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Description
Tesla Egg of Columbus 220V 100W AC Motor Rotating Magnetic Field Physical Toy - US PlugTesla Egg of Columbus 220V 100W AC Motor Rotating Magnetic Field Physical Toy US PlugFeatures:. Using capacitor split phase single phase motor scheme to generate rotating magnetic field. One winding is directly connected to the power supply, and the auxiliary winding is connected in series with the capacitor and then connected in parallel with the main winding. In this way, when the single phase alternating current is passed through the motor, due to
Tesla Egg of Columbus 220V 100W AC Motor Rotating Magnetic Field Physical Toy - US PlugFeatures:
.Using capacitor split-phase single-phase motor scheme to generate rotating magnetic field
.One winding is directly connected to the power supply, and the auxiliary winding is connected in series with the capacitor and then connected in parallel with the main winding
.In this way, when the single-phase alternating current is passed through the motor, due to the action of the capacitor, the current in the secondary winding is ahead of the current in the main winding in time, and they can establish a rotating magnetic field in the middle of the iron core, causing an induced current in the copper egg , Follow the rotating magnetic field and rotate
.The Columbus egg can be used for experimental teaching to demonstrate and explain the principles of rotating magnetic field models and asynchronous motors
.At the same time have a certain degree of appreciation, stimulate interest in scientific exploration, and strengthen the cultivation of scientific quality
.Suitable for children over 12 years old or adults
Specifications:
.Color: As Shown
.Material: Acrylic + Brass + Stainless Steel + Wire
.Voltage: 220V
.Power: 100W
.Product Dimensions: 40 x 24.7 x 8cm
.Product Weight: 7000g
.Package Dimensions: 45 x 30 x 10cm
.Package Weight: 7500g
.Packing: Carton Box
Package Content:
.1 x Educational Toy
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4.1 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Love them!
Color: White-cooling Basic, Size: Queen(Pack of 2)
Love them! After 10 years with our MyPillows, they finally lost their fluff. The reviews I read of the MyPillows of today were not good; they didn’t have as much filling as they used to. These pillows remind me of how fluffy our new MyPillows were 10 years ago!! You sink right into them and can mush them however and they stay. These are way cheaper than the Coop and it’s the same concept; add or remove the filling as needed. The cooling side is a huge plus too! You won’t be disappointed with these pillows!
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Awesome Pillow!!!
Size: Queen, Number of Items: 1
This pillow is Amazing!!! So Great to sleep on. I finally can get a good night's sleep!!! Its very soft and comfortable. I also haven’t gotten up with a stiff neck in the morning either!!!
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying.
It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start.
I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
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Reviewed in the United States on February 21, 2026