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Levitating Barbecue! Electromagnetic Induction

At the Palais de la Decouverte in Paris, they showed me this experiment where a 1kg aluminium plate is levitated above a large coil of wire that is being supplied with 800A of alternating current at 900Hz. This is by far the best demonstration of electromagnetic induction I have ever seen.

Back in London, I visited the magnetic lab of Michael Faraday in the basement of the Royal Institution. It was here that he did his groundbreaking work on induction. People had previously observed that current in a wire causes a compass needle to deflect, but more exciting was the prospect of using a magnetic field to generate current. Faraday created his famous induction ring by winding two coils of insulated wire onto an iron ring. When he connected a battery to one coil, a small pulse of current was induced in the other. When the battery was disconnected, current was induced in the other direction. This led Faraday to the conclusion that current was induced in the second coil only when the magnetic field through it was changing.

And if they hadn’t been wrapped on the same ring, Faraday may have noticed that the two coils repel each other when the current is induced due to the interaction of their magnetic fields. This is the same thing that is happening with the aluminium plate, except we’re using alternating current to create a continually changing magnetic field. This induces an alternating current in the plate, producing an opposing magnetic field which levitates the disk.

(by 1veritasium)

Perpetual Energy Wasting Machine

The “Perpetual Energy Wasting Machine” is a rope and pulley mechanism which moves an elevator continuously between the 1st and 2nd floor of a building. The system is powered by the sliding doors of the elevator.

The installation was created during a residency at the WRO Art Center in Wroclaw, Poland. It was funded by the Goethe Institute Cracow.

Creating Planets with Dry Ice Bubbles [SHANKS FX - PBS Digital Studios]

Dry ice, the solid form of Carbon Dioxide, is often used for creating captivating visual effects due to its mystifying nature. Episode 3 reveals how transforming packaged dry ice into bubble form can represent celestial bodies. Look for the episode extra next Friday!

Music by Big Fok:


Cartoon Network Halloween Pumpkin Stencils

Halloween’s just around the corner, but it’s not too late to light up the night with your favorite Cartoon Network characters! Check out our FREE Cartoon Network Halloween Pumpkin Stencils and click to download a zipped file with the stencils and instructions! Get carving, and Happy Halloween!!

(vía Cartoon Network)


DIY: Tenius MiniITX Computer Case

In short, Tenuis is a prototype of a miniITX based system, made of aluminium and solid walnut.

It’s designed as a living room PC, or, as in my case at the moment, as a general use computer, sitting next to my desk.

It can house as mentioned, any miniITX board, full size graphics card up to 190mm long, miniITX PSU, two HDDs/SSDs, and slot loader optical drive.

Not for hardcore gaming, but it plays D3 at full no problem, if you as me.

(by Gtek)


FACARO: Recycled Bicycle Chandeliers

This developing body of work draws inspiration from the aesthetics of victorian era chandeliers, DIY and Bike Culture, and follows an art tradition of utilizing non artistic materials for sculpture.

This series addresses class codes, power dynamics, reclaimed agency, and ecological responsibility. The traditional chandelier is seen as a bourgeois commodity, a cachet of affluence, excess, and as such power. The recycled bicycle parts become a representation of the dismissed, invisible, and powerless, but are also an affirmation of self-propelled movement. The bicycle chandelier thereby creates a new third meaning of reclaimed agency.

(vía Etsy)