Anti-Phymin: U. S. Department of Agricul
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C.
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Article
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1933
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Elsevier Science
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English
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CURRENT TOPlCS. 227 it that its heat loss is smalltaking advantage of the fact that electrons in an arc-discharge can go around corners, while heatradiation must go in straight lines. This combination of heatshielded cathode and low-pressure gas appears to give the four desired characteristics of a