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Item Type Article
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AN00150430-00000038-0288  
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Title
Title 輝度の加法性について 色彩スケール論 3  
Kana キド ノ カホウセイ ニ ツイテ シキサイ スケールロン 3  
Romanization Kido no kahosei ni tsuite shikisai sukeruron 3  
Other Title
Title On the additivity law of luminance : treatimes on color scales 3  
Kana  
Romanization  
Creator
Name 印東, 太郎  
Kana インドウ, タロウ  
Romanization Indo, Taro  
Affiliation 慶應義塾大学  
Affiliation (Translated)  
Role  
Link  
Edition
 
Place
東京  
Publisher
Name 三田哲學會  
Kana ミタ テツガクカイ  
Romanization Mita tetsugakukai  
Date
Issued (from:yyyy) 1960  
Issued (to:yyyy)  
Created (yyyy-mm-dd)  
Updated (yyyy-mm-dd)  
Captured (yyyy-mm-dd)  
Physical description
 
Source Title
Name 哲學  
Name (Translated)  
Volume  
Issue 38  
Year 1960  
Month 11  
Start page 281  
End page 306  
ISSN
05632099  
ISBN
 
DOI
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JaLCDOI
NII Article ID
 
Ichushi ID
 
Other ID
 
Doctoral dissertation
Dissertation Number  
Date of granted  
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Degree grantor  
Abstract
As one of the treatises in a continued series making inquiries into psychological problems involved in photometry and colorimetry, the present article provided a detailed account of all the postulates inherent in the present definition of the psychophysical concept: light. In regard to the C.I.E. luminosity curve, discussions were made about individual differences in its source data, the psychophysical procedures employed, restrictions in the observational conditions and so on, but special emphasis is laid on the role played by Abney's law, i.e., the additivity of luminance. Hence, results of the recent experiments made by MacAdam, Sperling, Fedorov etc., which concern directly or indirectly with the additivity assumption, were reviewed with the conclusions as follows. If Abney's law holds at all, it does only under luminance matches by the flicker method. Direct comparison methods do not consistently support the precise additivity of luminance The additivity principle, however, underlies all the present systems of photometry and colorimetry. Nevertheless, the flicker method could not reasonably be accepted as the sole basis for photometric meaurements to the exclusion of direct observations. Though useful, the flicker photometry is a secondary procedure in the sense that it is less closely related to ordinary conditions of observing colors. Photometry and colorimetry have served more than thirty years for practical purposes with no serious trouble, which would indicate that the deviations from additivity be of the magnitude that can be tolerated in ordinary situations where colors are under direct observation but no direct comparison is involved. Hence, textbooks are warranted in taking the additivity principle for granted. From the viewpoint of psychophysics, howe, it might be of importance to make clear the abney's law has been established accurately only by the flicker method. It was argued that luminance is ultimately based on the determination of the equality in brightness and remains to be the lower metric of brightness even when it is defined with internal consistency. Higher metric should answer the question by how many times one brightness differs from another.
 
Table of contents
一. 緒言
二. 問題の所在
三. 加法性に関する実験
四. 結語
 
Keyword
 
NDC
 
Note
横山松三郎先生古稀記念論文集
 
Language
日本語  
Type of resource
text  
Genre
Journal Article  
Text version
publisher  
131.113.194.249
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Last modified date
Aug 24, 2010 09:00:00  
Creation date
Aug 24, 2010 09:00:00  
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History
 
Index
/ Public / Faculty of Letters / Philosophy / 38 (196011)
 
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