Conclusions
As the result of the above investigation we obtained a mean calibration curve and an analytical equation which represents with sufficient accuracy the relation between the thermal emf and temperature for the types of telescopes we investigated. This makes it possible to recommend a new, more efficient technique of calibrating grade 2 telescopes at four temperatures in the range of 900–1800°C.
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Shpigel'man, E.S., Golub, L.M. Relation of the thermal emf to temperature in telescopes type tera -50/900–1800. Meas Tech 4, 192–194 (1961). https://doi.org/10.1007/BF00990246
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DOI: https://doi.org/10.1007/BF00990246