In the case of the common and well–studied blue tit bird, the male and female appear visually identical to the human eye. However, when viewed under UV light, males have UV-reflectant crown patches.

This future display tech uses ultraviolet LEDs to excite a series of quantum dots. Here's why this could be the next big ...

So, what makes eyes look red in photographs? The answer is simple; it all concerns the camera flash reflecting off the eye at a specific wavelength. The eyes enable us to see the world ... The red-eye ...

Blue light is a specific kind of light with a short wavelength. This type of light ... These may help limit the amount of blue light exposure your eyes get every day. Researchers are still working ...

One video shared by @sleeptints on Instagram explained there's a 'good reason' why celebrities are wearing red tinted glasses ...

Most people are trichromatic, meaning the three types of cone cells in their eyes are sensitive to three wavelengths of light – red, blue, and green. The combination of signals from these three ...

Dermatologists explain how red light therapy can help with fine lines, wrinkles, acne and more. Plus the benefits of other ...

Curious as to whether a light therapy mask can revitalise your skin? Here we look at the benefits of masking your ...

with Red & Green launching in 1996 and Red & Blue following internationally a few years later. Despite their age, people still adore the Gen 1 titles and will eagerly return for a Nuzlocke run at ...

Culturally, blue water ... than blue wavelengths. As light passes through water, the red light is absorbed, and the blue light gets scattered, which is also apparent to our eyes.

You might have noticed more celebs wearing red glasses and Simon Cowell has explained why he likes donning the accessory.

Having red eyes can become a bothersome issue that can result from various underlying causes including allergies, dry eyes, or exhaustion. Though there are abundant home remedies that could help ...