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| If a new theory is valid, it must account for the verified results of the old theory in the region where both theories apply |
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| Lines of shortest distance between two points in curved space |
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| general theory of relativity |
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Definition
| Einstein's generalization of special relativity, where gravity causes space to become curved and time to slow down |
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| A slight decrease in the frequency of light due to the effect of strong gravitational fields, such as those of stars |
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| Ripples that travel outward from gravitational sources at the speed of light |
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| Local observations made in an accelerated frame of reference cannot be distinguished from observations made in a Newtonian gravitational field |
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| Momentum at very high speeds approaching the speed of light |
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Definition
| The "energy of being," given the equation Eo = mc**2 |
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Definition
| The intrinsic mass of an object, a fixed property independent of speed or energy |
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