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Slices of Hanging Cubes

Posted on June 29, 2019 by Samuel Nunoo

Hang a cube from one of its vertices. Now, if you slice it horizontally through its center, you get a...

Posted on June 29, 2019 by Samuel Nunoo

We have seen in the Fun Fact Cantor Diagonalization that the real numbers (the “continuum”) cannot be placed in 1-1 correspondence with...

Posted on June 29, 2019 by Samuel Nunoo

Did you know that it is possible to cut a solid ball into 5 pieces, and by re-assembling them, using...

Posted on June 29, 2019 by Samuel Nunoo

One challenge in robotics is the problem of computer vision: how do you program a computer to interpret and “understand”...

Posted on June 29, 2019 by Samuel Nunoo

Imagine that each of the ropes in the two sets of links in Figure 1 are solid (with thickness) and...

Posted on June 28, 2019 by Samuel Nunoo

Imagine that the two objects in Figure 1 are solid (with thickness) and made of very flexible and stretchy rubber....

Posted on June 26, 2019 by Samuel Nunoo

Here’s a terrific mathematical card trick that will impress your friends. When you do this trick, the effect of the...

Posted on June 26, 2019 by Samuel Nunoo

Fix some number N. What fraction of the integers less than or equal to N are prime? Thinking about it,...