Famous Personalities and Discoveries

Albert Einstein first proposed that gravity affects light's motion through his General Theory of Relativity in 1915. His work predicted that massive objects like stars would bend light passing near them, which was later confirmed by Eddington's observations.

Giuseppe Garibaldi was a key figure in the Italian unification movement (Risorgimento) in the 19th century. His military campaigns and nationalist efforts helped unify the Italian peninsula.

Bhaskaracharya (Bhaskara II), the 12th-century Indian mathematician and astronomer, calculated the time taken by Earth to orbit the Sun in his work Siddhanta Shiromani (1150 AD). He determined it to be approximately 365.258 days, which is remarkably close to the modern value of 365.256 days. Einstein and Newton worked much later on different aspects of physics, and Galileo (misspelled as 'Gellilio') focused on astronomy and physics but not this specific calculation.

E. W. Barnes was Ramanujan's tutor at Cambridge who was both a mathematician and later became a bishop in the Anglican church. Barnes was a Fellow of the Royal Society and supported Ramanujan during his time at Trinity College, Cambridge.

P.C. Mahalanobis, the famous Indian statistician and economist, was a close friend of Ramanujan during his Cambridge days. Mahalanobis wrote about their interactions and helped Ramanujan with practical matters. Thomas Hardy was his mathematical collaborator, not an economist, and the other options are not correct.

Eric Neville, a British mathematician, was instrumental in persuading Ramanujan to come to Cambridge. Neville was impressed by Ramanujan's theorems and personally traveled to India to escort him back to England. Jacob Bernoulli was a 17th-century Swiss mathematician long before Ramanujan's time, and Pierre Deligne is a 20th-century mathematician born after Ramanujan's death.

Nicolaus Copernicus formulated the heliocentric model in the 16th century, proposing that the Earth and other planets revolve around the Sun. This challenged the prevailing geocentric view.

Nicolaus Copernicus formulated the heliocentric model in the 16th century, proposing that the Earth and other planets revolve around the Sun. This challenged the prevailing geocentric view.

Ole Rømer first demonstrated that light has a finite speed in 1676 by observing Jupiter's moon Io. Einstein developed relativity theory, Newton formulated laws of motion, and Galileo studied motion but didn't measure light speed.

Nicolaus Copernicus formulated the heliocentric model (earth revolves around sun) in the 16th century. Newton discovered gravity, Dalton proposed atomic theory, and Einstein developed relativity.

Galileo did not invent the telescope but significantly improved its design and was the first to use it systematically for astronomical observations. He discovered Jupiter's four largest moons (now called Galilean satellites) and studied pendulum motion, establishing that a pendulum's swing duration depends on its length, not amplitude.

Ole Romer first measured the speed of light in 1676 by observing the timing of Jupiter's moon Io. He noticed that the observed period of Io's orbit varied depending on Earth's distance from Jupiter, concluding that light has a finite speed. Einstein and Newton are incorrect - they worked on theoretical aspects of light, not measurement. Galileo attempted to measure light speed but failed.

William Herschel discovered Uranus in 1781 using a telescope he built himself. This was the first planet discovered with a telescope. Copernicus developed the heliocentric model but didn't discover Uranus.

Nicolaus Copernicus formulated the heliocentric model (sun-centered solar system) in the early 16th century, published in 'De revolutionibus orbium coelestium' (1543). Newton formulated laws of motion and gravitation, Dalton proposed atomic theory, and Einstein developed relativity theory.