Two ropes and a lighter

Logic games for cocktail parties via Reddit

These are not genius level puzzles but they beat the heck out of Sudoku. Here’s puzzle number 1.

You are given two ropes and a lighter. This is the only equipment you can use. You are told that each of the two ropes has the following property: if you light one end of the rope, it will take exactly one hour to burn all the way to the other end. But it doesn’t have to burn at a uniform rate. In other words, half the rope may burn in the first five minutes, and then the other half would take 55 minutes. The rate at which the two ropes burn is not necessarily the same, so the second rope will also take an hour to burn from one end to the other, but may do it at some varying rate, which is not necessarily the same as the one for the first rope. Now you are asked to measure a period of 45 minutes. How will you do it?

BSG to move to Sunday Nights via Digg

Well, looks like Friday nights are going to be slow again.

Waves in a Large Free Sphere of Water via Digg

Incredible video of a water sphere in freefall. They even manage to insert water droplets inside of an air bubble within the sphere.

Marv

About madmarv

Civil Engineer, CAD Geek, podcast junkie and amateur photographer.
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