My understanding of radiation is that is travels in a straight line. So a basement buried on three walls with no windows is a great shelter because you have thick dirt on three sides. but the radio active dust landing on the roof is still radiating right through the wood of the house (1 story) ...

Couldn't we just assume that waves have mass and momentum and can become localized? Dirac Deltas can be given a rigorous mathematical foundation but physicist do not use the Gelfand triple. Why not just assume that electrons, photons, etc., have the same dimension as space? I know string theory d...

So a lot of 'proofs' of Faraday's use the third of the Maxwell's equations $\nabla \times \bf {E} = -\dfrac {\partial B}{\partial \it t}$ to simplify the flux integral by first splitting it into two integrals. One for the time-dependent magnetic field and one for the change in flux when the surfa...