rapidity of using the relation = ⁡. Under such a Lorentz transformation , the rapidity of a particle will become y ′ = y + y boost {\\displaystyle y'=y+y_{\\text{boost}}} and the four-momentum becomes

  8. Trump shakes hands with Pence, engages Obama at Carter funeral

    www.aol.com/news/trump-shakes-hands-pence...

    Trump and Obama spoke continuously ahead of the funeral service, with Obama nodding seriously in response to Trump before breaking into a grin. Former first lady Michelle Obama did not attend the ...

  9. Pseudovector - Wikipedia

    en.wikipedia.org/wiki/Pseudovector

    Physical examples of pseudovectors include torque, [4] angular velocity, angular momentum, [4] magnetic field, [4] vorticity and magnetic dipole moment.. Each wheel of the car on the left driving away from an observer has an angular momentum pseudovector pointing left.