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Georges Nomarski
Georges (Jerzy) Nomarski (January 6, 1919 – 1997) was a Polish physicist and optics theoretician. Creator of differential interference contrast (DIC) microscopy, the method is widely used to study live biological specimens and unstained tissues and in many languages bears his name. Biography Born in Nowy Targ, Nomarski was educated in Warsaw at the Warsaw University of Technology (known at that time as the ''Warsaw Polytechnic'') and served in the Polish Resistance during World War II. Captured by German forces, he was a prisoner of war until March 1945. After the war when the Soviets supported communists installed their regime over Poland, Nomarski had to escape to Belgium as a political refugee. He studied there briefly before he moved to France for his permanent residence in 1947. He finished his education in France and received his diploma from l'Ecole Supérieure d'Optique Paris (Grande Ecole). In 1950, Nomarski established the ''Laboratoire de Microscopie Optique de L'Inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Differential Interference Contrast
Differential interference contrast (DIC) microscopy, also known as Nomarski interference contrast (NIC) or Nomarski microscopy, is an optical microscopy technique used to enhance the contrast in unstained, transparent samples. DIC works on the principle of interferometry to gain information about the optical path length of the sample, to see otherwise invisible features. A relatively complex optical system produces an image with the object appearing black to white on a grey background. This image is similar to that obtained by phase contrast microscopy but without the bright diffraction halo. The technique was developed by Polish physicist Georges Nomarski in 1952. DIC works by separating a polarized light source into two orthogonally polarized mutually coherent parts which are spatially displaced (sheared) at the sample plane, and recombined before observation. The interference of the two parts at recombination is sensitive to their optical path difference (i.e. the product ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
