Hummingbird Feeders. Hummingbirds get the energy they need to maintain their astonishing metabolism primarily from flower nectar and the sugar water they find at feeders (here's the recipe). Think of them as miniature flycatchers, and sugar is just the fuel for getting their real nourishment.
afÂ·terÂ·imÂ·age. n. A visual image that persists after the visual stimulus causing it has ceased to act. Also called photogene. (ËÉËftÉrËÉªmÉªdÊ).
When light hits these, they are âdepolarisedâ, and have to be repolarised before they can be used again. So, when you close your eyes you can see an after-image of the light while they repolarise. If you move your eyes around, the image should move around with them, and fade after a few seconds.