Physics & astronomy

A physical model links measured quantities to predictions that can fail.

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Introduction to Physics & astronomy

How do observations constrain a physical model?

Physics & astronomy3h · IntroductionBeginner

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Thermodynamics & entropy

Why does time have an arrow?

Physics & astronomy22h · TopicSome background

Quantum foundations

What does quantum theory describe?

Physics & astronomy22h · TopicSome background

Complex systems

How does order emerge from interaction?

Physics & astronomy22h · TopicSome background

Motion and measurement

How can we distinguish position from velocity?

Physics & astronomy14h · TopicSome background

Stars and observation

How can light tell us about a distant star?

Physics & astronomy14h · TopicSome background

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Nick Lane

Evolutionary biochemistry and accounts of how energy conversion shaped life. Trace the mechanism and distinguish evidence from a proposed historical sequence.

Emmy Noether

Mathematical work on algebra and the relation between continuous symmetries and conservation laws. Begin with a precise statement and its assumptions.

Chien-Shiung Wu

Experimental physics, including a test of parity conservation in beta decay. Reconstruct the prediction, arrangement and observation before discussing the historical recognition.

Abdus Salam

Theoretical physics and electroweak unification. Read the formal framework alongside the predictions and the experiments that can constrain it.

Connect this subject

What does energy explain about life?

Study metabolism, cell evolution and bioelectric organisation, while keeping physical measurements distinct from proposed historical explanations.

When does a pattern become an explanation?

Compare symmetry, information and models across mathematics, physics and living systems. Similar vocabulary does not establish identical mechanisms.