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Variable Speed Fan With Snap Circuits, Kano Computer
In a previous How-To Guide I demonstrated how to blink a Snap Circuits LED with the Kano Computer (blinking an LED is the “Hello World!” of hardware hacking) and in this guide I’ll demonstrate how to...
View ArticleLIGO, Gravitational Waves, And Laser Interferometry
UPDATE: LIGO has detected gravitational waves. read more
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DIY Stereograph
In my previous article, Subscription Box Chemistry Set, I tested the Google Cardboard headset from the starter kit as a stereograph viewer with stereographs I found online. Unfortunately, the screen...
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Subscription Box Chemistry Set
You’ve probably had subscriptions to newspapers, magazines, or even Netflix. Fairly recently the subscription box has emerged like Loot Crate, filled with Sci-Fi/Fantasy/Comic book themed T-shirts,...
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Celebrate Science Indiana
If you live in Indiana, or at least near Indianapolis, you should go to the Celebrate Science Indiana science festival in the Blue Ribbon Pavilion at the Indiana State Fairgrounds Saturday 3 October...
View ArticleLego Optics Lab: Laser Interferometer
Last week the European Space Agency announced the launch of its Lisa Pathfinder mission later this year to test if laser interferometry can be used in space to detect gravitational waves. It's fairly...
View ArticleThe Spread Of Life Among The Stars
One day, it might be possible to detect the spread of life among the stars through panspermia--a hypothetical process of life distributed throughout the Milky Way by asteroids, comets, and even...
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1859 Balloon Voyage
My wife and I went to see Big Bad Voodoo Daddy (“You and Me and the Bottle Makes Three”) Saturday at Conner Prairie, part of the Indianapolis Symphony Orchestra Symphony on the Prairie summer series....
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Polariscope
I decided to build a polariscope for my Lego optics lab. On occasion you might need a mechanism to rotate filters such as a polarized filter and a polariscope is a simple and fun way to view the...
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Lego Optics Lab: Large Lens Holder
For my Lego Optics Lab I have so far built a beam splitter, and a small lens holder. The beam splitter article got a link on io9 (my name is misspelled) and on Scientific American.read more
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Lego Optics Lab: Small Lens Holder
In my previous article, I started building a Lego optics lab with a dichroic prism I salvaged from an old computer projector that I took apart (I used the prism to build a beam splitter). I also...
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Lego Optics Lab: Beam Splitter
I finally took apart a broken computer projector. Some of the optics were burned or broken but I managed to salvage several lenses, mirrors, filters, and a curious little glass cube. read more
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LaserOscope
Build a laser oscilloscope using Lego, littleBits, Erector set, and the Kano Computer. In honor of The International Year of Light I’ll demonstrate how use the Kano computer to drive a littleBits motor...
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DIY Titration Lab Ware
You often see demonstrations of titration using an expensive glass burette, but you can build titration lab ware using a disposable serological pipette, a solder sucker bulb, and a ring stand or...
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The Tyndall Effect
You can use a simple cat toy (laser pointer) to demonstrate the Tyndall effect. “The Tyndall effect, also known as Tyndall scattering,” according to Wikipedia, “is light scattering by particles in a...
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Erector Set Magnetic Optical Mount For Laser Pointer
I’ll demonstrate how to build a simple magnetic optical mount for a cat toy (laser pointer). Though it is simple—that is, there aren’t any fine tuning mechanisms one would find on an optical bench—it...
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DIY Super Selfie Stick
My wife bought me a “selfie-stick” (sometimes called Wand of Narcissus), which is ironic since I so rarely actually take selfies. But, once I took a look at its simplicity of design, I couldn’t leave...
View ArticleFoldscope: A Microscope You Can Carry In Your Pocket
I finally received a Foldscope beta test kit. “Foldscope is an origami-based print-and-fold optical microscope that can be assembled from a flat sheet of paper,” according to the website. The Foldscope...
View ArticleSnap Circuits Science: The Diode
The diode has a number of applications in electronic circuits. One application you may be familiar with is a rectifier. A rectifier converts alternating current (AC) to direct current (DC). Alternating...
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Snap Circuits Science: The Electronic Relay
What’s a relay? You’ve probably seen a relay race where one runner hands off a baton to another runner. Similarly, an electronic relay hands off control from one circuit to another. A relay is a very...
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