Sublime
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Here R is a fixed parameter telling us how big our sphere is, not a coordinate.
Sean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
Since the day Isaac Newton laid down his laws, a number of other kinds of laws have been suggested for fundamental physical systems. James Clerk Maxwell wrote down a set of equations for electricity and magnetism; Albert Einstein proposed an equation for the curvature of spacetime; Erwin Schrödinger suggested an equation for the wave function of a
... See moreSean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
His idea was to take physics beyond its age-old dualism of laws versus conditions, of evolution versus creation.
Thomas Hertog • On the Origin of Time: Stephen Hawking's Final Theory
Robert B. Leighton • Six Easy Pieces: Essentials of Physics Explained by Its Most Brilliant Teacher
entropy increased during inflation
Thomas Hertog • On the Origin of Time: Stephen Hawking's Final Theory
The combination on the left-hand side is the Einstein tensor.
Sean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
In string theory, this is called ‘the law of exponential sensitivity to initial conditions of chaotic systems,’ and suggests that small shifts in initial starting points can lead to dramatic changes in the end result.