Question

Which remarkable incident happened in the life of Einstein in 1921

Answer 1

Everyone knows that Einstein is not only a great and famous inventor, but also  an absentminded.

In the year of 1921, he was actually awarded the Nobel Prize for his wonderful discovery of a photo-electric acid.

Every individual is actually acquainted with this talented scientist named Albert.

There are lots of remarkable incident happened in his life, but Nobel Prize is considered as his best.

Answer 2

Carpets observe a lot of dust daily. Dust particles do at rest on the carpet. However when you beat the carpet, you are forcing the dust to move along with the carpet. Due to the dust having inertia, it doesn't move, or rather, it resists motion. This is why dust comes out of a carpet when it is beaten with a stick.