Before you buy a replacement battery for your dead Roomba, you might want to consider rebuilding the pack yourself. You can get a couple of 6 cell Sub-C NIMH packs for less money and more amp hours than the stock battery. I’ve been wondering whether it would be economical to just rebuild the battery pack, […]
Over at the Mind Hacks blog, Vaughan writes: The Children’s Hospital Boston have created a fantastic ‘virtual neuron’ which allows you to explore the basics of neural transmission with an interactive flash demo. Strictly speaking, of course, it’s designed for children, but it’s remarkably good fun whatever your age. Once you’ve got the demo window […]
Becky Stern forwarded us Jonathan Berger’s simple and useful hack that adds dividers to the Finder sidebar. I use the Finder’s Sidebar pretty heavily, but it was getting to be a mess that could really use some dividers. Solution? Make an empty folder called ” ……………….” and stick it in there. You’ll need a leading […]
Hackszine reader nathaN writes: i have mind performance hacks here on my lap, and i found hack 56. you included transformational grammar, surface/deep structure, you have to be aware of this other book on my desk, next to my lap. The book describes a method of using transformational grammar to analyze statements and gather incredible […]
I was digging around for an open source statistics package today and came across R, a GPLed statistics and and data analysis suite. Sweet! R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, …) and graphical techniques, and is highly extensible. The S language is often […]
There’s an easy way to make a UV pass filter for your camera. It just takes a $5 incandescent black light, a large bottle cap and some duct tape. For years I’ve wanted to mess around with UV photography. Unfortunately, all the websites on DIY UV seem to assume an infinite amount of money and […]
It’s a real drag when you think you’ve taken a great picture, only to load it up in photoshop and discover that your hands weren’t as steady as you thought they were. Depending on the magnitude of your error, chances are you can correct most small camera bumps or pans using a deconvolution filter. The […]
