Your Unanswered Questions
Unfortunately I didn't have time to answer all your questions. I've posted them here.
Spots and Floaters Seneca wanted to know "Why do people see spots and floaters". | Eye Boogers Cecilia introduced me to a new term. She wants to know "How do you get eye boogers (aka rheum)?" |
Night Vision Goggles
When we were talking about seeing in dim light, Seneca wanted to know how night vision goggles work.
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What are eyes made of? Chloe Symone wants to know "What are eyes made of?" Eyeballs are made of tissue, nerve cells, and water. Source Why do you see double when you're cross-eyed? Seeing double ("diplopia") is almost always a physical problem with your eyes, where they are pointed in different directions and therefore produce two images. Source | Unusual Eye Color The class wanted to know about eyes with unusual iris colors. Green Eyes are the rarest. Click here for more details including a ranking of eye colors, explanations, and lists of celebrities with each eye color. |
Interesting Things We Didn't Have Time to Cover
Remember when we talked about how the brain determines what we actually see. Here's a video that describes it in more detail: | |
Here's an example that demonstrates how the human mind does not read every letter by itself, but as a whole word. Click here to read more about this.. | Pareidolia is a psychological phenomena, where the mind perceives a recognizable image where none exists (such as faces). |
Click here to learn "How to Win a Staring Contest" |