Question

Many scientists at first reacted skeptically to Einstein’s equation,.$\mathbf{E}={\text{mc}}_{}^{\text{2}}$ Why?

Short answer

The concept that mass and energy are interconverted has piqued the interest of scientists.

Step-by-step solution

Explanation about Einstein equation:

Einstein proposed that the speed of light (C) is constant. During that time, the change in mass is considered insignificant for the values were too small to be considered in an experiment.

The idea that this simple equation can provide a complex idea caught the attention of many scientists.

Hence The idea that mass and energy are interconverted take the attention of scientists community.