There is no device for transmitting energy over long distances and without contact

I dug from the depths of memory.

The most exciting technology of 2008 – wireless power.

Marin Solgaske and his colleagues used magnetic field-coupled resonance to light up a 60-watt light bulb.

Wireless power. Marin Solgasque, a physicist at the Massachusetts Institute of Technology (MIT), is working to build a world where electricity is transmitted wirelessly.

The idea of wireless power has been around for a long time. As early as the thirties of the 19th century, Michael Faraday discovered that changes in the surrounding magnetic field would produce an electric current in the wires. In the late 19th century, Nikola Tesla had the great idea of transmitting electricity around the world.

Because it was difficult to build an infrastructure that could extend to every city, every building, and every room, Tesla turned its attention to wireless transmission. He developed a plan for a transmission tower that would wirelessly transmit power between locations several kilometers away. His team did do some experimentation in this area, but they ran out of money before the tower was built.

Later, as industry embraced wired power transmission, the dream of wireless power ran aground. However, Tesla applied for one of its first patents in this area.

In June 2007, a team led by Solgaske announced that they had successfully used wireless transmission technology to light a 60-watt light bulb about 2 meters away from the mains. The test process is as follows: two sets of magnetic coils resonate at the same frequency, when one coil is connected to the power supply, the resonant magnetic field generated by the coil increases significantly, and the resonant magnetic field of the other coil without a power supply also rises, and then the coil generates electrical energy.

How is wireless charging for mobile phones charged? The principle is actually quite simple.

It can be charged without a charging cable. Electricity comes from? Electricity produced by a magnetic field. Your phone and wireless charge reacted to generate electricity.

Wireless charging is meaningless, the distance is very close, the principle is to separate the two coils of the transformer. Half converts electricity into a magnetic field. The other half receives the magnetic field and converts it into electricity.

The wireless charger means that there is no need to plug in the cable between the mobile phone and the charger, and the charger itself still needs to be connected to the power cord.

Cord-type mobile phone chargers are also available, which are easy to carry.

Tong Xingrui,

I have also thought about this by using the distance of nuclear magnetic resonance, and at a certain distance, it can be charged without a data cable, but I have a theory earlier.

You don't need to plug in a data cable to charge.

Need to have a medium or point of action that can carry the energy, first of all, wireless charging in a relatively short distance of the current technology can be done, but long distance is not possible, because there is resistance, resistance is resistance (including internal resistance and external resistance), to achieve long-distance transmission must overcome resistance, just like a South Lake battery access wire 1 meter long circuit has a loop, but access to 500 meters long circuit has no circuit is the same, theoretically long-distance wireless charging can be done, but to comply with the conservation of energy! For the first floor, I was speechless.

Electrical energy can be transmitted by wires, and information can be transmitted by electromagnetic waves.

According to the analysis of Chuangyi Technology Laboratory, RFID is a non-contact automatic identification technology, which automatically identifies the target object through radio frequency signals and obtains relevant data, and manual intervention is required for the identification work. As a wireless version of barcodes, RFID technology has the advantages of waterproof, anti-magnetic, high-temperature resistance, long service life, large reading distance, data on the label can be encrypted, larger storage data capacity, and free change of storage information, and its application will bring revolutionary changes to various industries.

Thunder is caused by the friction of positive and negative charges between clouds and clouds in the atmosphere to produce violent discharge, produce high temperatures, make the atmosphere expand sharply, and produce a deafening loud sound, which is lightning and thunder.

If the amount of charge becomes strong enough, lightning will occur. When lightning crosses the sky, it can quickly warm up the air along its path. The heated air expands rapidly and rushes in all directions as violently as it happens. This causes a huge sound wave.

The damage of lightning to the human body has the direct effect of electric current and overpressure or kinetic effect, as well as the effect of high temperature. When a person is hit by lightning, the current quickly passes through the human body, which can lead to the arrest of heartbeat and breathing, and the lack of oxygen in the brain tissue and death.

In addition, lightning strikes produce sparks, which can also cause different degrees of burns. Lightning injuries can also cause dendritic lightning strikes, epidermal peeling, intracutaneous hemorrhage, and rupture of eardrums or internal organs.

Lightning protection devices must be installed on tall buildings to prevent lightning disasters, do not use mobile phones outdoors, and use cardiopulmonary resuscitation immediately to rescue people who are struck by lightning. Try to take a bath as little as possible during thunderstorms, and solar water heater users should not take a bath.

When it rains, some of the clouds in the sky are positive and some are negative. Two.

When the clouds collide, lightning is emitted, and at the same time, a lot of heat is released, which heats up and expands the surrounding air. The air that is heated and expanded in an instant will push the surrounding air, causing a strong **-type vibration. This is thunder.

Electromagnetic waves from the perspective of energy to understand that the transmission distance must be related to the size of the power, in the premise of no practical significance, theoretically anywhere can be received, just the time and the definition of whether to receive or not, if your reception is defined as the receiver can be recognized, then it must be related to the reception sensitivity, because, the higher the sensitivity, the stronger the ability to identify the signal.

Look at this problem, let's talk about my personal opinion, for example: planet star, the sun and the earth as an example, the diameter of the sun is 1,392,020km represents high power, the earth is about more than 10,000 kilometers, (soybeans on the earth, representing micro power) represents small power, eight light minutes distance, the size of the sun plate, the size of the earth soybeans, a light year distance, maybe it looks only the size of a soybean, the earth may not be visible to the naked eye, 100 light years The sun may not be visible to the naked eye, but the telescope can clearly find it, When the earth is difficult to find, let alone a soybean on the earth, but what about 100 million light years? Ten billion light years?

Hundreds of billions of light years? trillions ......The speed of light and radio is the same, and the light is still consumed, and the radio is the same, like throwing a small stone in a calm lake, and the ripples swing in all directions, getting weaker and weaker, only to disappear.

The sensitivity is high, I can't transmit to your position, what are you going to receive? ......

Radio waves are reactive power, and reactive power will not do work, so there will be no energy output, and there will be no consumption, so radio waves can travel far away. Magnetic resonance is similar to bungee jumping, people up and down is kinetic energy potential energy conversion, is reactive power, but bungee jumping is doing work. Similarly, half of the magnetic resonance is similar to bungee jumping in active power, and the active power will be consumed, so the magnetic resonance transmission distance will be greatly reduced.