Albert Einstein: 15 Frequently Asked Questions
Discover 15 key questions about Albert Einstein, the theoretical physicist who developed relativity, reshaped modern physics, and became the most iconic scientist of the 20th century.
Who was Albert Einstein and why is he considered a genius?
Albert Einstein (1879-1955) was a German-born theoretical physicist whose work fundamentally transformed humanity's understanding of space, time, energy, and gravity. In a single miraculous year — 1905 — he published four papers that each would have secured a permanent place in physics: on the photoelectric effect, Brownian motion, special relativity, and the mass-energy equivalence expressed in E=mc^2. A decade later, his general theory of relativity reimagined gravity as the curvature of spacetime itself. He received the Nobel Prize in Physics in 1921 for his explanation of the photoelectric effect. His name has become a universal synonym for genius, and his image — wild white hair, rumpled sweater, penetrating gaze — is arguably the most recognizable scientist's face in history.
What is the theory of relativity in simple terms?
Einstein's theory of relativity comes in two parts. Special relativity (1905) says that the laws of physics are the same for all observers moving at constant speed, and that the speed of light is always constant regardless of how fast you are moving. This leads to astonishing consequences: time slows down for fast-moving objects, lengths contract, and mass increases as you approach light speed. General relativity (1915) extends these ideas to include gravity, describing it not as a force but as the warping of spacetime by mass and energy. Massive objects like stars curve the fabric of space around them, and other objects follow those curves. GPS satellites, gravitational lensing, and black hole imaging all confirm Einstein's predictions with remarkable precision.