In a previous article
I demonstrated how to use a One Time Pad cipher using a pen, paper, and Scrabble tiles (or Boggle cubes). If used correctly, One Time Pads cannot be broken by the NSA or any intelligence service on Earth because the One Time Pad keys use a randomly generated set of letters or numbers to encrypt your message.
Birdsnap is an iPhone and web based app that uses many of the techniques of facial recognition software to identify 500 of the most common North American birds. The web based version of Birdsnap is actually very easy to use: upload your picture, click on the bird’s eye, click on the bird’s tail, enter your location along with the date the picture was taken, and click submit. I’ll demonstrate how to use Birdsnap even though it was unable to identify the bird I submitted.
Last Wednesday I played golf at South Grove Golf course and my cousin snapped the following picture near the 9th hole tee:
In previous articles I’ve demonstrated how to use littleBits
and erector set
parts to build a magnetic stirrer
and a sample rotator
. Since I was able to drive Erector set machines with the littleBits motor I decided to try to use it to drive K’nex contraptions.
Have you ever wondered how hand warmers and cold packs worked? The kind that can be stored at room temperature and then used when needed depend on exothermic and endothermic chemical reactions. An exothermic
chemical reaction gives off heat into its surroundings. Conversely, an endothermic
reaction absorbs heat from the surrounding environment.
To some, it might seem that you can patent anything these days. Last week a weird story appeared in my Facebook newsfeed: Amazon has somehow been able to patent photography against a white background. The story was originally reported on DIY Photography
. It has been making the Internet rounds since. The Electronic Freedom Foundation points out that the story made it onto the Colbert Report
. But things aren’t always as they appear.
If you could save the lives of 2.7 million children would you do it?
I think it is safe to say that most people would answer “yes.” You may be thinking, "But I am only one person—how could I make a difference?" You have family, don’t you? You have friends, don’t you? You have colleagues and coworkers, don’t you? You could save the lives of 2.7 million children by doing nothing more than informing your family, friends, colleagues, and coworkers about Vitamin A Deficiency (VAD) and the simple, safe, inexpensive, and sustainable solution: Golden Rice.