 | The petals of a red rose are much brighter than its leaves by day, but the leaves are brighter at twilight! |
| | After your eyes have adapted, you might see objects at night. But they appear to have no color. |
| | You notice a dim star in your peripheral vision, but when you look directly at it, it disappears! |
|
| When gaurding agains a stealthy approach, the person on patrol is advised to watch with peripheral vision. |
| | After a long time of dark adaptation, you can see large objects, but not fine detail. |
| | If you are examining a detailed object with reds, greens and intense blue details, the blue will be less distinct. |
|
| Ship captains and airline pilots can see outside better at night if their instrument panels are red. |
| | White light and a spectral color produce a color. But that perceived color can be made in many different ways. |
| | Two light sources appear equally white. Yet a colored object may be distinctly different in color in their light. |
|
| Why is a candle flame yellow? |
| | Why is the sky blue? |
| | Why is the sunset red? |
|