The exhibit of physics, called the spinning silver egg

Three-phase alternating current can produce such a changing magnetic field. If it is connected to the ordinary mains, it will not be able to turn up.

Because the pace of three-phase alternating current is inconsistent, the superposition of the magnetic fields generated by the three coils produces a stable rotating magnetic field.

It relies on Lenz's law. The magnetic field generated by the induced current follows the rotating magnetic field and forms a rotating moment that rotates the egg.

Words of knowledge.

1.The torsional moment is generated by the rotation of the magnetic field generated by the induced current inside the metal egg following the rotation of the changing magnetic field generated by the three coils.

2.The inconsistency of the pace of the three-phase alternating current produces a rotational magnetic field.

3.The shape of the metal egg is what determines its position.

The principle of electromagnetic induction, Lenz's law, the principle of the superposition of vectors of magnetic fields and the role of gravity in rotation.

In fact, it is the principle of three-phase motor, and Silver Egg can be understood as another three-phase circuit. And it can rotate freely, and after the three-phase induced current is formed, the current is also three-phase changing, and the magnetic field generated by it will interact with the magnetic field of the coil.

A look at the principle of a three-phase motor can be understood. Here's a clever use.

Put a magnet driven by a motor under the disc, which should be horseshoe-shaped. The poles should be on either side of the metal egg.

When the motor is turned on, the rotation of the magnet will cause the metal egg to rotate with it.

When an object rotates, it rotates around the equilibrium line of its center of gravity and the centrifugal force generated by the rotation. (I forgot what the term is called).

The equilibrium line of an egg-shaped object of uniform mass is the central axis.

Since the velocity increases from a small age, the egg must be rotated by gravity to sink from the big head close to the center of gravity, so that the small head rises and stands upright.

The physics knowledge in it is very simple, electricity generates magnetism, magnetism generates electricity, and magnetic fields and magnetic fields attract each other, and they follow suit.

The correct names are: the magnetic effect of electric current, electromagnetic induction, ampere effect.

Generally speaking, the box body of this kind of box is not heavy, but the mass of the rotating object inside (let's call it the rotor) is relatively large, to be precise, the moment of inertia is relatively large, when the rotor rotates at high speed, if you try to rotate the box, the angular momentum of the whole box changes, but the new angular momentum is the vector sum of the original angular momentum plus the external moment, resulting in the box is not as we generally expect to rotate like the door leaf.

As for a more specific analysis, it can be considered in conjunction with the rotation of the gyro. Initially, the axis of rotation of the gyroscope is almost perpendicular to the ground, and under the action of the gravitational moment, the gyroscope does not fall directly to the ground, but begins to shake its head (the angular momentum of rotation changes, and the angular momentum at any moment is the effect of the original angular momentum plus the gravitational moment).

Why silver. The egg will stand up.

There are three magnets around, and the silver egg turns for a while, why does it stand up?

Three ascending "golden eggs", three "silver eggs" quarrel with each other, only one of them has a gift in the "golden egg", and the same is true for silver eggs, there is an audience who scores **, and the probability of getting a gift after choosing the bucket and opening it is 1 3

There is a story in Greek mythology that Jacob dreamed of attaining the "sacred fire" along the ladder to the sky. Later generations called this dream ladder the Jacobladder Ladder.

The exhibit consists of transformers, horn electrodes and other parts. The transformer provides hundreds of thousands of volts of high voltage, which breaks down the air between the horn electrodes, forming a bow-shaped arc, generating a magnetic field that causes the arc to move upward, similar to climbing a ladder. When the arc is elongated to about 600mm, the applied voltage can no longer maintain the conditions required to produce the arc, the arc disappears, and a new arc will be generated at the bottom of the horn electrode, forming a repeated arc ladder phenomenon.

The Jacob's Ladder shows how arcs are created and disappear. Two horn-shaped tubular electrodes, one connected to high voltage and the other to ground. When the voltage rises to 50,000 volts, an electric arc is generated at the bottom of the tubular electrode, and the arc is stirred up step by step, climbing upwards like clusters of sacred flames, like Jacob's ladder in ancient Greek mythology.

Nikola tesla.

Tesla coils are also called tesla coils because this is from"tesla"This English name is a direct transliteration. This is a distributed parameter high-frequency resonance transformer that can obtain high-frequency voltages in the millions of volts. The principle of a Tesla coil is a device that uses a transformer to boost the voltage of a normal voltage, and then discharges it from a discharge terminal through a two-pole coil.

In layman's terms, it's an artificial lightning maker. There are Tesla coil enthusiasts all over the world, and they have made all sorts of devices and created dazzling artificial lightning.

Correction is not Greek mythology, but the Bible: ladders and ram's horns are all symbols in the Bible.

Rubber guns

bai rubber hand, rubber bouncing, du rubber zhi whip, broom foot, rubber spiral fall, dao rubber gas,

Ball belly, rubber sickle, rubber tornado, rubber shotgun, powerful rubber leg, iron head clock, rubber balloon, rubber catapult, rubber broadsword split, rubber rocket launcher, rubber tomahawk, rubber gun.

Rubber Bailie Fist, Rubber Hammer, Rubber Invincible Fist, Rubber Windmill, Rubber Pendulum, Rubber Random Fight, Rubber Shield, Rubber Fish Net, Rubber Volcano, Rubber Flower Arrangement, Rubber Cupola,

Rubber Iron Clock, Rubber Rocket Rush, Rubber Can't, Rubber Net, Rubber Big Swallow, Rubber Pill Saw, Rubber Shotgun, Water Gun, Rubber Storm, Rubber Fireworks, Rubber I Kick, Rubber Spear.

Zoro is talking about I.

bai36 annoyance, du2 72 annoyance, 3 hundred eight annoyance. To put it bluntly, it's not called a move, it's just bragging about disgusting people.

Besides, what is there to know about so many tricks, how boring Luffy is a move to stretch his legs casually, and he calls a whip when he stretches it horizontally, and he calls it a tomahawk when he stretches it vertically, do you feel that it is worth knowing?

I know that someone has answered the copy.

Let me explain it to you, salmon is a collective name for salmon and salmon, that is, they are all of the same genus, but they are divided into different subspecies, which can be understood as Siberian tigers and South China tigers are tigers at first glance, but if you look closely, you will find that there are differences in size, coat color and even appearance.