Can exposure to the sun or other specific types of light help those dealing with chronic psoriasis? We took a look at the science behind phototherapy, also known as light therapy, to see how the ...

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

From pointing to animated arm movements and nodding, people regularly employ gestures to accompany and create language. Now, it’s been suggested that humans can also understand sign language used by ...