A famous electrical scientist.

Georg simon ohm (1787—1845)1787 was born on March 6, 2006/kloc-0, and his father was a locksmith. My father taught himself the knowledge of mathematics and physics, and taught Ohm in his teens, which aroused Ohm's interest in science. /kloc-At the age of 0/6, he entered He Run University to study mathematics, physics and philosophy. Dropped out of school due to financial difficulties, and did not finish his doctoral studies until 18 13. Ohm is a man with great talent and scientific ambition. He has been a middle school teacher for a long time. Due to the lack of information and instruments, his research work has brought many difficulties. But he has been persistently conducting scientific research and making his own instruments in a lonely and hard environment.

Franklin

Benjamin Franklin was an American scientist, physicist, social activist and democrat during the bourgeois revolution. 1706 65438+ 10/7 was born in a worker's family in Boston. 17 14 entered the primary school and only studied for two years. 17 18 He 12 years old started as a printing apprentice. However, he is very yearning for science, diligent in self-study, and has mastered many foreign languages such as Italy and Spain and extensive knowledge of natural science. Thanks to genius and diligence, I finally made myself a great scientist and inventor that attracted worldwide attention. Franklin's most outstanding contribution is to set up a monument in the history of electricity. Electricity is a relatively young science in modern science, and Franklin's achievements have opened a new era in the history of electricity. His main research object is atmospheric electricity theory.

1749, on the basis of a lot of experiments, he proved that lightning is an electrical property. Lightning and electric spark have the same characteristics, both of which are instantaneous, similar to light and sound. They can burn objects, melt metals, flow through conductors, and concentrate on the tips of objects. He also proved that lightning and electric sparks can destroy magnetism and kill living things. Franklin used the famous kite experiment to prove his point: lightning is a discharge phenomenon.

1752 During the thunderstorm in Philadelphia in July, he put a kite into the air and risked his life to introduce "Tiandian" into the Leiden bottle, which successfully proved the characteristics of lightning. 1753, he fully studied the characteristics of "celestial electricity" and discovered the tip discharge phenomenon on the basis of a large number of experiments, thus inventing the lightning rod. This is a significant step taken by mankind on the road of conquering nature.

Franklin's "single fluid theory of electricity" and the introduction of the concepts of positive electricity and negative electricity make people further understand the nature of electricity and make electricity a quantifiable physical quantity. He thinks that the "two-fluid theory" of electricity is groundless. There is only one kind of electricity, and every object has a certain amount of electricity. Friction can't produce electricity, but can only transfer electricity from one object to another, and their total electricity remains unchanged. Objects that get electricity are positively charged, and objects that lose electricity are negatively charged. His theory laid a theoretical foundation for the discovery of the law of conservation of charge.

Franklin's discoveries, inventions and a lot of experiments undoubtedly proved that he was a great scientist. The invention of starter, Leiden bottle and other major electrical instruments made it possible for him to succeed in electrical experiments. His experiment can't be separated from a lot of work of predecessors. With regard to the nature of electricity, Franklin thought that the current in space might be similar to the light ether. He supported the wave theory of light and thought that light was an etheric vibration that filled the whole space. Franklin was a philosophical deist. He acknowledged the existence of nature and the objectivity of its laws, which gave him the courage and perseverance to carry out extensive scientific experiments, thus establishing a correct scientific theory.

Ampere, a familiar unit of current intensity, was named in memory of physicist Andre M Ampere, who was born in Lyon, France on 17751October 22nd.

Ampere's family was rich, and his father was deeply influenced by Russo's educational theory, so he set up a private library with rich books for him, so he read widely since he was a child. These books not only made him realize the noble side of life, but also aroused his interest in natural science, mathematics and philosophy.

Ampere is a mathematical genius. He has studied the basics of mathematics and geometry since he was a child. /kloc-started studying calculus at the age of 0/2; 18 years old, he has been able to repeat some calculations in Lagrangian analytical mechanics. From 65438 to 0799, I worked as a math teacher in Lyon, began to study math systematically, and later wrote a paper on probability theory.

With extraordinary wisdom and good use of mathematics for quantitative analysis, Ampere's academic status has been continuously improved. He was hired as a professor of physics and mathematical analysis by several colleges and was invited to become a member of the Royal Society.

Ampere has made great contributions to the development of electromagnetism. He not only coined the term "current", but also defined the direction of positive current as the direction of current. 1820, according to the "magnetomechanical effect of current" discovered by Oster, he conducted many experiments on the interaction between current and magnet, and obtained several important results: (1) The acting force produced by two currents with similar distance, equal intensity and opposite directions on the other current can cancel each other out; (2) The current on a bent wire can be regarded as consisting of many small sections of current, and its function is equal to the vector sum of these small sections of current; (3) When the length and working distance of current-carrying conductor increase by the same multiple at the same time, the acting force remains unchanged. After some quantitative analysis, he finally

1822 discovered ampere's law, and 1826 deduced the formula of force between two currents. Ampere's outstanding achievements in electromagnetism are obvious to all, and many physicists admired him at that time.

Ampere died in Marseille, France on 1836, at the age of 6 1.