![]() ![]() ![]() If both travel at a constant velocity, then both are in an inertial frame of reference. ![]() In Special Relativity, it is important to consider both the motion of the observer and the object being observed. Example: A camera falling down will capture a video from a non-inertial frame of reference since the camera itself is experiencing gravitational acceleration.This acceleration may constitute only directional changes and the speed of a non-inertial frame of reference can thus be constant. Note: Whilst the Earth orbits the Sun and thus experiences centripetal acceleration, we still consider it as an inertial frame of reference since this acceleration is negligible.Ī non-inertial frame of reference is a reference frame is one that accelerates and thus does not have a constant velocity.Example: A camera fixed to the ground is stationary and thus will capture a video from an inertial frame of reference. ![]()
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