Abstract
A SPECTROMETER based on a Fresnel zone plate as the focusing and dispersing element has been constructed for use with infra-red radiation between 35µ and 80µ.
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WRIGHT, R., DAYKIN, P. A Spectrometer for the Far Infra-red. Nature 189, 212 (1961). https://doi.org/10.1038/189212a0
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DOI: https://doi.org/10.1038/189212a0
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