Browsing: Infrared

For elephants, feet are sensory organs.Martin Harvey, Getty Images It’s pretty obvious that dogs have sharper ears and cats a keener sense of smell than we do. But as powerful these senses are, they are merely keener versions of the ones we humans possess. The animal kingdom also boast some senses that are arguably more […]

There is more to the world than meets the human eye, a fact that hit home for the 18th-century astronomer Sir Frederick William Herschel when he discovered infrared light—a wavelength of light that lies just outside the visible portion of the electromagnetic spectrum. We can feel its heat, but we can’t see the light—not without […]