Einstein's Relativity
Einstein's Argument
- All physical evidence must be based on measurement.
- A cartesian coordinate system attached to a reference body can be used
as a frame of reference for measurement.
- All bodies are at rest or in uniform motion relative to each other
(the restricted, or special, theory).
- The principle of relativity (in the restricted sense p16): ...natural
phenomena run their course with respect to [all reference frame] according
to exactly the same general laws.
- A general law of the universe: the speed of light is constant.
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- No, classical addition of velocities does not work; it is inconsistent
with the law of the constant speed of light.
- No, the Galilean Transformation of coordiates between reference frames does not preserve the law of the constant speed of light.
- Yes, time and distance measurements are always relative to a frame of reference and not absolute measures. (Time and Space are not absolute.)
- Yes, clocks slow, rods shrink when in motion.
- Yes, the Lorentz transformation of coordinates between reference frames preserves the law of the constant speed of light.
Contributions to Ontology and Epistemology
- What major contribution did Einstein make to the ontological question?
- Seminar idea (KC, Nathan, Eddie): In what way have we come full circle
from the presocratics to Einstein (epistemologically)?
- Seminar idea (Ross): How does the process of cultural assimilation of
revolutionary ideas happen? Where are we now in the process of assimilating
the revolutions of relativity and quantum theory?