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Anonymous users2024-02-15The noun "electricity" is a transliteration of the Greek word "amber".
The earliest electrical phenomenon discovered by mankind was triboelectric induction. Around 600 BC, ancient Greece was at the height of its culture, and noble women liked to wear soft silk clothes and amber jewelry when they went out. Amber is a fossilized resin, which is a bright yellow or red color when held against light, and was a valuable ornament at the time.
When people go out, they always wipe their amber jewelry clean. However, no matter how clean it is, it will quickly suck up the upper layer of dust. Although many people have noticed this phenomenon, they have not been able to explain it for a while.
There was a Greek named Thales who studied this amazing phenomenon. After careful observation and reflection, he noticed that the amber jewelry hanging around his neck was constantly shaking as he walked around, frequently rubbing against his silk clothes, and thus inspired him. After many experiments, Thales discovered that amber rubbed with silk did have the ability to attract small and light objects such as dust, fluff, and wheat straw.
So, he called this incomprehensible force "electricity".
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Anonymous users2024-02-14As early as 585 B.C., the ancient Greek philosopher Celis had discovered that rubbed amber could attract small and light objects such as broken grass.
Among the early studies of electrical phenomena, the first systematic study was carried out by the British physician William Gilbert.
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Anonymous users2024-02-13Static electricity is generated during the dry and windy autumn.
Static electricity is formed by the redistribution of charges caused by friction, and there are also forms of redistribution of charges due to the mutual attraction of charges. In general, the positive charge of the nucleus is equal to the negative charge of the electron, and the positive and negative are balanced, so it is not electrically visible.
However, if the electrons are deorbited by an external force, resulting in an unbalanced electron distribution, for example, triboelectric is essentially a process that causes an imbalance of positive and negative charges. When two different objects touch each other and rub against each other, the electrons of one object are transferred to the other and become positively charged because of the lack of electrons, while the other body gets some remaining electrons and the object is negatively charged, and the object is electrostatic.
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Anonymous users2024-02-12It has a lot to do with what you wear and what you are in. Wearing clothes made of chemical fibers is prone to static electricity, while cotton clothes are less likely to produce static electricity.
Under different humidity conditions, the electrostatic potential generated by human activities is different, and the dry environment is easier to transfer and accumulate charges.
Under different humidity conditions, the electrostatic potential generated by human activity is different. In the dry season, the static electricity of the human body can reach thousands of volts or even tens of thousands of volts.
Experiments have proved that there is no discomfort in the human body when the electrostatic voltage is 50,000 volts, and there is no danger to life when the electrostatic voltage is 120,000 volts. However, electrostatic discharges also create electromagnetic fields around them, which are of great intensity, although they last for a short period of time. Researchers are studying the effects of electrostatic electromagnetic fields on the human body.
Matter is made up of molecules, and molecules are made up of atoms, which are made up of negatively charged electrons and positively charged protons. Under normal conditions, the number of protons and the number of electrons of an atom are the same, and they are in equilibrium, so they are not charged externally. However, the electrons surround the nucleus, and as soon as they are separated from their orbits by external force, they leave the original atom and invade other atoms B, a atom is positively charged due to the lack of electron number, which is called cation, and B atom is negatively charged due to the increase in the number of electrons, which is called anion. >>>More
Relevant experts have done tests: rub a glass rod on the chemical fiber cloth 20 times, and immediately measure it with an instrument, and the results show that the maximum voltage can reach 150,000 volts. Taking off pure polyester clothes can instantly generate a high voltage of 50,000-100,000 volts. >>>More
Static electricity is caused by the transfer of electrons in the outer shell of atoms under the influence of various external forces, forming positive and negative ions respectively. Any two objects of different materials will be transferred and accumulated when they come into contact, forming static electricity. Static electricity on the human body is mainly caused by the friction between clothes or between clothes and the body, so when wearing clothes of different materials, the "electricity" is more or less different, for example, wearing clothes made of chemical fibers is more likely to produce static electricity, while cotton clothes produce less. >>>More
The principle of static electricity:Static electricity is formed by the redistribution of charges caused by friction, and there are also forms of redistribution of charges due to the mutual attraction of charges. In general, the positive charge of the nucleus is equal to the negative charge of the electron, and the positive and negative are balanced, so it is not electrically visible. >>>More
Hey, I've just finished learning about electrostatic balancing. We put the metal conductor in the external electric field, the free electrons in the conductor will make macroscopic directional motion under the action of the electric field force, so that the charge in the conductor is redistributed, the charge is all distributed on the outer surface, and the positive and negative charges are distributed at one end, so an electric field is generated, the external electric field is opposite to the direction of the electric field generated, and when they are equal, their combined electric field inside the conductor is 0; When a conductor reaches electrostatic equilibrium, there is no charge in the conductor for directional motion, and e=0, the electric potential on the conductor is equal everywhere, the conductor is a homopotential body, the charge carried by the conductor can only be distributed on the surface of the conductor, and there is no electrostatic charge in the conductor. We can ground the outer surface of the conductor, which acts as an electrostatic shield, and the outer space will not be affected by the electric field inside the cavity. >>>More