Galileo pioneered a method of verifying theories with experiments

Galileo 53. Galileo pioneered a method of experimentally verifying theories

(dynamics) began in the 17th century

In the early 17th century, the Italian physicist and astronomer Galileo used experiments to reveal The principle of inertia of matter is used, and the accelerated sliding experiment of an object on a smooth slope reveals the law of equal acceleration motion, and realizes that the value of gravity acceleration near the ground does not vary with the mass of the object, it is approximately a constant, and then The general laws of projectile motion and particle motion are studied. Galileo's research created a scholarly method that was commonly used by later generations, starting from experiments and using experiments to verify theoretical results.

…inertia, nature, inertia: see "Galileo 6"...

… governance (Baidu Encyclopedia): "Shu Wen Jie Zi": "Zhi, water out of Donglai Qucheng Yangqiushan , South into the sea. From the water, the sound of Taiwan." (This is not a word source, for reference only) The embryonic embryo means Taiwan. The superimposition of water and stage means that water is managed like an embryo.

Original meaning: management, processing. Such as: governance, family management, funeral management, temporary management, permanent governance, state security, autonomy, rule (a. management; b. distribution).

Yan (yǎn) meaning: extended to mean "punish". Such as: conviction. Treat.

Derivative meaning: extended to mean "medical". Such as: cure, cure, and cure.

Derivative meaning: extension refers to "eliminate crop pests and diseases". Such as: control locusts. Cure aphids.

Derivative meaning: extended means "to engage in research". Such as: academic research, history.

Derivative meaning: extended to mean "stability". Such as: governing the world. Public order (the order of society). Rule the world.

Derivative meaning: extended to refer to "previously called the seat of local government". Such as: governance...

[...Yan, Yi, Yan Yi: see "Euclidean 25, 26"...

(... "Euclidean": novel name...)]

…zhi (Baidu Chinese) 2: 1. Governance: ~ home.~ Country. Since ~. ~ Standard. ~ This. ~ Huai ( Huaihe ).

2. Refers to stability or peace: ~ world. The world is big~.

3. Formerly known as the seat of local government: county~. House~. Province~.

4. Treatment: ~ disease. My illness has been ~ healed.

5. Eliminate (pests): ~ locusts. ~ Aphids.

6. Punishment: ~ crime. Punish ~. Office~.

7. Research: ~ learn...

… scholarship: research knowledge: ~ rigorous. Seeking truth from facts is the correct attitude...

…Methods, methods, methods: see "Euclidean 2, 3"...

In the 17th century, British scientist Newton and German mathematician Leibniz_ The calculus established by span3span has brought dynamics research into a new era.

…Research, research, research: see "Euclidean 42"...

In 1687, Newton's masterpiece "Span2span Mathematical Principles of Natural Philosophy" clearly proposed the law of inertia and the particle The law of motion, the law of action and reaction, the law of independent action of force.

…Natural, natural, natural: see "Euclidean 128"...

…Philosophy, learning, philosophy: see "Euclidean 110"...

…number, learning, mathematics: see "Euclidean Get 49"…

…original, principle, principle: see "Euclidean 41"...

…laws, laws, laws: see "Euclidean 79"...

He is looking for falling body motion The law of universal gravitation was discovered and Kepler’s law was derived based on the cause of the movement of celestial bodies, which verified the relationship between the centripetal acceleration of of the moon orbiting the earth and the acceleration of gravity, indicating the tides on the earth (xī) phenomenon,A very strict and complete system of mechanics laws has been established.

…movement, movement, movement: see "Galileo 9"...

… cause, cause, reason: see "Euclidean 199"...

…strict, strict, strict: see "Euclidean 125" …

The core of dynamics is Newton's second law, which points out the relationship between force, acceleration, and mass. Newton first introduced the concept of mass and distinguished it from the gravity of an object, indicating that the gravity of an object is only the gravitational force of the earth on the object. After the establishment of the law of action and reaction, people have carried out research on particle dynamics.

…acceleration, speed, degree, speed, acceleration: see "Galileo 3, 4"...

…Quality, quantity, quality: see "Galileo 5"...

…General, concept, concept: see "Euclidean Get 22, 23"...

…things, bodies, objects: see "Galileo 9"...

…weight, force, gravity: see "Galileo 5"...

Mechanics work It is inseparable from calculus work. Since then, dynamics has become a rigorous science based on experiment, observation and mathematical analysis, thus laying the foundation of modern mechanics.

…Analysis, analysis, analysis: see "Euclidean 36"...

…Strict, tight, rigorous: see "Euclidean 53"...

…Subject, learning, science: see "Euclidean Get 4"...

…basic, foundation, foundation: see "Euclidean 37"...

17th century Dutch scientist Huygens obtained the earth's gravitational acceleration by observing the pendulum and establishing The equation of motion for the pendulum. Huygens also established the concept of centrifugal force when studying cone pendulums; in addition, he also proposed the concept of moment of inertia .

…Huygens: See "Galileo 6~9,31"...

… Fang: See "Euclidean 2"...

… Cheng: See "Euclidean 194"...

…Equation (Baidu Encyclopedia): Refers to the equation containing unknown numbers. It is an equation that expresses the equal relationship between two mathematical formulas (such as two numbers, functions, quantities, operations). The value of the unknown number that makes the equation holds is called the "solution" or "root". The process of finding the solution of an equation is called "solving an equation".

can avoid the difficulty of thinking backwards by solving equations, just list the equations containing the quantity to be solved directly...

…Equation (Baidu Chinese) 2: equations containing unknowns, such as x+1= 3. x+1=y+2. Also called equation...

…Moment of inertia: is the inertia of a rigid body when it rotates around its axis...

"In the mechanical system currently studied, the factors that need to be considered are gradually increasing, for example, variable mass, non-integral, non-uniformity Linear, non-conservative, and feedback control, random factors, etc., make the differential equations of motion more and more complex, and there are fewer and fewer problems that can be solved correctly. Many dynamics problems need to be solved approximately by numerical calculation methods, miniature, high-speed , The application of large-capacity electronic computers has solved the difficult calculations.

Please see the next episode " Galileo 54, Lagrangian, ideal fluid dynamics equation, Bernoulli equation, Hamilton canonical equation""

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