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References

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  1. White and Adams, Phys. Rev. 14, pp. 44–48; 1919.
    [Crossref]
  2. See, H. S. Roberts, Journ. Wash. Acad. Sci. 11, pp. 401–9; 1921.
  3. D. J. Beaver and J. J. Beaver, Journ. Ind. and Eng. Chem. 15, pp. 359–61; 1923.
    [Crossref]
  4. J.O.S.A. & R.S.I.,  6, p. 972, 1922.
  5. See H. S. Roberts, J. O. S. A. & R. S. I. 6, pp. 965–977; 1922.
    [Crossref]

1923 (1)

D. J. Beaver and J. J. Beaver, Journ. Ind. and Eng. Chem. 15, pp. 359–61; 1923.
[Crossref]

1922 (2)

J.O.S.A. & R.S.I.,  6, p. 972, 1922.

See H. S. Roberts, J. O. S. A. & R. S. I. 6, pp. 965–977; 1922.
[Crossref]

1921 (1)

See, H. S. Roberts, Journ. Wash. Acad. Sci. 11, pp. 401–9; 1921.

1919 (1)

White and Adams, Phys. Rev. 14, pp. 44–48; 1919.
[Crossref]

Adams,

White and Adams, Phys. Rev. 14, pp. 44–48; 1919.
[Crossref]

Beaver, D. J.

D. J. Beaver and J. J. Beaver, Journ. Ind. and Eng. Chem. 15, pp. 359–61; 1923.
[Crossref]

Beaver, J. J.

D. J. Beaver and J. J. Beaver, Journ. Ind. and Eng. Chem. 15, pp. 359–61; 1923.
[Crossref]

Roberts, H. S.

See H. S. Roberts, J. O. S. A. & R. S. I. 6, pp. 965–977; 1922.
[Crossref]

See, H. S. Roberts, Journ. Wash. Acad. Sci. 11, pp. 401–9; 1921.

White,

White and Adams, Phys. Rev. 14, pp. 44–48; 1919.
[Crossref]

J. O. S. A. & R. S. I. (1)

See H. S. Roberts, J. O. S. A. & R. S. I. 6, pp. 965–977; 1922.
[Crossref]

J.O.S.A. & R.S.I. (1)

J.O.S.A. & R.S.I.,  6, p. 972, 1922.

Journ. Ind. and Eng. Chem. (1)

D. J. Beaver and J. J. Beaver, Journ. Ind. and Eng. Chem. 15, pp. 359–61; 1923.
[Crossref]

Journ. Wash. Acad. Sci. (1)

See, H. S. Roberts, Journ. Wash. Acad. Sci. 11, pp. 401–9; 1921.

Phys. Rev. (1)

White and Adams, Phys. Rev. 14, pp. 44–48; 1919.
[Crossref]

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Figures (2)

Fig. 1
Fig. 1

Diagram to illustrate principle of temperature-regulator for electric-furnaces. The heating coil forms one arm of a wheatstone bridge; changes in temperature of this coil cause an unbalancing of the bridge which applies an emf to a mechanism which controls the current through the furnace.

Fig. 2
Fig. 2

Diagram of essential parts and electrical connections of the temperature-regulator. The wheatstone bridge consists of the furnace coil, F; the fixed resistance, R5, R6, and R7; and the variable resistances, D1 and D2. The unbalanced emf across the bridge is applied to the galvanometer, G, which, in conjunction with the electron tube, T, and the relays, S1 and S2, regulates the heating-current so that the temperature within the furnace remains constant.