In this lab, we are going to make an eyeball model using a balloon. This experiment should give you a better idea of how your eyes work. The way your brain actually sees things is still a mystery, but using the balloon we can get a good working model of how light gets to your brain.
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The focal length is not critical because you’ll be manually focusing the setup. But the recommendation is to use a lens whose focal length is about twice the lens diameter.
im in UK, so shopping list link doesn’t work for us.
I get 50mm diameter, but what focal length?
It’s about 50mm – there’s a direct link on the shopping list in Unit 19. The balloon should be able to stretch to accommodate it?
https://www.homesciencetools.com/search?search_query=lens
Hi! I was wondering how small the biconvex lens has to be? Because my mom ordered one from Amazon and it was too big.