La Demostración de Einstein para E=mc²

The video explains the famous equation derived from special relativity, using a thought experiment involving a cat emitting light in space. It explores energy conservation, the relativistic Doppler effect, and how kinetic energy and mass change when observed from different perspectives. The conclusion ties these concepts to the equation E=mc².

What is the relationship between kinetic energy and mass as discussed in the text?

Describe how the mass of the cat changes when it emits light according to the text.