In response to our post of the “BuckyBalls” magnetic beads, Mister Zed pointed us to this cool Bill Beaty demo of super magnetic beads and the behavior of their magnetic fields in loops and chains. Bill also shows how you can make a simple compass with the magnets. Lots of other cool info and vids […]
While it doesn’t have anything to do with actual buckyballs, this set of 216 rare earth magnetic balls looks like a lot of fun. I just wish they didn’t cost $31 (with shipping). BuckyBalls [via Laughing Squid]
So. Incredibly. Cool. What is DNA Origami? DNA origami is a powerful method for constructing DNA objects. It involves taking a long, single-stranded DNA backbone (usually about 7000 bases in length) and forcing it to adopt an arbitrary shape using hundreds of short, single-stranded DNA oligonucleotides (each usually 20 to 50 bases long). This method […]
My post last week about shadowgraphy and Schlieren photography generated a lot of enthusiastic responses and not a few requests for a more detailed tutorial. Among the comments was one by Ian Smith, who has a great page here describing his own Schlieren photography set-up. (While you’re there, take a moment to appreciate the fact […]
If lemonie’s Lego microtome is too involved for you, here’s a way simpler design for a simple hand microtome made from a wooden spool, a bolt, a nut, a washer, and a bit of dowel rod, plus the essential razor blade.
A microtome is a laboratory machine normally used to slice extremely thin samples of soft specimens for optical microscopy. If you’re one of those folks who could care less about optical microscopy, it also has culinary applications. I quote from the sacred text of GoodFellas: In prison, dinner was always a big thing. We had […]
In this brief video, MAKE contributing editor Bill Gurstelle demonstrates a simple arc light (a precursor to the incandescent bulb) using a length of carbon rod, a knife switch, some ceramic insulators, Nichrome wire, and an 18-volt power tool battery. How to Make an Arc Light
