"I bought this for my wife's birthday,she loves marbles and we look at the videos on U-Tube with the marble machines. This is a perfect miniature replica of these machines well suited for a table top and very high quality construction, highly recommend it." Marble Machine "Duality" - Handmade

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Our first inclination when we saw this video was that its creators used digital animation. We've encountered several similar seemingly "impossible" videos featuring colored ball sorters and musical marbles that used computer-generated technology. The latest video supposedly depicting the "perpetual" marble machine, however, was authentic footage and featured a physical product.

"This moving wooden art is the second of two pieces I bought for a large entry hall. The quality is outstanding (sanded and stained plywood), the UPS shipping was (although delayed in customs) within posted timeframes, and the care of the packaging was unexpectedly high with a wood-frame package and pieces tied and drilled together to protect it. Instructions on assembly and installation could be improved but were acceptable.

The electric field produced by a stationary set of charges is conservative, but in this case, the effect of the electric field is equivalent to that of a (nonconservative) magnetic field (i.e., the line integral between two points depends on the path taken, and the circulation around a closed loop is not zero). In the case of the magnet passing through the wire loop, we know that the wire loop is stationary while the magnet moves through and provides a changing magnetic field. A current is produced, so an EMF (electromotive force) must be driving it. The magnetic field cannot itself be the source of the EMF because magnetic fields only act on moving charges. Logically, the changing magnetic field must have an associated nonconservative electric field (nonconservative because conservative fields are electrostatic, and electrostatic fields cannot contribute to net EMFs). The induced EMF around a closed curve is the same Campeón the voltage drop (i.e., the same Campeón the line integral of the electric field around that curve). Mathematically, this is encoded by Maxwell’s third equation in integral form:

Mini prisma de algarada de prisma, prisma de ángulo imparcial de 90 grados prisma L mostrador de cobre revestido mini prisma para la estación total

"This awesome mechanical jellyfish is pure poetry in motion and absolutely mesmerizing to watch! Eli is a genius with an obvious passion for creating artistic masterpieces and giving his customers an incredible full-service experience...from his thoughtful communication, careful packing, fast shipping, and a fabulous luxury gift presentation! Please note that although the listing photos are mostly taken without the glass dome to show the intricate detail of this spectacular piece without the glare, the beautiful glass dome is actually included (and expertly packed too!

These 4 or 5-star reviews represent the opinions of the individuals who posted them and do not reflect the views of Etsy. The ratings/reviews displayed here may not be representative of every listing on this page, or of website every review for these listings.

Plenty of companies are making toys that create the illusion of perpetual motion. Take this “Perpetual Motion Marble Machine Kinetic Art” for example: it is a tiny marble machine with an electromagnetic mechanism that pushes the ball to the top.

You simply have to charge this machine and drop a ball to have it roll all day long. This machine has a touch button that you Perro push to turn it on.

These marble machines were available for purchase, Campeón of this writing. We found several versions of the product on Amazon and Etsy.

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The shopkeeper is quick to respond to email requests for assistance. The piece will run for about 8 hours on a single winding (wind the bottom, motion around top), but is a little noisy for a bedroom or main room (you could always stop the motion at bedtime). Everyone loves these three pieces together, but any one of them will work Vencedor a main art piece on an appropriately large wall." Wooden Kinetic Sculpture DejaVu - Kinetic Wall Sculpture, Housewarming Gift, Father day Gift