Mass Energy Equivalence

Mass and energy are two sides of the same coin, as highlighted by the famous equation E=mc². As objects accelerate and approach the speed of light, their energy and inertia increase, effectively increasing their mass. This principle explains how energy transformations, such as in chemical and nuclear reactions, can lead to a measurable loss of mass, even if it's often undetectable. The discussion also touches on experimental validations of relativity, including the Ives-Stilwell experiment, which confirmed time dilation's role in Doppler shift.