Open AccessExamination of Security Features in Nepali Currency of Denomination Rs. 500 and Rs. 1000 Using Video Spectral Comparator-6000
Author(s) -
Ram Ashish Giri,
Prakash C. Bhattarai,
Shanker Prasad Chimouriya,
Bal Ram Ghimire
Publication year - 2021
Publication title -
journal of nepal physical society/journal of nepali physical society
Language(s) - English
Resource type - Journals
eISSN - 2738-9537
pISSN - 2392-473X
DOI - 10.3126/jnphyssoc.v7i4.42929
Subject(s) - nepali , computer science , feature (linguistics) , currency , series (stratigraphy) , artificial intelligence , pattern recognition (psychology) , geology , art , literature , economics , linguistics , paleontology , philosophy , monetary economics
In this work, we have studied security features of Nepali currencies of denomination Rs. 500 and Rs. 1000 of recent two series with the help of Video Spectral Comparator-6000. During examination, mostly ultraviolet, normal, transmitted and oblique light are used. We found nine different security features like fluorescence, water mark, micro text, security thread, intaglio print, see through registor, emboss, optically variable ink and latent image in this work. One feature, latent image is found to be completely removed in new series of both Rs. 500 and Rs. 1000 whereas new important security feature optically variable ink is introduced in new series of Rs. 500. Besides these two features, some are unchanged while some are modified.