What Newton has accomplished in exploring the universe

1. It reveals the existence and laws of gravity, a universal force, and makes many phenomena understandable.

2. The impact on the level of human thought (thinking concept) is, in a way, more significant!! Because it makes people understand that heaven and earth are unified, and that the power of heaven is the same as that of earth! There is also Franklin in the United States, who risked his life to unify the sky and earth electricity.

It's the same thing! Eliminate the mystical concept of heaven and earth of mankind, and look at the problem from a scientific point of view, not God! Human beings can be in awe of nature, but they cannot be superstitious!

That's why apples fall from trees.

The law of gravitation and Newton's three laws.

He also founded calculus.

<> Isaac. Newton was a brilliant physicist, astronomer, and mathematician, and the founder of the classical system of mechanics.

Specifically, Newton's major achievements in science are in several ways:

1. Astronomical achievements: Newton discovered the law of gravitation from years of research and analysis of the laws of celestial motion.

Newton found the correct mathematical expression for the law of gravitation and pointed out that it has universal significance. The forces of motion of all celestial bodies in the universe, as well as all objects in gestation, whether macrocosmic, microcosmic, animate, inanimate, etc., are subject to the law of gravitation.

2. Achievements in optics: the correct argument that daylight is composed of colored light explains the phenomenon of rainbows and lays the foundation for modern spectroscopy. Newton founded the "particle theory" of light.

3. Mathematical achievements: Newton founded the binomial theorem and completed calculus independently at about the same time as Leibniz in Germany.

4. Achievements in mechanics: Newton proposed a clear definition of "force", "mass" and "momentum", and compared them to Galileo.

The proposed "acceleration."

Connection. He summarized three laws: the first law, the second law.

and the third law.

Newton created the reflecting telescope in 1672. He used the gravitational force between the particles to prove that the external gravitational force of a sphere with a spherically symmetrical density can be replaced by a mass of the same mass in the center position.

He also used the principle of gravitation to explain the various phenomena of tides, pointing out that the size of the tides is not only related to the phase of the moon, but also to the orientation of the sun. Newton predicted that the Earth was not a positive sphere. Precession is caused by the sun's perturbation of the equatorial protrusion.

The objective lens used in the reflective telescope is a concave mirror, which is spherical and aspherical; The optical systems of the more common reflecting telescopes are Newtonian reflecting telescopes and Cacegrain reflecting telescopes. The performance of a reflecting telescope is highly dependent on the objective lens used.

The spherical objective lens that is usually used has a special brace that is easy to process, but if the focal ratio of the telescope is relatively small, there will be a more serious optical spherical aberration; In this case, the object will become blurry because the parallel rays cannot be focused precisely on one point.

Therefore, the objective lens of large-aperture, high-intensity reflecting telescope is usually aspheric design, and the most common aspherical objective is a parabolic objective. Due to the geometry of the parabola, the light rays parallel to the optical axis of the objective lens will be precisely focused on the focal point, thus greatly improving image quality. But even telescopes with parabolic objectives still have off-axis aberrations.

Newton's main achievements were: the Three Laws of Mechanics; The law of gravitation.

Isaac Newton (January 4, 1643 – March 31, 1727), Sir Laurel, President of the Royal Society, a famous English physicist, mathematician, encyclopedic "all-rounder", author of "Mathematical Principles of Natural Philosophy" and "Optics".

In his 1687 book The Laws of Nature, he described gravitation and the three laws of motion. These descriptions laid the foundation for the scientific view of the physical world for the next three centuries and became the basis for what is now known as early engineering in the Great Generation. By demonstrating the consistency between Kepler's laws of planetary motion and his theory of gravity, he showed that the motion of terrestrial objects and celestial bodies follows the same laws of nature; It provided strong theoretical support for the heliocentric theory and promoted the scientific revolution.

In mechanics, Newton clarified the principle of conservation of momentum and angular momentum and proposed Newton's laws of motion. Optically, he invented the reflecting telescope and developed a theory of color based on the observation that a prism diverges white light into the visible spectrum. He also systematically formulated the law of cooling and studied the speed of sound.

Mathematical achievement

Most modern historians believe that Newton and Leibniz independently developed calculus and created their own unique notations for it. According to those around Newton, Newton developed his method a few years before Leibniz, but he published almost nothing until 1693, and it was not until 1704 that he gave a complete account. In the meantime, Leibniz had published a complete account of his method in 1684.

Newton's classic contribution is Newton's Three Laws of Motion!

First, the law of inhabitation.

Second, the law of acceleration.

Third, the law of action and reaction.

…You can explain it in detail!

Famous – the law of universal gravitation; the Three Laws of Classical Mechanics; Newtonian telescopes in optics, decomposition of polychromatic light, particulate nature of light.

Calculus in mathematics, the binomial theorem!