Eminent Physicist P. Hariharan passes away

July 28, 2015

Eminent Indian physicist Dr Parameswaran Hariharan passed away in California, United States. He was 89.
Physicist career

Hariharan had contributed in various researches including in the design of a new 3-beam interferometer, first practical radial-shear interferometer and double passed Fabry-Perot interferometer.
He was also the first physicist to apply digital phase-shifting techniques to holographic interferometry in order to measure strains and vector displacements.
He had developed multicolour rainbow holograms and improvised multicolour reflection holograms.
In his entire career, Dr. Hariharan had authored 4 books and published more than 200 research papers.

Personal life

Hariharan was born on December 24, 1926. He was the son of Professor H. P. Waran (H. Parameswaran) of Presidency College and the son-in-law of Alladi Krishnaswamy Iyer.
He worked at New Delhi based National Physical Laboratory (NPL) from 1949 to 1951 and at the Ottawa based National Research Council (NRC) from 1951- 1954.
He had received a PhD (doctorate) for his work on photographic resolving power.

Awards: Joseph Fraunhofer Medal of the Optical Society of America, Walter Boas Medal of the Australian Institute of Physics and Thomas Young Medal of the Institute of Physics, London.

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