Concept of this topic: Mass-Energy Equivalence

1) What is this concept, how is it related to physics and how is it impact to human and social life ?

2) Describe the historical development of the concept and its explanation ?

3) Describe the main scientists background ?

4) Experimental demonstration/ working model/simulation ?

5) Application of the concept in numerical problem solving or how it resolved any

existing issue ?

6) Real life or proposed applications of the this concept ?

7) Describe the impact on understanding of the concept to the universe ?

Can your answer all of the questions into a perfect physics perspective, please ?