Einstein-based spacetime, gravity, and motion.
Relativity
Einstein-based spacetime, gravity, and motion.
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RELATIVITY
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Relativity Principle
From Galileo to Einstein, the relativity principle changed how we think about motion. No uniformly moving observer gets a privileged view of reality. Einstein extended this idea beyond mechanics to all physics, including light, helping reveal that space and time themselves depend on the observer’s motion.
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Science
FAQ
Did a Canadian discover the Big Bang’s afterglow 25 years early?
Scientific Discovery
History records the discovery of the Big Bang as 1965, but decades earlier in 1941, a Canadian first observed it, but didn’t know it. This demonstrates why observation alone is incomplete without understanding. A theory without evidence is incomplete. A measurement without meaning is incomplete. Progress happens when thought and observation meet.
Relativity
Einstein-based spacetime, gravity, and motion.
Spacetime as geometry.
Classical physics describes motion, energy, and interaction through continuous systems and deterministic laws. From Newtonian mechanics to thermodynamics and electromagnetism, it models a world where causes produce predictable effects. It remains the foundation for engineering, planetary motion, and everyday physical intuition.
Deep-Dive Articles
The Nature of Time
Time is not a ticking metronome; it is the ledger of causation.
The Expanding Universe Explained
ΛCDM remains the leading cosmological model because our current best measurements indicate gravity is not strong enough to stop the universe’s expansion.
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Astronomy
The Expanding Universe Explained
ΛCDM remains the leading cosmological model because our current best measurements indicate gravity is not strong enough to stop the universe’s expansion.
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