Explore the transition from classical to quantum physics through the radiation of an electron in circular motion, deriving the power radiated and its implications for particle physics and technology.

Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron-hole pair quasiparticles termed as excitons.

Antenna arrays are an important class of antennas which are widely used in point to point communication systems, where a very high directive beam of radiation is needed.

One of the most widely used antennas in telecommunication is the dipole antenna. In this problem, we investigate the radiation properties of such an antenna.

In this problem we first investigate the radiation properties of a very short and thin filament of current.

Using the charged ring potential we derive the potential and field for a homogeneously charged disk. Limiting cases and generalizations are discussed.

The potential of a finite line charge is calculated. Approximations are performed and shown to correspond to known results.