The colors that are hardest to see in the dark are blue and green.
This is because our eyes are more sensitive to wavelengths of light that are closer to the red end of the visible spectrum. This is why we often see things in shades of red, orange, and yellow when it's dark.
Blue and green light have shorter wavelengths, which our eyes are less sensitive to in low-light conditions.
Here are some practical examples:
- Night vision goggles: These devices enhance our ability to see in the dark by amplifying the amount of light that reaches our eyes. They often use a green or white phosphor to display the image, which is easier to see in low-light conditions than blue or green.
- Traffic lights: Red traffic lights are easier to see at night than green traffic lights because the longer wavelengths of red light are more easily perceived by our eyes in low-light conditions.
