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References

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  1. Wahlin and Whitney, Phys. Rev. 50, 735 (1936).
    [Crossref]
  2. A. G. Worthing, J. O. S. A. 13, 635 (1926).
    [Crossref]

1936 (1)

Wahlin and Whitney, Phys. Rev. 50, 735 (1936).
[Crossref]

1926 (1)

A. G. Worthing, J. O. S. A. 13, 635 (1926).
[Crossref]

Wahlin,

Wahlin and Whitney, Phys. Rev. 50, 735 (1936).
[Crossref]

Whitney,

Wahlin and Whitney, Phys. Rev. 50, 735 (1936).
[Crossref]

Worthing, A. G.

A. G. Worthing, J. O. S. A. 13, 635 (1926).
[Crossref]

J. O. S. A. (1)

A. G. Worthing, J. O. S. A. 13, 635 (1926).
[Crossref]

Phys. Rev. (1)

Wahlin and Whitney, Phys. Rev. 50, 735 (1936).
[Crossref]

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Figures (3)

Fig. 1
Fig. 1

Diagram showing apparatus used in measuring the two principal polarized light components in the beams emitted or reflected by polished metal ribbon filaments for various angles of emergence or of incidence. S is a nearly enclosed light source, M a lamp containing a ribbon filament whose reflectivity is to be measured, Q a rochon double image prism, L a lens imaging S on the ribbon, P a disappearing filament pyrometer with pyrometer lamp at l, absorbing screen at a, limiting diaphragm at d, and colored pyrometer glass filter at f. S, L, and M are supported on a rotatable mount with a vertical axis at the center of M. S′ and L′ are positions corresponding to S and L for the determination of the unreflected brightness of the image of S. The locations of adjusting devices and of pinhole diaphragms for alignment testing are not shown.

Fig. 2
Fig. 2

Polarization produced by reflection from tungsten at room temperature for angles of incidence approximating the angle of principal incidence.

Fig. 3
Fig. 3

Schematic drawing, greatly exaggerated, to show how (A) a small lack of planeness need not interfere with accurate measurements, and (B) too great a lack of planeness may result “as it were” in radiation holes in the beam entering the optical pyrometer.