Ph2
создатель A Jenkins

1. D.C. circuits
1.1. Series and parallel circuits
1.2. Combination of resistors
1.3. The potential divider
2. Nuclear Structure
2.1. simple model for the nuclear atom
2.2. The nucleus
2.3. Isotopes
3. Quantum Physics
3.1. The electromagnetic spectrum
3.2. Spectra
3.2.1. Optical
3.2.2. X-rays