Scanning microscope is used to look at cell structure with 10 nm resolution. A beam of electrons from a hot filament is accelerated to 50,000 km/s and then focussed to a small spot on the specimen. What is the wavelength in nanometers of the beam of incoming electrons?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

What can you increase the strength of an electromagnet by

A( developed during the process of technology design