(London, Richard Taylor, 1828). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1828 - Part I. Pp. 105-112.
Reference : 46089
First appearance of the paper in which Barlow described his invention of the so-called first ""Barlow-Lens"".He constructed his first achromatic telescope lens by enclosing liquid carbon disulfide between two pieces of glass. The Barlow- lens has come into general use for increasing the eyepiece power of any optical instrument.
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