![New top story on Hacker News: But why is a sphere's surface area four times its shadow? [video]](https://3.bp.blogspot.com/-KYs7bNsL5eQ/V2d1Z0U4Y7I/AAAAAAAAm-Y/VPHnY95ua4ILVJDoP-FicZ8tPJpQpza5QCLcB/s600/no-thumbnail.jpg "New top story on Hacker News: But why is a sphere's surface area four times its shadow? [video]")
New top story on Hacker News: But why is a sphere's surface area four times its shadow? [video]
But why is a sphere's surface area four times its shadow? [video]
91 by espeed | 39 comments on Hacker News.
91 by espeed | 39 comments on Hacker News.
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