1976
1976
Contents  
PageNo.
 
DIVISION OF STANDARDS
1. Standards     2-15
1.1 Length Standards     2-3
1.2 Mass Standards     3
1 .3 Photometric and Radiometric Standards     4
1.4 Temperature standards     4-6
1.5 Force Standard     6-7
1.6 Low Pressure and High Pressure Standards     7-8
1.7 Acoustical Standards     8-10
1.8 Time and Frequency Standards     10-12
1.9 Electrical and Electronic Standards     12-15
1.9.1 Standards of DC voltage and Resistance     12-13
1.9.2 Realisation of the Unit or DC Voltage through Josephson Effect     13
1.9.3 Capacitance & Inductance Standards     13-14
1.9.4 AC & High Frequency Standards     14
1.9.5 Microwave Standards     14
2. Calibration & Testing
2.1 Length Metrology     15-16
2.2 Mass, Volume, and Hydrometers     16
2.3 Photometry, Colorimetry and Radiometry     17
2.4 Heat     17
2.5 Engineering Materials     18
2.6 Low Pressure and High Pressure     18-19
2.7 Acoustics     19
2.8 DC Calibration     19-20
2.9 AC & High Frequency Calibration     20
2.10 Microwave Calibration & Testing     21
2.11 Test, evaluation and Calibration Centre     21-23
Table- Statement of Receipts on account of Calibration and Testing Work done by the Division of Standards during 1976-77    
DIVISION OF SPECIALIZED TECHNIQUES
1. Specialised Techniques Group     25-40
1.1 Analytical Chemistry Section     26-28
1.2 Spectro-Chemical Analysis Section     28-29
l.3 Infrared Section     29-31
1.4 X-ray Diffraction and Fluorescence Section     31-32
1.5 Electron Microscopy and Electron Diffraction Section     32-33
1.6 X-ray Diffraction Topography Section     34-36
1.7 Electron Paramagnetic Resonance Section     36
1.8 Mossbauer Spectroscopy     36
1.9 Standard Reference Materials     37
1.10 Sulfamphthalein indicators     37-39
Table-ll Colour changes of Phenol-and Sulfamphthalein Indicators Synthesised and Purified at the NPL    
1.11 Electronics Service Unit     39-40
2. Cryogenics Group
2.1 Cryo Technical Services     41
2.2 Cryo-Properties of Materials     41
2.3 Cryogenic Plants and Facilities     41-42
2.4 Cryo-probes for Medical Applications     42
2.5 Cryo-chemical Techniques for Small Powder Preparation     42
2.6 Superconducting Materials and Systems     43-44
2.7 Theoretical Investigations in Low Temperature Physics     44
2.8 Josephson Tunnelling     44-45
3. Solar Energy Group
Table-III Receipts from the Testing Work done by the Division of Specialised Techniques     28
DIVISION OF MATERIALS
1. Semiconductor Materials and Devices     47-48
1.1 Silicon Technology     47-48
1.2 Luminescent Materials and Devices     48
2. Magnetic Materials     48-50
3. Ferroelectric & Dielectric Materials and Devices     51-55
3.1 Piezoelectric Ceramic Materials     51
Table-iv Typical Properties of NPLZT-6 Piezoelectric Material     51
3.2 Lithium Niobate Single Crystals     52
3.3 High Voltage Ceramic Capacitors     52
3.4 Technical Ceramics     52-53
3.5 Ultrasonic Instrumentation and Piezoelectric Devices     53-55
4. Carbon Products
4.1 Carbon Fibres     56-57
4.2 Arc Carbons     57
4.3 Midget Electrodes     57
4.4 Electrographitized Grades of Brushes     57
4.5 Carbon Mixes     57
4.6 Carbon Microphone Granules     58
DIVISION OF RADIO SCIENCE
1. Groundwater Facilities for Environment Monitoring     59-60
2. Rocket and Satellite Experiments     61-62
3. Radio and Space Services     63-64
4. Aeronomy     65-67
5. Environmental Hazards     67-69
DEVELOPMENTAL PROJECTS
1. Microwaves and Display Tube Technology     70-72
1.1 Design. Development and Batch-production or Microwave Components, Circuits and Instruments     70-71
1.2 Fabrication & Reconditioning of TV Picture Tubes and Special Purpose Cathode Ray Tubes     71
1.3 3-D Photographic Displays     71-72
2. Electrophotographic Machines     72-74
3. Thin Film Devices     74--75
4. Liquid Crystal Devices     76-77
4.1 Electro-optical Display Devices     75-76
4.2 Light Crystal Light Valves     77
EXPERIMENTAL PILOT PLANTS
1. Pilot & Demonstration Plant in Hydrostatic Extrusion & Material Synthesis     78-80
2. Glass Technology development and Production Unit     80-81
3. Developmental-Cum-Production of Electronic Components Unit     81
4. Carbon Pilot Plant     81-82
OTHER R & D Activities
1. Design and Development of Optical Systems     83
2. Instrumentation Services     83-84
3. Sensory Aids for the Blind     84
APPENDICES
 
International Symposium on Fibres and Composites 85-87
National Seminar on Time & Frequency 87-89
Central Workshop 90
Library 91
Krishnan Memorial Lecture-1976 92-93
NPL Merit Awards-1976 94-95
Other Honours and Awards 95
Papers Published 96-104
Papers Presented at Symposia, Seminars & Conferences 105-114
Indian Patents Filed (during 1976) 115
Indian Patents Accepted (during 1976) 116-117
Indian Patents Sealed (during 1976) 118-119
Processes Released for Commercialisation (during 1976) 120-121
Processes which have gone into Production (during 1976) 122
Representation on ISI Committees 123-130
Executive Committee (As on 31st December, 1976) 131
Receipts on account of Fabrication, Supply and Servicing of Instruments etc. during 1976-77 132
Staff strength (as on lst June 1976) 133
Expenditure ( 1976-77) 134
Errata 135

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