We are all moving at the speed of light

You've probably heard that nothing moves faster than the speed of light. But did you know nothing moves slower than the speed of light? We are all moving at the speed of light.

Einstein's special relativity forces us to think of time as a dimension we travel through - just like we travel through the three dimensions of space. The unit of measurement of this space-time is called the 'proper distance' and it supersedes both meters and seconds. Because meters and seconds are unified by the proper distance, speed loses it's meaning. We are only in control of the direction we travel through space-time. Fast moving objects appear to be ageing slowly - they are moving almost entirely through space and very little through time. Slow moving objects age quickly - they are moving almost entirely through time and very little through space.

Transforming between frames of reference moving at different speeds is very much like a rotation. In fact it IS a rotation - a hyperbolic rotation. In the context of special relativity however, it is called a Lorentz transformation.

Animation done using manim - a software created by Grant Sanderson of 3blue1brown.

Видео We are all moving at the speed of light канала STEM Cell