James Rawlings does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Seeing seven colours in a rainbow is down to what we expect to see, not reality. In fact, there are many more colours in a rainbow, as our readers explain Around 1665, Isaac Newton performed ...

White light can be blinding, cold, unforgiving. Our physical reality often finds it too much as well, splitting it apart any chance it gets. Plants are green because such wavelengths of light help it ...