The exceptionally high magnification of the most modern type of electron microscope helps solve the research problems of industrial chemistry at the Experimental Station. Electronic images produced by magnetic �lenses� of this instrument reveal...
The exceptionally high magnification of the most modern type of electron microscope helps solve the research problems of industrial chemistry at the Experimental Station. Electronic images produced by the magnetic 'lenses' of this instrument reveal...
A DuPont chemist at work in the laboratory. The petrographic microscope at his right is used to identify organic compounds. Insets show (1) the crystal of an organic compound (2) the interference figure or optic picture created by passing polarized...
The electron microscope is one of the research chemist's most valuable aids to discovery. This one at the DuPont Company's Experimental Station is capable of 100,000 diameter magnification. The image is projected, for direct visual examination, on...
Manufacturing of Synthetic Rubbers-Neoprene, 'Nordel', 'Viton'
Neoprene latex looks like this at 2500 magnification. This photograph was made with the aid of an electron microscope, one of the research chemists' most valuable tools to discovery.
Manufacturing of Synthetic Rubbers-Neoprene, 'Nordel', 'Viton'
Particles of neoprene latex, made by DuPont, look like this when magnified 25,000 times. Prior to examination under the electron microscope, the specimen was show-cast with gold to give the three dimension effect. Shadow-casting is a relatively new...
This diagram shows a typical surface cross section as it might appear, magnified many thousands of times, under an electron microscope. The surface might be that of a fiber, or of a painted wall, or even wall paper. In Line No. 1, rough soil...
This photograph demonstrates the exceedingly fine particle size of Ludox colloidal silica, a new product of the DuPont Company. This picture was taken with an electron microscope. The magnification is 25,000 diameters. This high magnification was...
A single thread of Cordura rayon sailcloth, as used in the quadrilateral jib of America's 1937 cup defender Ranger, is unwound into the 390 filaments of which it is made. The microscope, magnifying them twenty five times, presents an unusual...
A bias cross section of Cordura rayon sailcloth as used in the quadrilateral jib of Americas 1937 cup defender, Ranger, magnified sixty times y the microscope.
After a preliminary and two water pressure washings, interspersed by high temperature baking in order to remove all formations of viscose, spinnerets are dried in an oven before inspection under a microscope. The procedure for cleaning and checking...
Spinnerets are inspected under a microscope to determine surface scratches and to check the minute holes through which viscose solution is forced to form filaments of rayon yarn at plants of E.I du Pont Nemours & Company. Precision checking for...
Spinnerets are inspected under a microscope to determine surface scratches and to check the minute holes through which viscose solution is forced to form filaments of rayon yarn at plants of E.I du Pont Nemours & Company. Precision checking for...
