Viruses exist in a realm where there is no light and colour has no meaning. In their COVID-19 depictions, designers, illustrators and communicators make some highly creative and evocative decisions.
Researchers can more easily compare heated rocks from different studies and areas.
Colour blind people are really good at spotting things that are far away, and they are better than most people at telling things apart by their shape.
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Some colour blind people only have two kinds of cone cell in their eye. Others have three kinds, but the cones do not pick up the same light waves as the cone cells in most people’s eyes do.
From Superman to Jurassic Park, green screen technology is what makes the jaw-dropping effects you see in blockbuster movies possible. But how does it work?
Ted Gibson, Massachusetts Institute of Technology (MIT) and Bevil R. Conway, National Institutes of Health
People across the globe all see millions of distinct colors. But the terms we use to describe them vary across cultures. New cognitive science research suggests it’s about what we want to communicate.
Rainbows get their round shape from a process called reflection.
Flickr/Luigi Mengato