How I discovered phase contrast by Frits Zernike (source code)

= How I discovered phase contrast by Frits Zernike
{c}
{tag=Work by Frits Zernike}
{title2=lecture 11 December 1953}

Nobel lecture delivered 11 December 1953. Reprinted in Nobel Lectures, Physics 1942–1962 (Elsevier, 1964); transcript pp. 239–246.

https://www.nobelprize.org/uploads/2018/06/zernike-lecture.pdf

https://studyres.com/doc/8539414/how-i-discovered-phase-contrast