Science and Technology 2019: Inventions and Discoveries11

Science and Technology 2019: Inventions and Discoveries11

he developed ink has features of changing the colour of pigment after the notes are printed.

- The ink shows white colour in ambient light. It turns into a red colour when it is exposed to UV light and when UV source is switched off it turns into a green colour.

- The reason behind the development of new ink is duplication of Rs 500 and Rs 2000 notes. As per RBI annual report (2018-19), the risk of duplication of Rs 500 and Rs 2000 notes is higher. Rs 500 duplication accounts for 12% and Rs 2000 to 21.9%.