Frits Zernike

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Zernike, Frits

 

Born July 16, 1888, in Amsterdam; died Mar. 10, 1966, in Groningen. Dutch physicist. Member of the Royal Netherlands Academy of Sciences (1946).

After graduating from the University of Amsterdam, Zernike received the degree of doctor of science from the university in 1915. He joined the staff of the University of Groningen in 1913 and served as a full professor from 1920 to 1958. Zernike’s principal works deal with such areas as optics and mathematical statistics. He made contributions to the theory of optical instruments, particularly the telescope and microscope. He discovered the phase-contrast principle in 1935 and subsequently built the first phase-contrast microscope. For his invention of the phase-contrast microscope, Zernike received a Nobel Prize in 1953.

WORKS

“Das Phasenkontrastverfahren bei der mikroskopischen Beobachtung.” Zeitschrift für technische Physik, 1935, year 16, no. 11.
“Phase Contrast, a New Method for the Microscopic Observation of Transparent Objects.” Physica, 1942, vol. 9, nos. 7 and 10.
“Wie ich den Phasenkontrast entdeckte.” Physikalische Blätter, 1955, year 11, issue 4.
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References in periodicals archive ?
22,23,24,25) Zernike polynomials enable the rendering of complex corneal shapes and human eye wavefront aberrations to identifiable shapes and mathematical formulas such as defocus, astigmatism, and spherical aberration.
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Recently, many phase recovering methods have been developed as combination of genetic algorithms and parametric methods [2-4], soft computing techniques applied to Zernike polynomials [5], combination of genetic algorithms and frequency guided sequential demodulation [6], particle swarm optimization [7], unwrapping of phase maps with sign changes [8], two-dimensional regularized phase-tracking technique [9], and so forth.
6 They are commonly described in terms of Zernike polynomials and measured by aberrometer which measures the root mean square (RMS) value in micrometers.
Monochromatic aberrations can be decomposed into Zernike polynomials (ZP) consisting of Zernike terms (ZT).