Abstract
IF a wire of ½ to ¾ mm. diameter be bent into a closed circular loop of about 8 mm. diameter and dipped in water, or a transparent oil such as castor oil, a stable liquid film can be readily obtained covering the loop. A thin dished metal disc with a circular hole in the centre is a convenient alternative to the wire loop. Liquid can be easily added or removed without breaking the film, so as to vary the curvature of the liquid lens so formed. Such a lens, though far from perfect, may be made to give a magnifying power of nearly 5 over a small field.
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PAGET, R. A Primitive Lens. Nature 112, 326 (1923). https://doi.org/10.1038/112326b0
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DOI: https://doi.org/10.1038/112326b0
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