1. 3D Star Origami

3D star origami Well, maybe not quite "origami", since there's some gluing involved, but in this article I tell you how to make 3D stars (star polyhedra) with a minimum of effort. Materials and tools needed: paper sheets, scissors, glue, tape.

Wednesday, 07 January 2009 | 1394 hits | Print | PDF |  Email | Read more

2. The World in one picture

Did you know you can make a picture that surrounds you completely? It's called a spherical panorama, and you can make it by stitching together pictures taken with just about any camera.

Friday, 10 October 2008 | 1141 hits | Print | PDF |  Email | Read more

3. Jet Engine without Fuel

Jet engines, like those powering airliners, burn a lot of fuel, right? Think again. . . . In the attached paper, I reveal how a jet engine can also be made to work without combustion of any kind. The trick is that you must carry some heavy fluid on...

Tuesday, 07 October 2008 | 1240 hits | Print | PDF |  Email | Read more

4. Move over, Picasso!

Ever wanted to create a painting out of, say, a photograph of a beloved person, but were stumped by the difficulty? Now you can! Here I'm going to tell you how to fake oil paintings (or any other type of technique) so only an expert would be...

Wednesday, 26 March 2008 | 988 hits | Print | PDF |  Email | Read more

5. IIT Alma Mater

A few years ago, the school where I work decided to change its Alma Mater because nobody could remember the tune, and much less the words. There was a contests and, what do you know, I won (against very little competition, truth be said). Read on to...

Wednesday, 26 March 2008 | 1192 hits | Print | PDF |  Email | Read more

6. Hiding Secrets in Plain Sight

Spies often find themselves in a situation where they're being watched and they need to send a message. You may need to do that sometime, too. This article tells you how to embed messages in common files, which can be emailed or posted in a...

Wednesday, 26 March 2008 | 887 hits | Print | PDF |  Email | Read more

7. Calculator-Based Cryptography

You think you need a computer to have a high-security code? Think again. I am about to tell you how to encrypt a message with as much security as you want, using just a common calculator. The name of this code is "root", because the calculator's...

Wednesday, 26 March 2008 | 902 hits | Print | PDF |  Email | Read more

8. Perpetual Motion from Light

Perpetual Motion Machines are those that would produce free, endless power, thus ending all of humanity's energy problems (and maybe some political ones at the same time). I am not going to embarrass myself showing pictures of my early perpetual...

Wednesday, 26 March 2008 | 681 hits | Print | PDF |  Email | Read more

9. Possible Perpetual Motion

What do you know? It seems there is a new kind of Perpetual Motion Machine, which would give free energy for ever, and Nature hasn't managed to pass a law against it (just yet, at any rate). Read on if you're strong-hearted (warning:...

Wednesday, 26 March 2008 | 1166 hits | Print | PDF |  Email | Read more