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 1931, physicists Knoll and Ruska unveiled the first electron microscope, revolutionizing science by using magnetic lenses to overcome the limits of visible light. This groundbreaking invention ...