water is kinda a lens?
Here is the glass that made the illusion. the button is twiseted like a lens. It's like the concave side of a spoon.
didn't get it completely
Sorry... It's too hard for me to explain it in English...
Yes water can make a lens where are some glasses using water to make the lens find out more about them here if you would like its amazing tech.
https://www.ted.com/talks/josh_silver_demos_adjustable_liquid_filled_eyeglasses
https://www.ted.com/talks/josh_silver_demos_adjustable_liquid_filled_eyeglasses
lol
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