Difference between revisions of "Lumen"

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1) The central open tube in a plant fiber or cell.  
 
1) The central open tube in a plant fiber or cell.  
  
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2) The unit of light intensity as specified by the International System (SI).  One lumen equals the amount of light produced by one [http://cameo.mfa.org/materials/fullrecord.asp?name=candela candela].  In international (metric) units, illumination is measured as [http://cameo.mfa.org/materials/fullrecord.asp?name=lux lux] which is defined as one lumen per square meter.  In English units, light is measured by [http://cameo.mfa.org/materials/fullrecord.asp?name=foot-candle foot-candles] which is defined as one lumen per square foot.  Since lumen, or light flux, is the same in both cases, one foot-candle is about 10 lux (9.4).
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2) The unit of light intensity as specified by the International System (SI).  One lumen equals the amount of light produced by one [[candela]].  In international (metric) units, illumination is measured as [[lux]] which is defined as one lumen per square meter.  In English units, light is measured by [[foot-candle|foot-candles]] which is defined as one lumen per square foot.  Since lumen, or light flux, is the same in both cases, one foot-candle is about 10 lux (9.4).
  
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== Authority ==
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==Resources and Citations==
  
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* Margaret Ellis (ed.), ''A Glossary of Paper Conservation Terms'', Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
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* ''A Glossary of Paper Conservation Terms'', Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
  
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* ''The American Heritage Dictionary'' or ''Encarta'', ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
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* ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998
  
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* Random House, Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
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* Random House, ''Webster's Encyclopedic Unabridged Dictionary of the English Language'', Grammercy Book, New York, 1997
  
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* Mary-Lou Florian, Dale Paul Kronkright, Ruth E. Norton, Mary-Lou Florian, Dale Paul Kronkright, Ruth E. Norton, ''The Conservation of Artifacts Made from Plant Materials'', The Getty Conservation Institute, Los Angeles, 1990
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* Mary-Lou Florian, Dale Paul Kronkright, Ruth E. Norton, ''The Conservation of Artifacts Made from Plant Materials'', The Getty Conservation Institute, Los Angeles, 1990
  
  
  
 
[[Category:Materials database]]
 
[[Category:Materials database]]

Latest revision as of 14:20, 26 September 2022

Description

1) The central open tube in a plant fiber or cell.

2) The unit of light intensity as specified by the International System (SI). One lumen equals the amount of light produced by one Candela. In international (metric) units, illumination is measured as Lux which is defined as one lumen per square meter. In English units, light is measured by foot-candles which is defined as one lumen per square foot. Since lumen, or light flux, is the same in both cases, one foot-candle is about 10 lux (9.4).

Resources and Citations

  • A Glossary of Paper Conservation Terms, Margaret Ellis (ed.), Conservation Center of the Institute of Fine Arts, New York City, 1998
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • Mary-Lou Florian, Dale Paul Kronkright, Ruth E. Norton, The Conservation of Artifacts Made from Plant Materials, The Getty Conservation Institute, Los Angeles, 1990

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