At the atomic scale, generally speaking, solids are either crystalline or amorphous. In crystals, the atoms or molecules fill space in a repeating, orderly arrangement, like stacked cannonballs or cells in a honeycomb. Table salt is a handy example. In amorphous materials, however, the atoms or molecules are packed together randomly, without repeating arrangements. Glass […]
Firefly Workshop’s Craig Smith described how he seals small wounds with the help of superglue: I read that the American Medical Association now recognizes superglue as a medical aid. For cuts that are deep, but not requiring stitches, or in an area where stitches are tricky, superglue is used. Funny thing was that I had […]
Back in 2009, my colleague John Park published his Florence Siphon coffee brewing apparatus in MAKE Volume 17. That’s him, above, goggling up before disengaging the safety interlocks on his infernal machine. I have had the pleasure of meeting John Park on several occassions, but even if I only knew him through his hyped-up internet rockstar persona, a few things would still be obvious. For instance, he is irritatingly good-looking. Also, he takes his beverages pretty damn seriously.
Aerogels are fascinating materials, with lots of interesting and, frankly, amazing properties, but they are not easy to make. These days, industrial manufacture with an eye towards commercial applications, primarily as thermal insulators, is bringing the price down some, at least for granules, but larger pieces still cost around $50 US per cubic inch. Ben Krasnow, impressively, has made his own…
A look at ten of our favorite flamethrowers covered here on Make:.
We have featured projects from teenage chemist Hayden Parker, who is this semester an entering freshman at Willamette University, several times since he first showed up on our radar at Bay Area Maker Faire 2011. We recently asked Hayden to share some of the most useful practical tips he’s picked up from the home and hobby chemistry community, and this list is the result. Thanks, Hayden! Keep up the good work! – Ed.
No power rings are involved, here, just boric acid, methanol, and a homemade spirit lamp. It’s all nicely explained by Instructables user The Green Gentleman.
