Riemann Hypothesis: alleged (dis)proof

From PostSecret:

I willingly withheld the greatest discovery in mathematics from the world...It is the solution to the Riemann Hypothesis...The Riemman [sic] Hypothesis is false. The prime number 2^13466971-1 is off the critical line.

How to build an Airbus A380 in about 7 Mins

I have a feeling that this is not something you can do at home.

Scanner Frequencies

I got to borrow a TV-capable scanner for a couple of weeks, and have found interesting listening from both public services and amateur hobbyists.

Online Depth of Field Calculator

Through the magic of Javascript: tell it what camera body you have, lens, f-stop and subject distance, and it will calculate DOF and other handy parameters.