How far away is a rainbow?

As a biologist, I am not an expert on rainbows, but I thought I knew how they work. A rainbow occurs when the sun is shining into rain, and each water droplet acts as a little spherical prism, splitting the sun’s white light into the colours of the rainbow in a process called refraction. The…

Jurassic mystery: prehistoric coloured light

Ever since the launch of the┬áDinosaurs-Live! exhibition I have been trying to think of possible ways nature could produce coloured light. Standing in front of some of the realistic animatronic dinosaurs, I had attempted to imagine standing in front of the real thing, but I got confused by the lighting. How could the real dinosaurs,…

The suspension of gravity

At the launch of the Dinosaurs Life! exhibition last night, I made the aquaintance of the amazing Maiasaura. This was a 9m long, 2.5m tall plant eating dinosaur with a toothless beak, cheek pouches, a small crest in front of the eyes and, aparently, a surprising ability to defy gravity! The exhibition features lots of…