Journal of the Illuminating Engineering Institute of Japan

Online ISSN : 2185-1506
Print ISSN : 0019-2341
ISSN-L : 0019-2341

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Volume 34, Issue 7

Displaying 1-4 of 4 articles from this issue

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A Method of Calculating Direct Illumination due to Light from Perfectly Diffusing Polygonal Surface with Uniform Brightness

T. SASAKI

1950Volume 34Issue 7 Pages 226-231
Published: July 25, 1950
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.2150/jieij1917.34.226

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The author shows how easily the direct illumination due to perfectly diffusing polygonal source of uniform brighthness can be calculated analytically with a method proposed by him. A table in appendix and a diagram (see Fig. 5.), which assist in carrying out numerical calculation of the illumination in any cases, are given in this paper. As illustration of this method, examples are described and the results are checked by the method of-contour integration method.

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Starting of Fluoresent Lamp at the Low Line voltage

Katsutoshi Ando, Bunichi Matsuoka

1950Volume 34Issue 7 Pages 232-237
Published: July 25, 1950
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.2150/jieij1917.34.232

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[title in Japanese]

[in Japanese], [in Japanese], [in Japanese]

1950Volume 34Issue 7 Pages 243-246
Published: July 25, 1950
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.2150/jieij1917.34.243

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[title in Japanese]

1950Volume 34Issue 7 Pages 247-248
Published: July 25, 1950
Released on J-STAGE: July 19, 2011

DOIhttps://doi.org/10.2150/jieij1917.34.247

JOURNAL FREE ACCESS

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