write down the achievements of Albert Einstein
Answers

Achievements

Einstein showed that absolute time had to be replaced by a new absolute: the speed of light. Einstein went against the grain and totally dismissed the "Old Physics." He envisioned a world where space and time are relative and the speed of light is absolute (at the time, it was believed that space and time were absolute and the speed of light was relative).
He asserted the equivalence of mass and energy, which would lead to the famous formula E=mc2
Einstein challenged the wave theory of light, suggesting that light could also be regarded as a collection of particles. This helped to open the door to a whole new world--that of quantum physics. For ideas in this paper, he won the Nobel Prize in 1921.
His paper concerning the Brownian motion of particles. With profound insight, Einstein blended ideas from kinetic theory and classical hydrodynamics to derive an equation for the mean free path of such particles as a function of the time.
Einstein showed that absolute time had to be replaced by a new absolute: the speed of light. Einstein went against the grain and totally dismissed the "Old Physics." He envisioned a world where space and time are relative and the speed of light is absolute (at the time, it was believed that space and time were absolute and the speed of light was relative).
He asserted the equivalence of mass and energy, which would lead to the famous formula E=mc2
Einstein challenged the wave theory of light, suggesting that light could also be regarded as a collection of particles. This helped to open the door to a whole new world--that of quantum physics. For ideas in this paper, he won the Nobel Prize in 1921.
His paper concerning the Brownian motion of particles. With profound insight, Einstein blended ideas from kinetic theory and classical hydrodynamics to derive an equation for the mean free path of such particles as a function of the time.
Einstein showed how to calculate Avogadro's number and the size of molecules.