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  2. Time dilation - Wikipedia

    en.wikipedia.org/wiki/Time_dilation

    From the local frame of reference of the blue clock, the red clock, being in motion, is measured as ticking slower. [9] Special relativity indicates that, for an observer in an inertial frame of reference, a clock that is moving relative to the observer will be measured to tick more slowly than a clock at rest in the observer's frame of ...

  3. Gravitational time dilation - Wikipedia

    en.wikipedia.org/wiki/Gravitational_time_dilation

    is the mass of the object creating the gravitational field, r {\displaystyle r} is the radial coordinate of the observer within the gravitational field (this coordinate is analogous to the classical distance from the center of the object, but is actually a Schwarzschild coordinate; the equation in this form has real solutions for r > r s ...

  4. Here's why astronauts age slower than the rest of us here on ...

    www.aol.com/heres-why-astronauts-age-slower...

    Time appears to move slower near massive objects because the object's gravitational force bends space-time. Technically, that means a watch strapped to your ankle will eventually fall behind one ...

  5. Wagon-wheel effect - Wikipedia

    en.wikipedia.org/wiki/Wagon-wheel_effect

    The effect relies on a motion perception property called beta movement: motion is seen between two objects in different positions in the visual field at different times providing the objects are similar (which is true of spoked wheels—each spoke is essentially identical to the others) and providing the objects are close (which is true of the ...

  6. Speed of gravity - Wikipedia

    en.wikipedia.org/wiki/Speed_of_gravity

    Two gravitoelectrically interacting particle ensembles, e.g., two planets or stars moving at constant velocity with respect to each other, each feel a force toward the instantaneous position of the other body without a speed-of-light delay because Lorentz invariance demands that what a moving body in a static field sees and what a moving body ...

  7. Time perception - Wikipedia

    en.wikipedia.org/wiki/Time_perception

    The first proposed explanation, called the "motion extrapolation" hypothesis, is that the visual system extrapolates the position of moving objects but not flashing objects when accounting for neural delays (i.e., the lag time between the retinal image and the observer's perception of the flashing object). The second proposed explanation by ...

  8. Relative velocity - Wikipedia

    en.wikipedia.org/wiki/Relative_velocity

    Relative velocities between two particles in classical mechanics. The figure shows two objects A and B moving at constant velocity. The equations of motion are: = +, = +, where the subscript i refers to the initial displacement (at time t equal to zero).

  9. New research helps explain why people move slower as ... - AOL

    www.aol.com/research-helps-explain-why-people...

    New research suggests that older adults may move slower partly because it costs them more energy than younger adults. Scientists believe these findings could lead to new diagnostic tools for ...