Who established that Earth rotates on its axis using a pendulum experiment?

Who discovered heavy water (D₂O)?

Who first proved that sound travels faster in water than in air?

Who developed the classification of blood groups (A, B, AB, O)?

Who first proposed the concept of the “Noether’s Theorem,” linking symmetries and conservation laws?

The scientist known for the equation “E = mc²” is–

The first person to measure the speed of light with reasonable accuracy was–

Who discovered the law of electromagnetic induction?

Who discovered that galaxies are moving away, leading to the concept of an expanding universe?

Who proposed the modern Big Bang theory mathematically (primeval atom hypothesis)?