[latexpage] Iron has Resistivity of $100\cdot 10^{-9} \frac{\Omega}{m}$ HSS has Resistivity of $540\cdot 10^{-9} \frac{\Omega}{m}$ \begin{itemize} \item Why is the transmission of a material in the proportion of $e^{-x}$, why…

\section{Black body radiation} In the late 19th century, it was seen that every body is radiating, where its intensity is proportional to the fourth power of its temperature (see also…