THE ULTRA-MICROSCOPE.
A whole new world of things important to science, medicine, and engineering liais been revealed by what is known as the ultra-microscope. A powerful microscope will magnify a tiny object two to four million times (in axea), but many of the objects with which we have to deal to-day are too email to be seen even at such a magnification. By using ultra-violet light, which consists of much shorter waves than those we see as white light, it was found possible to take photographs at still higher magnifications with such exquisite" definition that the structure of microbes and things of similar size have been seen for the first time. The eye is quite blind to these ultraviolet rays, so that we have to record the image on a photographic plate. Another method is to illuminate very tiny objects fi oin the sides or edges, when they can be seen clearly against a dark background. The ultra-microscope has opened up new fields of research and is helping greatly in man's fight against disease °
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Auckland Star, Volume LXII, Issue 192, 15 August 1931, Page 2 (Supplement)
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174THE ULTRA-MICROSCOPE. Auckland Star, Volume LXII, Issue 192, 15 August 1931, Page 2 (Supplement)
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