Equivalence principle
TopicHeard in 1 episode across 1 show since Jul 2026
The equivalence principle is the fundamental hypothesis in physics stating that the gravitational mass and inertial mass of an object are equivalent. Its weak form asserts that all masses in free fall follow identical trajectories regardless of their composition, while Albert Einstein's extended form posits that the local effects of gravity are indistinguishable from those of a uniformly accelerating reference frame. This principle served as a crucial foundation for the development of the theory of general relativity.
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| Nov 2025 | 0 |
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What experts have said about Equivalence principle
2 statements · 2 positive
The equivalence of gravitational and inertial mass is verified to one part in 10¹⁵.
“now we know it's true to one part in 10 to the 15”
Open the episode · Adam Brown – Einstein's happiest thought: General Relativity from scratchListen at 15:03
The equivalence principle is an empirical foundation for general relativity.
“you probably want the equivalence principle, that the inertial, it's an empirical fact that the inertial masses and the gravitational mass are the same for everything”
Open the episode · Adam Brown – Einstein's happiest thought: General Relativity from scratchListen at 1:32:01
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Episodes
1 episode featuring Equivalence principle, newest first
