Abstract
Marya Kahanowicz. A new determination of the constant of the Stefan-Boltzmann law. Il Nuovo Cimento (1911–1923), volume 13, pages 142–167 (1917).
Full Text
On a New Determination of the Radiation Constant
(Marya Kalcanovicz. Una nuova determinazione della constante della legge di Stefan-Boltzman. Il nuovo Cimento, Ser. 6. Vol. 13. Fasc. 2—3. p. 142—1917.)
After a detailed historical introduction, the author gives a description of a method for determining the radiation constant, developed in the laboratory of the University of Naples. The method is based on the use of absorption
radiation of a black body by means of a blackened plate with a thermoelement soldered on. The plate stands inside a cavity, which is, as it were, a second black absorbing body; the absorbing capacity of the receiver was equal to 0.998. According to Kahanowicz’s comparison, the values of the constant \(\sigma\) (the directly obtained \((\sigma_1)\) and the values of the radiation constant corrected for diffraction \((\sigma_2)\)) are as follows:
| Author | Year | Temperature of the black body | \(\sigma_1 \times 10^{12}\) | \(\sigma_2 \times 10^{12}\) |
|---|---|---|---|---|
| Kurlbaum. | 1893 | \(100^\circ\) | 5.32 | 5.45 |
| Scheiner. | 1903 | \(1000^\circ\)—\(1100^\circ\) | 4.73 | — |
| Féry. | 1909 | \(529^\circ\)—\(1263^\circ\) | 6.3 | 6.3 |
| Bauer and Moulin. | 1910 | Solar energy | 5.7 | — |
| Valentiner. | 1910 | \(100^\circ\); \(829^\circ\)—\(1433^\circ\) | 5.35 | 5.38 |
| Féry and Drecq. | 1911 | \(1064^\circ\) | 6.51 | — |
| Gerlach. | 1912 | \(100^\circ\) | 5.863 | 5.9 |
| Puccianti. | 1912 | \(-79^\circ\)—\(191^\circ\) | 5.96 | 5.96 |
| ” | ” | ” | 6.15 | — |
| Keene. | 1913 | \(1100^\circ\) | 5.89 | — |
| Coblentz. | 1915 | \(1050^\circ\)—\(1084^\circ\) | 5.65 | 5.72 |
| Kahanowicz. | 1916 | \(250^\circ\)—\(537^\circ\) | 5.60 | 5.61 |
P. Lazarev.