Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

A New Form of Thermoelectric Recording Pyrheliometer

Not Accessible

Your library or personal account may give you access

Abstract

SYNOPSIS

A thermopile consisting of 50 couples is made from 6Au-40Pd with 90Pt-10Rh wire 0.0016 inch in diameter, by electrically fusing the junctions. Alternate junctions are attached to, but electrically insulated from, two thin concentric copper rings. The inner ring has its upper surface painted black; the outer ring, white. Details of construction are given.

When exposed to solar radiation, the excess in temperature of the junctions attached to the blackened ring over those attached to the whitened ring produces an electric current, the voltage of which is very nearly proportional to the intensity of the solar radiation. With a solar radiation intensity of one gram-calory per minute per square centimeter of surface the current generated has a voltage of between 9 and 10 millivolts.

A Type RM Engelhard recording voltmeter is employed to obtain continuous records of the solar radiation intensity. A sample record and illustrations of the thermopile are given.

© 1923 Optical Society of America

Full Article  |  PDF Article
More Like This
On a Simple Method of Recording the Total and Partial Intensities of Solar Radiation

Ladislaus Gorczyński
J. Opt. Soc. Am. 9(4) 455-464 (1924)

Disappearance of the Filament and Diffraction Effects in Improved Forms of an Optical Pyrometer1

C. O. Fairchild and W. H. Hoover
J. Opt. Soc. Am. 7(7) 543-579 (1923)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved