People love the rainbow of ROYGBIV colors: red, orange, yellow, green, blue, indigo and violet. Human eyes perceive visible light as this array of colors. You may notice that some colors you can ...

A PERUSAL of the articles which have appeared in your journal on this subject (NATURE, vol. lxxxiii., pp. 48, 68, 188, 487, and vol. lxxxiv., p. 87) leads me to ask if the spectrum of water has ever ...

Scientists have demonstrated a technique that allows humans to perceive a previously unseen, intensely saturated blue green ...

THE physical theory, as founded by Young and perfected by his successors, shows how to ascertain the composition of the light reflected from a plate of given material and thickness when the incident ...

We need to maintain the balance of colours in our body, therapists tell Priti Agrawal, as they explain the healing powers of the spectrum We need to maintain the balance of colours in our body, ...