Tesla Egg of Columbus Rotating Magnetic Field Induction Motor Model Science Experiment Toy 220V
Hero Section: Recreate the Legend of 1893
In 1893, at the World's Columbian Exposition, Nikola Tesla performed a "miracle." He made a copper egg stand on its end, not by magic, but by the invisible power of a rotating magnetic field. Today, you can own a museum-grade recreation of this legendary experiment. This isn't just a toy; it is a heavy-duty, 7kg tribute to the invention of the AC induction motor. Watch as the heavy brass egg spins, wobbles, and then defiantly rises to stand vertically, held by nothing but the laws of physics. It is the ultimate conversation piece for any engineer, educator, or admirer of Tesla’s genius.
Why Choose This Tesla Egg of Columbus?
- A Heavyweight Masterpiece: Weighing in at a substantial 7000g (7kg), this is a serious piece of machinery. Built with a thick acrylic base, stainless steel stators, and a solid brass egg, it exudes industrial quality and stability.
- Visualizing the Invisible: It perfectly demonstrates the principle of the Rotating Magnetic Field. You can’t see the magnetic field, but you can see its power as it grabs the non-magnetic copper egg and spins it into a gyroscopic frenzy.
- The Origin of the AC Motor: This device is essentially an "unrolled" induction motor. It is the most intuitive way to understand how the motors in our fans, pumps, and Tesla cars actually work.
- Educational & Hypnotic: Perfect for physics classrooms or executive desks. The moment the egg rises to its vertical position is a "Eureka!" moment that never gets old.
Technical Highlights: The Science Inside
- Split-Phase Architecture: The device uses a single-phase AC power source. To create rotation, it employs a capacitor to shift the phase of the current in the auxiliary winding. This time delay creates a magnetic field that physically rotates around the core.
- Induction Principle: As the magnetic field spins, it induces eddy currents inside the copper egg. According to Lenz's Law, these currents create their own magnetic field that opposes the stator's field, causing the egg to spin.
- Gyroscopic Action: As the egg spins faster, its center of gravity shifts. The gyroscopic effect takes over, lifting the egg onto its major axis—solving the "Egg of Columbus" puzzle through angular momentum.
Specifications
- Model Name: Tesla Egg of Columbus
- Material: Acrylic Base / Brass Egg / Stainless Steel Core / Copper Wire
- Input Voltage: 220V AC (Note: Requires 220V source)
- Power: 100W
- Dimensions: 40cm x 24.7cm x 8cm
- Product Weight: 7000g (approx. 15.4 lbs)
- Principle: Asynchronous Induction Motor / Rotating Magnetic Field
Usage Scenario
You place the heavy unit on a sturdy table and place the brass egg in the center of the dish. You flip the switch. A low hum begins. The egg starts to shudder, then spin. Slowly at first, then faster. Suddenly, it defies gravity, lifting itself up to spin perfectly on its tip. You explain to your guests that there are no magnets inside the egg—only the invisible hand of alternating current.
Important Tips
- Voltage Warning: This unit operates on 220V. If you are in a region with 110V standard (like the USA), you MUST use a step-up voltage transformer (110V to 220V) with at least 200W capacity. Plugging it directly into 110V will result in insufficient power to lift the egg.
- Heat Management: As with all high-power coils, the windings generate heat. Do not run the machine continuously for more than 15-20 minutes. Allow it to cool down between demonstrations.
- Safety: The device creates a strong magnetic field. Keep watches, credit cards, and pacemakers away from the active zone.
Customer Support
We are dedicated to preserving the legacy of scientific discovery. If you have questions about voltage compatibility or operation, please contact us: service@helloworld7.com
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