Can rainbows form in a circle? Fun facts on the physics of rainbows

Each rainbow is personal – the rainbow you see isn’t exactly the same rainbow the next person sees. It’s all in the eye of the beholder.

Partha Chowdhury, Professor of Physics, UMass Lowell • conversation
April 24, 2023 • ~6 min

Do you see red like I see red?

Neuroscientists tackling the age-old question of whether perceptions of color hold from one person to the next are coming up with some interesting answers.

Danny Garside, Visiting Fellow in Sensation, Cognition & Action, National Institutes of Health • conversation
Feb. 5, 2021 • ~8 min

Do dogs really see in just black and white?

Your faithful friend's view of the world is different than yours, but maybe not in the way you imagine.

Nancy Dreschel, Associate Teaching Professor of Small Animal Science, Pennsylvania State University • conversation
July 2, 2020 • ~6 min

Blue dye from red beets – chemists devise a new pigment option

A simple chemical reaction turns the red pigment of beets into a new, nontoxic blue dye.

Erick Leite Bastos, Associate Professor of Chemistry, Universidade de São Paulo • conversation
April 3, 2020 • ~5 min

Blue dye from red beets – chemists devise a safer new pigment option

A simple chemical reaction turns the red pigment of beets into a new, nontoxic blue dye.

Erick Leite Bastos, Associate Professor of Chemistry, Universidade de São Paulo • conversation
April 3, 2020 • ~5 min

Blue dye from red beets

Chemists have turned the red pigment of beets into a new, nontoxic blue pigment.

Erick Leite Bastos, Associate Professor of Chemistry, Universidade de São Paulo • conversation
April 3, 2020 • ~5 min

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