. Elementary chemical microscopy . ^=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- s
. Elementary chemical microscopy . ^=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.
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Photo credit: © The Bookworm Collection / Alamy / Afripics
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectmicroscopy, bookyear1
