1. American scientist Franklin invented electricity. In 1732, American scientist Franklin believed that electricity was a weightless fluid that existed in all objects. When an object receives more electricity than the normal amount, it is said to be positively charged; if it receives less than the normal amount, it is said to be negatively charged.
2. The so-called "discharge" is the process of positive current turning into negative electricity. This theory is not completely correct, but the two names of positive electricity and negative electricity are retained. The concept of "electricity" during this period was a material proposition. Franklin conducted many experiments and proposed the concept of electric current for the first time.
3. Franklin asked others to conduct many experiments, further revealing the nature of electricity and proposing the term current. Franklin's other major contribution to electricity was to design the famous 1752 kite experiment to "capture lightning from the sky," proving that lightning in the sky and electricity on the ground were the same thing.
4. Scientists used metal wire to put a large kite into the clouds. A piece of rope is connected to the lower end of the metal wire, and a bunch of keys are hung on the metal wire. At that time, Franklin held the rope with one hand and gently touched the key with the other hand. The scientist immediately felt a violent shock (an electric shock) and saw a small spark between his finger and the key. Moreover, the scientist's hand was bounced away. This experiment showed that the metal wire of the kite soaked by the rain became a conductor, guiding the charge of the lightning in the air to between the finger and the key. This was a sensational event at the time. A year later, Franklin concluded and created the world's first lightning rod.
Extended information:
1. The electrical effect in matter is the link between electricity and other physical subjects (even non-physical subjects). There are many types of electrical effects in matter, many of which have become or are developing into specialized fields of study.
2. The battery we use uses the same principle as the battery pack originally manufactured by Volt. The casing of the battery is made of zinc; the outside of the zinc is covered with a layer of plastic or tinplate to prevent battery leakage. There are no silver or copper pieces in the battery, but a carbon rod in the center.
3. The discovery and application of electricity has greatly saved human beings physical and mental labor, enabled human power to grow wings, and enabled human information tentacles to continue to extend. The impact of electricity on human life has two aspects: the acquisition, transformation and transmission of energy, and the basis of electronic information technology. The discovery of electricity can be said to be a revolution in human history. The kinetic energy generated by it is continuously released every day. People’s demand for electricity is exaggerated to say that its role is no less than the oxygen of the human world. Without electricity, human civilization would still be alive. Will explore in the dark.
Reference: Baidu Encyclopedia-Electricity