If we think first of pure spectral colours consisting of a single wavelength of light, then there’s a simple, obvious answer: ...

A new viral optical illusion has divided the internet once against. For this simple yet reflective challenge, you need to see the image above - which reports completely different colours – for some it ...

“How can we be sure that people see the same color when they look at something?” – Henrietta, age 12, Market Harborough, UK In fact, we can’t be so sure that we do all see the same colors. What colors ...