IN a recent paper 1 I derived formulæ expressing the distribution of light in the geometrical focal plane of optical systems of high relative aperture; and, using these formulæ, curves were given ...

Researchers at the University of California are working on a technology that is able to enhance the resolution of a standard light microscope, allowing it to directly view finer structures and details ...

IN letters published in NATURE (September 1, 1921, p. 10; February 16, p. 205, and May 27, 1922, p. 678) on the above-mentioned subjects, I gave an estimate of the limit of microscopic resolving power ...

The latest aberration-corrected electron microscopes can resolve individual atom columns in a silicon crystal that are just 78 pm apart. How many students are told, perhaps during their first science ...