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general relativity

videos

Gravitational Lensing

Astrostatistician Alan Heavens on general relativity, how lensing can be used to observe dark matter and whether Einstein's theory of gravity might be wrong

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Gravity

Cosmologist Sergei Odintsov on Newton's law, modifications of general relativity, and the essence of gravity

faq

What Is Time?

Physicist Mahdi Godazgar on the arrow of time, Schrödinger equation, and Einstein's relativity theory

videos

Politics and Einstein Relativity Theory

Physicist David Kaiser on measuring time delay, problems of communications during war, and governments impact on fundamental science

videos

Atomic Clocks and General Relativity

Physicist Daniel Kleppner on precise time measurements, gravitational field, and the Global Positioning System

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General Relativity Fiscal Language

Economist Laurence Kotlikoff on the difference between taxing and borrowing, government debts, and financial sustainability

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The Search for Gravitational Waves

Physicist Nergis Mavalvala on the general theory of relativity, Hulse-Taylor system, and the way gravitational wave can be measured using a mirror, a laser, and a clock