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IS 1885-16-1 (1968): Electrotechnical Vocabulary, Part XVI: Lighting - Section I General Aspects [ETD 1: Basic Electrotechnical Standards]

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IS 1885-16-1 (1968): Electrotechnical Vocabulary, Part XVI: Lighting - Section I General Aspects [ETD 1: Basic Electrotechnical Standards] इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान का अधकार, जी का अधकार” “परा को छोड न 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 1885-16-1 (1968): Electrotechnical Vocabulary, Part XVI: Lighting - Section I General Aspects [ETD 1: Basic Electrotechnical Standards] “ान $ एक न भारत का नमण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “ान एक ऐसा खजाना > जो कभी चराया नह जा सकताह ै”ै Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” 1 .::, J ., IS : 1885( Part XV1/Sec I ) -1968 1 Indian Standard ELECT~OTECHNICAL VOCABULARY PART XVI LIGHTING Section I General Aspects ( Third Reprint AUGUST 1990) ‘. *“ [JJ.)C 001”4: 628”9/97 .-, ,, ‘.. @ Copyright 1968 .. BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW’ DELHI 110002 Gr 10 November 1968 IS: 1SS5( Part XVI/See 1 ) - 196S Indian Standard ELECTROTECHNICAL VOCAIWLARY PART ‘XVI LIGHTING Section I General Aspects Electrotechnical Standards Sectional Cornmi~tec, ETDC 1 I Chairman Rsprsssnting SHRST. V. BALAKSUSNNAN Bbarat Hea~ Electrical Ltd, Hardwar Members I ADDMTONALCHIEFENOIXEER DirectorateGeneralof Posts& Telegraphs( Depart- mentof communications) DIRECTOROF TULE~RAPHS (L) ( Alt.na& ) SSSRIG. K. AHUJA Inspection Wing, DirectorateGeneral of Su plies & Disposals ( Ministry of supply, ?echnical Development & Materisds Planning) SHRIA. S., NAGARKAT-IT( Altertsa&) SHRSv. w. cHBKauRKAR Indi~lcu~ctrical Mans&acturet# @xiation, SHRXY. P. KAUSHIK( Ahemu&) ~C1’OR Electronics and Radar Development Establishment ( Ministry of Defence ), Bangalore &O?IG. D. JO~MUM Primary Cells and Batteriks Sectional Committee, ETDC 10, 1S1; and%xmclary Cells and Batteries Sectional Committee, ETDC 11, 1S1 Ssnu S. N. MURKRP National Test House, Calcutta PROFR. C. NARAYANAN General Nomenclature and Symbols Subcommittee, ETDC 1:3, 1S1 Smu A. R. NARAYANARAO Institution of Engineesa ( India), Calcutta %u H. V. F.JARAYANA RAO central Water & Power Comsoisskm ( Power Wing ) SHR]S. N. VINZE( Alternate) SHRSU. K. PATWARDHAN Transformers Sectional Cknnsnittcr+ETDC 16, 1S1 Smu R. RADSiAKRISHNAN Central Eiectro-Chemical Rese@l Institute ( CSIR ), Karaihs~ SHRSH. N. VENKOBARAO( Altsrnate) Ssms K. RAMANATHAN ‘ *VY Electrical ( India) Ltd, Bhopal SHsuS. K. BHATIA( Alternats) SHRSv. v. RAo Departmentof Communication ( Wireless . arming and Co-ordination Wing ) SHRSA, P. SEETSSAPATHY Switchgea.r and Controlgear Sectional Camnittce, ETDC 17, 1S1; anA POWW Frequency and voltages Subcommittee, ETDC 1:1, 1S1 I SNRIR. K. TANDAN National Physical Laboratory ( CSIR ), New Delhi ( Gmtinad on/Ja#s2:) ,. BUREAU OF INDIAN ‘STANDARDS MANAK BHAVAN, 9 BAHAl)UR SHAH ZAFAK+%$ARG NEW DELI-II 110002 -. IS:l$85(PM XVI/*Cl)=W68 ( Coaiimdfiomj%sgu1) Mmbas &ia#usmf& Snr S. THIRIWENKATACWARX ‘lWfTn#C 24~#’m*t ‘Ctiond amtitt=” $&I V. VENUOOWJAN Insulator and Acceasoriw Scct@al Comnuttee, ETDC 3, 1S1 SHRI~. S. ZA= Rotating Machinery sectional Committee, ETDC 15, 1S1 SHRIY. S. VIJNKATMWMRAN, DirectorGeneral,1S1( Ex-@xb Mmikr) Director ( Elcc tech ) ( Secwtary: Illuminating Engineering Sectional Committee, ETDC 45 Chaimw SnRI N. B. SATAnAWALA Railway Board ( Ministry of Railway9 ) Manbsn ADDITIONAL Cs-naF ENCXWER Central Public Works Department ( ELBC) Smu B. GUPTASAIWA[ Aitsmats SIiRIR. R. J%ADA i he Ahmcdabad M.illownem’ Association, Ahmcciabad DR G. N. BADAMI Cent;/rabi~ning Rcacarch Station (_!3SIR), SQ-LDRH. S. BHATIA Directorate of Tccbnical Dcvclopmcnt & Production ( Air) ( Ministry of Dcfence ), New Delhi SHR1N. C. GUHA( Altamah ) SHRXJ. P. J. BILLIMORKA Central nxbfic work Department ( At’*itect. Wi ) SHRIP. BOSE EasternT egional ElectricalContractors’Association ( India) Ltd,Calcutta SHRXL. N. M THUR ( Al&rnati) SHRIB. CUNNINGJAM GencrrcuEl#ric Company of India Private Ltd, SHRI D. K. DMS ( Afti ) SHRXD. S. DtXHI Bajaj Electrical Ltd, Ftemba} SHRI S. U. BHOJWANI ( Al&matKJ Philips India Ltd, Calcutta SHRXM. P. GUPTA SHIUP. N. SRrNXVASAN( Aftem@) SHRIH. N. JAQTtANI Directorate General Factory Advici service and Labour Institutes ( Ministry of Labour, Bmploy- mcnt & Rehabilitation), Bornbay S~RI D. M. JAAUNOAR The Bo bay Electric Supply & Transport Under dg, Bombav SIXR1H. B. NAIK( Af&md ) SHRIA. MITRA 1 DiicNtur&w.G&lcrd of Suppli-a & Dab SKR1J. N. Vu ( A&na& ) SHRXB. K. Mumnrqaa NationalTat Ho&, Ca@tta SHRXT. K. KUNDU( Al* ) SHRKJ. R. NAHm - ~e ml Lighting Industria Private Ltd, SXRIJAYANTR. PARI HindcoLig~tiagI@mtrks L@ -Y , IS: 1885 ( Part XVI/See 1)- 1968 CONTENTS PAGE o. FOREWORD . ... ... ... 4 1. SCOPE . ... ,.. >.. 4 2. RADIATION . ... ... ... 5 3. PHOTOMETRIC QUANTITIES AND UNITS ... ... 14 4. CALORIMETRY: FUNDAMENTAL CONCEPTSAND QUANTITIES 21 5. OPTICAL PROPERTIES OF MATTER ... ... .,. 28 6. EYE ANDVISION ... ... ... ,.. 34 7. RAD1OMETRIC,PHOTOMETRICAND COLORXMETRICMEASURE- MENTS: PHYSICALRECEPTORS .. ... ... 42 8. THE PRODUCTIONOF LIGHT ... ,.. ... 46 INDEX ... ... ,.. ... ... 49 “J -. —mr--w- ——---- ,, II~m- -.-—- IS: 1885 ( Part XVI/See 1 ) -1968 [ndian Standard I IWECTROTECHNICAL VOCABULARY PART XVI LIGHTING Section I General Aspects ! ) I O. FOREWORD 0.1 This Indian Standard was adopted by the Indian Standards Institu- tion on 16 January 1968, after the draft iinalized by the Electrotechnical Standards Sqctional Committee in consultation with the Illuminating Engineering Sectional Committee had been approved by the Electrotech- nical Division Council. 0.2 This standard ( Part XVI/Section 1 ) is based, to a large extent, upon Publication No. 50 (45 ) on ‘ International electrotechnical vocabulary’ i issued by the International Electrotechnical Commission. Thk section deah with the general aspects of lighting, covering terms relating to radiation, calorimetry, optical properties of matter, photometric quantities and units, eye and vision and the production of light. Section 2 of this standard covers terms relating to Iuminaires and lighting for traffic and signaling and Section 3 deals with terms relating to lamps and auxiliaries. 0.3 A compromise has been made between absolute precision and simplicity in order to arrive at the most apt ddinitions. The principal object of this terminology is to provide definitions which are sufficiently clear so that each term can be understood with the same meaning in the electronic field. Thus, it may sometimes be felt that the definitions used in this standard are not sui%ciently precise, do not include all cases, \ do not take account of certain exceptions or are not identical with those \ which may be found in other publications designed with other objects and I for @her readers. Such imperfections are inevitable and sometimes have ‘ to be accepted in the interest of simplicity and clarity. 0.4 The elcctrotechnical vocabulary m being prepared in several parts, k each having one or more sections. ! 1. SCOPE 1,1 TM standard ( Part XVI/Section 1 ) covers definitions of terms used in the fie!d of lighting relating to the general aspects, namely, radiation, calorimetry, photometric quantities and units, optical properties of matter eye and vision and the production of light. 4 -,,. ——-.—-—--’—.-—.---——–!—, ,. ,, ,, _ __ IS: 1SS5 ( Part XVI/See 1 ) - 196S 2. RADIATION 2.1 Fundamental Concepts 2.1.1 Radiation a) EmMlon or transfer of energy in the forms of electromagnetic waves or partieks. b) Electromagnetic waves or particles. No’ra— In generaf,nuclearradiationsand radio wavesare not consideredin this vocabularybut only opticalratitions, thatis, electromagneticradiations( photons) of wavelengthlying betweentheregionof transitionto X-rays ( -1 nm) and the region of transitionto radiowaves( * 1 mm). 2.1.2 Irradiation — Application of radiation to an object. 2.1.3 Monochromatic Radiation — Radiation characterized by a single. frequency. By extension, radiation of a very small range of frequency or wavelength, which can be described by stating a single frequency or wavelength. 2.1.4 Complex Radiatwn — Radiation composed of a number of monochromatic radiations. 2.1.5 Vidde Radiation ( Light) — Any radiation capable of caus~g a visual sensation directly. The wavelength limits adopted by Commi- ttee E-2. 1.2 of CIE ( Vienna 1963) for the spectral range of this radiation are 400 and 760 nm. NOTE— The limits of the spectral range of visible radiation are not welI defined and may vary according to the user. The lower limit is generally takmt between 380 and 400 nm and the upper limit between 760 and 780 nm [ 1 nanometre (nm)=10-gsn]. 2.1.6 Infrared Radiation — Radiation for which the wavelengths of the monochromatic components are greater than those for visibk radiation and less than about 1 millimetre. NOTSS— The l~mits of the spectral range of infraredradiationare not well defined and may vary according to the user. CommitteeE-2.1.2 of CIE distinguishesin this spectral range: IR-A 780to 1400 mm IR-B
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