Sir William Lawrence Bragg, CH, OBE, MC, FRS[1] (31 March 1890 – 1 July 1971) was an Australian-born British physicist and X-ray crystallographer, discoverer (1912) of Bragg’s law of X-ray diffraction, which is basic for the determination of crystal structure. He was joint winner (with his father, William Henry Bragg) of the Nobel Prize in Physics in 1915: “For their services in the analysis of crystal structure by means of X-ray”, an important step in the development of X-ray crystallography.

Bragg was knighted in 1941. As of 2018, he is the youngest ever Nobel laureate in physics, having received the award at the age of 25 years. Bragg was the director of the Cavendish Laboratory, Cambridge, when the discovery of the structure of DNA was reported by James D. Watson and Francis Crick in February 1953.
https://en.wikipedia.org/wiki/Lawrence_Bragg

Tsung-Dao Lee

Physics

Jovan Stosic September 20, 2018

https://en.wikipedia.org/wiki/Tsung-Dao_Lee

CP violation

Engineering and technology notes

Jovan Stosic September 20, 2018

In particle physics, CP violation is a violation of CP-symmetry(or charge conjugation parity symmetry): the combination of C-symmetry (charge conjugation symmetry) and P-symmetry(parity symmetry). CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle (C symmetry) while its spatial coordinates are inverted (“mirror” or P symmetry). The discovery of CP violation in 1964 in the decays of neutral kaons resulted in the Nobel Prize in Physics in 1980 for its discoverers James Cronin and Val Fitch.

It plays an important role both in the attempts of cosmology to explain the dominance of matter over antimatter in the present Universe, and in the study of weak interactions in particle physics.