Elementary chemical microscopy elementarychemi00cham Year: 1921 58 ELEMENTARY CHEMICAL MICROSCOPY supported by the substage the plate may lie upon the work table, its angle of inclination being obtained by means of a pro- tractor and the plate held in place by means of plasticine for a temporary mounting. A very simple arrangement of the Cheshire plate may then be as indicated in the diagram, Fig. 24, ^=3 Oj 1 Fig. 24. Obtaining Polarized Light by Reflection. the support being an ordinary object slide, while the polarizing plate consists of a half-slide, ground upon its lower surface by r
Elementary chemical microscopy elementarychemi00cham Year: 1921 58 ELEMENTARY CHEMICAL MICROSCOPY supported by the substage the plate may lie upon the work table, its angle of inclination being obtained by means of a pro- tractor and the plate held in place by means of plasticine for a temporary mounting. A very simple arrangement of the Cheshire plate may then be as indicated in the diagram, Fig. 24, ^=3 Oj 1 Fig. 24. Obtaining Polarized Light by Reflection. the support being an ordinary object slide, while the polarizing plate consists of a half-slide, ground upon its lower surface by rubbing upon a piece of glass carrying very fine emery and tur- pentine. After cleaning off the abrasive, the ground surface is blackened. A small mass of plasticine is placed upon the slide and the polarizing plate is pressed down until the proper inclination is obtained as indicated in the diagram. Thus pre- pared, this polarizer is pushed into the opening in the horse- shoe base of the microscope until the center of the plate falls in the optic axis of the microscope, the mirror of the instrument having been removed or swung aside. Light thrown upon the plate will be polarized and reflected in the line of the optic axis of instrument.
Size: 1774px × 1128px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
