There is a lot more to light than what mere human eyes can detect, but a device in your pocket can help you see beyond your biological limits.
Our eyes can only detect colors of light that we see as a rainbow, primarily shades of red, orange, yellow, green, blue, indigo, and violet.
And while our naked eyes can’t pick up on infrared light, the sensors in your phones and digital cameras can — essentially making the invisible visible. To see the infrared light that your TV remote transmits, shine the remote at your phone camera and press a button.
Rebecca Harrington 