Recent content by Joe Prendergast

Never hurts to repeat in the body of the post :)

Python as stated in my subject line. Specifically the scipy package.

Hello, does anyone know how to retrieve the Hessian at the minimum when using method = ‘trust-constr’?

Does anyone know of a bivariate smoothing spline package that lets you set your own loss function? All of the public domain software I've been able to find (e.g., SCIPY) appears to minimize the sum of squared errors. For example, I'd like to set the spline coefficients to maximize the...

I did provide a reference above, but I will repeat it for you: Modern Astrophysics by Carrol and Ostlie. Additionally, Teardrop stars (associated with Roche Lobes) are covered on page 662.

Educate yourself with a college level textbook. Start with Roche lobes.

Thank you, just what I was looking for.

See the answer below. This is what I was looking for.

In almost any astrophysics textbook, for example, Modern Astrophysics by Carrol and Ostlie

In binary star systems, it is said that one of the stars can assume a teardrop shape resulting from the gravitational pull of the companion star. This shape is typically portrayed as asymmetric (i.e., there is no teardrop shape on side of the star away from the companion star). Yet the...

Suppose a photon from the sun's photosphere, initially traveling toward earth, is absorbed by an atom in the sun's chromosphere. The electron then transitions to its first excited state and spectral darkening is observed at a distinct wavelength on earth. I've read that the electron only stays...

Thanks for the explanation. I was wondering if you could recommend an introductory textbook on QFT.

Ok, thank you. I've always wondered about this.

An electron requires an "exact" wavelength photon to transition from one level of an atom to another. Yet the wavelength of a photon has a a continuous probability distribution, implying that the point probability of achieving an exact wavelength is zero. One can only talk meaningfully about...