Your Daily Equation #26: Einstein's General Theory of Relativity: The Essential Idea  Summary and Q&A
TL;DR
Einstein's General Theory of Relativity explains how gravity works by linking acceleration, curvature, and the warping of space and time.
Questions & Answers
Q: What is Einstein's General Theory of Relativity?
Einstein's General Theory of Relativity is a theory that describes gravity as a result of the curvature of space and time caused by massive objects. It challenges Newton's universal law of gravity.
Q: How does Einstein's theory explain gravity?
According to Einstein's theory, gravity is the result of the warping or curvature of space and time caused by massive objects like the Sun. This curvature affects the trajectory of objects and causes them to move in curved paths, such as planets orbiting the Sun.
Q: What is the connection between acceleration and gravity in Einstein's theory?
Einstein realized that there is a deep connection between accelerated motion and gravity. Acceleration can cancel out gravity, as seen in freefall, or mimic gravity, as experienced during circular motion.
Q: How does Einstein's theory challenge Newton's universal law of gravity?
Newton's law of gravity assumes an instantaneous force between two masses, while Einstein's theory shows that gravity is not instantaneously transmitted. Einstein's theory introduces the concept of the warping of space and time to explain gravity.
Summary & Key Takeaways

Einstein's General Theory of Relativity is one of the major theories that revolutionized our understanding of the physical universe in the 20th century.

The theory explains the force of gravity and challenges Isaac Newton's universal law of gravity.

Einstein realized that gravity is not an instantaneous force, but rather a result of the curvature of space and time caused by massive objects.