1. Diffraction Efficiency as a Function of Exposure at Two Different Construction and Reconstruction Wavelengths For Bleached Holograms

   • Sanjay Kumar
   • K. Singh

   OriginalPaper 01 March 1992 Pages: 1 - 6

2. Embossed Holograms

   • V. N. Sankaranarayanan
   • S. Ramakrishnan
   • S. K. Seshadri

   OriginalPaper 01 March 1992 Pages: 7 - 10

3. Optical Characterisation of Pigments for Colour Prediction in Compact Powders

   • H. S. Shah
   • M. S. Roy
   • R. S. Gandhi

   OriginalPaper 01 March 1992 Pages: 11 - 20

4. Optical Investigations on Mg_x Zn_1-x SO₄ 7H₂O Mixed Crystals and Mixed Salts

   • K. Jayakumari
   • C. Mahadevan

   Short Communication 01 March 1992 Pages: 21 - 23