You can keep switching from eye to eye to see what a difference this small flame made on your night vision.” Now, wait until I extinguish this flame, but when I do, you’re going to move your eyepatch to your other eye and look around. Then the eye that was still adjusted to the darkness could still see well, and he could overtake his enemies. Whenever he saw a cannon flash during a night raid, instead of being blinded, he simply switched his eyepatch over to his other eye. That eye under the eyepatch became well-adjusted to the darkness.
So even though he had two perfectly-working eyes, he decided to wear an eyepatch over one of his eyes, night and day. But this was a smart pirate captain he probably went to (insert your camp/outdoor education program name here) when he was a kid, where he learned a few things about night vision. While they waited for their eyes to readjust to the darkness, they were susceptible to enemy takeover. Whenever a cannonball was launched, a bright light from the cannon flashed and temporarily blinded every pirate who saw the light. Even when they fought enemy pirates, they preferred nighttime because they had developed a strong sense of night vision … at least until the cannons went off. The crew on his ship liked to do their raids at night, because the townsfolk were often asleep and it was easier to get away. “Long ago, when pirates ruled the seven seas, there was one pirate captain who liked to pillage and loot just as much as the rest of them. With their uncovered eye, they will look at the small flame while you tell a story like this: When they return to camp, they can take their paper out in the light and see if they guessed the color correctly.Īnother experiment to show how night vision can be affected starts off with acting like pirates-no “aargs” or “ahoys” necessary! Have every hiker make an “eyepatch” with one of their hands covering the eye of their choice. Ask them to guess what color they think it is, and then put it in a pocket or safe place so that they don’t litter on the trail. Give each hiker a small piece of colored paper. This experiment will help hikers tell if their cones are being used at all during the night hike. Rods help us see in low-light situations, making them important for night hikes. This is a good opportunity to talk about two of the photoreceptors in our eyes: rods and cones.
Many people are surprised at the realization that they are colorblind in the dark. Materials: small squares of colored paper Change one or two of the words and see if they notice. Test the hike participants’ hearing by walking around them while saying nursery rhymes and see if they can tell what you’re saying. That means they can focus their ears the same way to hear better in that direction, or they can point them in opposite directions to hear more of their entire surroundings.Ĭreate your own “deer ears” by shaping your hands around your human ears.
Their ears also often can move independently. Whether bats, coyotes, deer, or rabbits, many of these animals have something in common: their ears! Their ears are big so they can hear better, which compensates for their reduced ability to see at night. Talk about all of the nocturnal creatures and crepuscular creatures (that means animals that are most active at twilight) the group can think of. Materials: everyone needs their own set of hands and ears
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