Petzval

Some articles on petzval:

Field Flattener Lens
... Field flattener lenses counteract the Petzval field curvature of an optical system ... create a lens that shifts the focal points of the Petzval surface to lie in the same plane ... is given by the radius of curvature of the Petzval surface ...
Joseph Petzval - Life
... Petzval attended elementary school in Kežmarok, and began his secondary school studies in Kežmarok and Pudlein ... One anecdote told about Petzval is as follows When his family had already decided to make a shoemaker out of Petzval, he read the book Analytic Paper on the Elements of Mathematics ... After Petzval finished the book, the child who had been a weak math pupil swiftly became a math genius ...
Petzval Lens
... The Petzval lens was developed in 1840 by Joseph Petzval ... It consisted of two doublet lenses with an aperture stop in between ...
Joseph Petzval
... Joseph Petzval (German Josef Maximilian Petzval Hungarian Petzvál József Miksa Slovak Jozef Maximilián Petzval (January 6, 1807, Zipser Bela, Kingdom of Hungary (it was in Hungary when Petzval was born ... Petzval studied and later lectured at the Institutum Geometricum (currently Budapest University of Technology and Economics) in Buda (today part of Budapest) ... Petzval became a member of the Hungarian Academy of Sciences in 1873 ...
Joseph Petzval - Discoveries and Inventions - Mathematics
... In mathematics, Petzval stressed practical applicability ... Arguably it could be called the "Petzval transformation", since he was the first to study it and its applications in usual linear differential equations systematically ... Petzval wrote a paper in two volumes as well as a long work on this subject ...