Recent Posts
- The Eddington Luminosity in Spherical Accretion and Beyond
- How a Molecular Cloud Collapses Into a Star
- Why $R_{\mu\nu}=0$ does not imply $R_{\mu\nu\rho\sigma}=0$
- Derivation of the Cosmic-Ray Diffusion Coefficient from Pitch-Angle Scattering
- The rubber sheet gets the geometry right and the mechanism wrong!
Tag Archives: philosophy of science
The rubber sheet gets the geometry right and the mechanism wrong!
You have seen this demonstration. Somebody stretches a rubber sheet over a frame, drops a bowling ball in the middle, and the sheet sags. Then they roll a marble across it and the marble curves toward the bowling ball, maybe … Continue reading
Posted in Diary, Expository, Notes, Scratch essays
Tagged Astrophysics, debunking, equivalence principle, general relativity, Geodesics, gravitational waves, gravity, manifolds, Mathematical Physics, philosophy of science, physics, Schwarzschild metric, science, science writing, spacetime, spacetime curvature, theoretical physics
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On physics, visibility, and why I stayed
I remember being in high school and telling people I wanted to study physics. The response was almost always the same. Not discouragement exactly, more like mild concern, the kind adults give you when they think you are about to … Continue reading
Posted in Diary, Reviews
Tagged academia, career, philosophy of science, science, science writing
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Aristotle on Motion
Aristotle divided motion into two classes: natural motion and violent motion. These ideas are not really part of modern physics anymore, but they are important because they were among the first serious attempts to explain motion logically rather than through … Continue reading
Posted in Diary, Scratch essays
Tagged classical mechanics, philosophy of science, science writing
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