Recent content by Lizard

I am trying to understand the red line in the below diagram. This is Case B mass transfer (on a thermal timescale, through Roche-Lobe overflow). Mass transfer begins at point B. Because this is mass transfer on a thermal timescale, it must be dynamically stable, meaning that the radius of the...

The standard output waveform of a photomultiplier tube has a "negative" pulse, like below. Why is the amplitude negative?

If there is a luminosity per unit wavelength defined as L_λ dλ, am I correct in thinking that the conversion to luminosity per unit frequency (L_ν) would be L_ν = L_λ (λ^2/c)? And building off of that, if the shape of a spectrum was proportional to a power-law: L_λ = λ^(β), is there a way to...

I was reading this article (https://www.nature.com/articles/srep40083) about designing a panoramic lens with transformation optics, and wanted to try to play around with modifying the coordinate transformations. I contacted one of the authors of the article, and she mentioned that she plotted...

I was reading this article: https://arxiv.org/ftp/arxiv/papers/1005/1005.5206.pdf , regarding the mathematical description of a diamond-shaped cloaking device, and am struggling to understand how the authors found the coordinate transformations in equations (1) and (5). What is the process for...