Astro 1020 - Chapter S2
The effect in which you observe time running more slowly in reference frames moving relative to you.
reference frame (or frame of reference)
what two people (or objects) share if they are not moving relative to one another.
special theory of relatively
Einstein's theory describes the effects of the fact that all motion is relative and that everyone always measures the same speed of light.
A paradox concerning the binary star Algol, which contains a sub-giant star that is less massive than its main-sequence companion.
a frame of reference in which all objects are weightless and hence float freely.
The effect in which you observe lengths to be shortened in reference frames moving relative to you.
Theories of relatively (special and general)
Einstein's theories that describe the nature of space, time, and gravity.
mass increase (in relative)
The effect in which an object moving past you seems to have a mass greater than its rest mass.
relativity of motion
Theory relativity takes its name from the idea of what?
That measurements of time and space, make sense only when describe whom or what they are being measuring relative to.
Einstein's theory of relativity tells us?
1. The laws of nature are the same for everyone.
2. The speed of light is the same for everyone.
Theory claim that two things in the universe are absolute:
- No material object can exceed the speed of light.
-We must revise our notions of space and time when dealing with objects near light speed.
What are the major ideas of special relativity?
All motion is relative, but laws of nature, including the speed of light, are the same for everybody.
What is relative about relativity?
The laws of physics, including the speed of light, are the same for everyone.
What is absolute about the relativity?
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