Southampton University Gas Turbine
Miniature Sterling Engine
How to turn water into wine (with and without recursion). Calculating Levenshtein distances.
How to turn water into wine (with and without recursion). Calculating Levenshtein distances.
What is the probability of pulling out matching pairs of socks from a drawer in darkness?
Why it is critically important to start saving for your retirement as soon as possible.
Arrange the digits 1-9 to make a nine digit number such that the first digit is divisible by one, the first two divisible by two, first three divisible by three …
The mathematics of tape machines, cassettes, and toilet rolls.
What is the distribution of all possible cribbage scores? (And what is the connection between Cribbage and nuclear submarines?)
A classic problem involving the optimal way to flip a stack of pancakes into sorted order using just a spatula (prefix reversal). A young Bill Gates co-wrote a paper on this, and his upper bound solution was the best known solution for almost 30 years!
A mathematical sequence named after a famous Peanuts cartoon character.
A quick geometry puzzle for a shape that looks (a little) like a football helmet

Did you know there are 8! minutes this month?

4 week (4), 7 days (7), 24 hours (8 x 3), 60 mins (6 x 5 x 2)

8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 minutes = 8!


(Stolen from Twitter)

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Predicting the future is a crap shoot and, ironically, what appears to be hard is easy, and what appears easy, is really hard.
A classic problem about how to calculate the shortest crease by folding the corner of a piece of paper (and how most calculus text books get this wrong).

Here are notes from my visit to CES this year.

Notes from the show this year.

If you are on the East Coast, where it is cold, can you really get more gas for your money?

Can you really save money if you buy gas when it is cold outside?