Trace of Rays within the Ultra Condenser.

Whilst in the earlier applications of the principle of ultra-microscopic observation the illuminating pencil enters the system from one side only, the light transmitted through the Ultra Condenser is made to converge to a single point from all sides. This is achieved by the arrangement of two spherical reflecting surfaces furnished by two optically worked pieces of glass, as shown in the above diagram. Each ray is subjected to four successive reflections, twice before it encounters the particle and twice after leaving it. In this way the whole of the rays, with the exception of a small fraction, are made to leave the Ultra Condenser on the side on which the light enters. In the upper piece of glass a spherical chamber is ground out concentric with the point at which the rays intersect. This chamber provides a containing vessel for gases, vapours or liquids.

Ultra Microscope Arrangement.

The optical part of the condenser is permanently fitted into a metal case. The cover attaches by a bayonet joint and is fitted with a rubber ring which makes an air-tight joint between the cover and the rim of the container in the condenser. The cover

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Le texte affiché peut comporter un certain nombre d'erreurs. En effet, le mode texte de ce document a été généré de façon automatique par un programme de reconnaissance optique de caractères (OCR). Le taux de reconnaissance estimé pour cette page est de 100,00 %.

La langue de reconnaissance de l'OCR est l'Anglais.

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