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Document Type

Research

Abstract

In a paper read before this Academy last year, a device for controlling comparatively high temperatures (up to about 600" C) was explained, together with the necessary auxiliary apparatus, an ordinary electro-magnet circuit breaker, and the source of constant potential necessary to operate this magnet. The oven described in that paper consisted of a properly insulated porcelain tube 30 cm. long and 5 cm. in diameter. It required 10 amperes to heat it to 450° C. The dimensions of the oven limited the size of the tubes in which the crystals were to be produced to not more than 3 cm. in diameter and 15 cm. in length, and admitted but one at a time. Inasmuch as it requires several months to produce crystals of a size such as is necessary for optical and electrical work, the disadvantage of the oven may be readily seen.

Publication Date

1916

Journal Title

Proceedings of the Iowa Academy of Science

Volume

23

Issue

1

First Page

209

Last Page

211

Copyright

©1916 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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