Why Clocks Run Faster on Higher Floors - Leonard Susskind скачать в хорошем качестве

Why Clocks Run Faster on Higher Floors - Leonard Susskind

Time does not pass at the same rate everywhere. A clock on the top floor of a building runs slightly faster than one on the ground floor. The difference is tiny — only nanoseconds per year — but it is real and measurable. According to Einstein’s theory of general relativity, gravity curves spacetime. The stronger the gravity, the slower time passes. Higher altitude means weaker gravity, which means time moves faster. This isn’t theoretical. GPS satellites must correct for this effect every day or navigation would drift by kilometers. Time isn’t a universal constant. It bends.