Question

How can we convert energy into mass?

Answer 1

• Remember Einstein's famous equation showed that energy can be converted into mass and mass can be converted into energy.
• In other words, they are equivalent. They are the same thing. And since c is the speed of light we can get a huge amount of energy from a small amount of mass.

https://www.youtube.com/watch?v=ql6TKCo2SZQ

https://youtu.be/VCH_wukiYkI 

For more detail: http://sphericalhysterical.com/can-energy-be-converted-into-mass/