The Electron Microscope
Abstract
The original light microscope of 250 year ago had a useful magnification of about 20 diameters. All the advances in microscope design of the past two and one-half centuries have achieved a maximum useful magnification of about 1,000 diameters. About 60 years ago, Abbe gave theoretical support to experimental observations that optical instruments could not reveal objects smaller than one-third the wavelength of light. The electron microscope, entirely a product of the past twenty years, has already surpassed this limit by a factor of 50 to 100.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 16, 1943
- Accession Number
- AD1176374
Entities
People
- Herbert Friedman
- Laverne S. Birks
Organizations
- United States Naval Research Laboratory