Ken Shirriff's blog

The last launch of the Endeavour space shuttle has been delayed 48 hours (update: indefinitely ) due to a problem with the APU heater and t...

What's the better way to solve a math problem? A few lines of code, or a bunch of mathematical thought? I wanted to solve the followin...

I've been experimenting with IPv6 on my home network. In part 1 , I described how I set up an IPv6 tunnel on Windows 7 and how IPv6 ki...

I recently received an interesting math problem: how many 12-digit numbers can you make from the digits 1 through 5 if each digit must appe...

You may have heard that the Internet is running out of IP addresses and disaster will strike unless everyone switches over to IPv6. This ...

I recently saw a tricky nine piece puzzle and wondered if I could use Arc to solve it. It turned out to be straightforward to solve using s...

I've extended my Arduino IRremote library to support RC6 codes up to 64 bits long. Now your Arduino can control your Xbox by acting a...