Humans didn’t discover the presence of infrared light until well into the 1800s, and it’s taken us significantly longer to begin to crack what this portion of the visible light spectrum means. But ...

Imagine stepping into a world where hidden colours and patterns come to life—a realm of vibrant UV signals and secret messages invisible to human eyes. While human vision is limited to the visible ...

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 ...