What is the ratio of a circle’s circumference to its diameter? If you know the answer to this question, then you might be interested in the pi shower curtain. Because it displays the first 4,600 digits of pi, you might want to make sure that you don’t get any soap in your eyes, because you will most likely have to be in the shower for a long time before you are able to memorize them all!

math and science shower curtain · pi shower curtain