A brief introduction to junior high school scientists, junior high school physics all the scientists

Joule-Joule, a brilliant British physicist. Joule has been engaged in experimental research throughout his life, and has made outstanding contributions to electromagnetism, heat, and the theory of molecular motion of gases.

Hertz was a German physicist born in Hamburg. Hertz's greatest contribution to mankind was experimentally confirming the existence of electromagnetic waves, Huygens-Dutch physicist, mathematician, and astronomer.

Galileo Galilei was a famous Italian mathematician, astronomer, physicist, and philosopher, and was the first scientific giant to integrate the three sciences of mathematics, astronomy, and physics on the basis of scientific experiments. Galileo was a pioneer of the scientific revolution, and throughout his life he proved and widely publicized the new worldview pioneered by Copernicus and Kepler. Faraday-English physicist, chemist, and well-known self-taught scientist.

Faraday was mainly engaged in the research of electricity, magnetism, magnetooptics, and electrochemistry, and made a series of major discoveries in these fields, and was the founder of electromagnetic field theory.

Albert Einstein-German physicist and winner of the Nobel Prize in Physics in 1921. His scientific achievements mainly include four areas: early research on Brownian motion; the creation of the special theory of relativity; advancing the development of quantum mechanics; The general theory of relativity was established, which opened up the way of cosmology research.

Descartes, March 13, 1596, in the city of Touran on the Hillettany Peninsula in western France. Descartes was the first to realize that the law of inertia is the key to solving mechanical problems, and was the first to establish the law of inertia as a principle.

Coulomb - French engineer and physicist.

Brewster-Scottish physicist who specializes in optics.

Bell ** inventor, born in 1847 in Edinburgh, Scotland.

Hooke: British Things; Hooke's law (f-bomb = kx) Newton: British; Newton's Laws.

Cavendis: British; The gravitational constant was measured by cleverly using a torsion scale device.

Joules: British objects; The work equivalent j = joule was determined.

Faraday: United Kingdom; Electromagnetic induction was discovered.

Exclusive summary, comprehensive answers. If you don't understand any of the following points, please ask.

Electromagnetism] Coulomb: Coulomb's law (high school), the unit of charge is he. In some places, the amount of electric charge is already learned in the textbook junior high school.

Ampere: There are many major achievements in high school, and in junior high school, you only need to know that the unit of current is his ohm: ohm's law, and the unit of resistance is him.

Volts: The voltaic battery was invented, and the unit of voltage was him.

Oster: Electromagnetism.

Faraday: Magnetism generates electricity, and the unit of capacitance is him (the capacitance is high school) Shen Kuo: The first discovery of the earth's magnetic declination.

Hertz: For the first time, the existence of electromagnetic waves was proved, and the unit of frequency was his [mechanics].

Galileo: Force is what changes the state of motion of an object.

Newton: The first law: the law of inertia, the second law (the first one), the third law, the action of force is mutual, the law of gravitation (high, but gravitational force is the ** of gravity). In addition, for the first time, a prism was used to scatter sunlight, and the unit of force was him.

Pascal: The law of liquid pressure, the unit of pressure is him.

Torricelli: Atmospheric pressure is measured for the first time.

Archimedes: The law of buoyancy, the principle of lever equilibrium.

Joule: Joule's law, the unit of energy is him.

Watt: The steam engine, the unit of power is him.

Other] Bell: Invention**, Sound intensity unit: Bass, decibels.

Celseus: The maker of the Celsius temperature scale. The unit of Celsius is him.

Faraday: Magnetism generates electricity.

Oster: Electromagnetism.

Archimedes: Pressure P = density gh

Torricelli: The atmospheric pressure was measured with a column of mercury.

Newton: Newton's three laws and the law of universal gravitation.

Newton's slide experiment on the inclined plane, the experiment and reasoning obtained Newton's first law of motion;

Ohm's law, which derives the relationship between current and resistance and voltage by controlling variables;

Joule's law, through the kerosene in the flask, the resistance wire, and the sliding rheostat form a series circuit to obtain the relationship between the heat generated by the resistance and the resistance;

the Torricelli experiment, measuring the value of atmospheric pressure (76 cm Hg) with a mercury tank and a glass tube closed at one end;

Archimedes' principle, which measures the buoyancy of an object immersed in a liquid by means of a spring scale; Archimedes also discovered the principle of the lever;

In the Oster experiment, the small magnetic needle is placed under a wire through which an electric current is passed, and the small magnetic needle will be deflected, and it is concluded that there is a magnetic field around the current;

Faraday, when a part of the conductor of a closed circuit cuts magnetic inductance lines in a magnetic field, an induced current is generated, that is, the phenomenon of electromagnetic induction, according to this principle, the later generator was invented;

Galileo's single pendulum experiment, which concluded that its period was only related to the length of the pendulum, invented the later pendulum clock;

In the Magdeburg hemisphere experiment, sixteen horses were used to pull apart the two hemispheres that were attached to each other, and it was concluded that the atmospheric pressure was very large;

The pressure inside Pascal's liquid, through the piezometer, shows that there is pressure inside the liquid, and it is related to the density and depth of the liquid, at the same depth, the pressure is equal in all directions.

Better! Aristotle is fine!