Recent content by tthtlc

The energy loss is low is because of the low frequency/longer wavelength phonon - which does not coincide with the size of the molecules/atoms. The higher frequencies/shorter wavelength phonon is likely to coincide with the size of the molecules/atoms, and thus losing its energy through...

Essentially, if you know the energy and divide it by the volume, you get energy density. And to get energy (in Joules), it is jut the power (in Watts) multiply by the duration (in secs). And for free space vs medium with refractive index, the energy dissipation comes in the form of Lambert...

well, these are all classical mechanics, and this method is also a classical assumption in physics, look up textbooks for the details, sorry about that.

Conceptually, the two stars can be treated as a point mass + a star with mass = sum of the two stars. Then given the periodicity T, can can calculate the distance between the point mass and the main star -based on the centripetal force should equal the attractive gravitation pull. And from...