"The Process of Exploring the Microscopic World" Particles and the Universe PPT Courseware 3

Description

"The Process of Exploring the Microscopic World" Particles and the Universe PPT Courseware 3

spark of thought

"Just like a green wall is made up of tree trunks, branches and leaves, things in nature are made up of invisible tiny particles - atoms. Atoms cannot disappear, but they cannot be created out of nothing."

——Democritus

Democritus's atomic theory lacked scientific experimental basis and was not recognized by people for a long time.

It was not until the 17th century that scientists represented by the "fathers of chemistry" Dalton and Boyle revived and established atomic theory through a large number of experiments.

"Father of Chemistry" Dalton (1766-1844)

In 1811, the Italian scientist Avogadro further pointed out that matter is generally not composed directly of atoms, but of molecules composed of several atoms combined.

discovery of electrons

In 1897, British physicist Thomson discovered that cathode radiation can be deflected under the action of an electric or magnetic field in the same direction as negatively charged particles, thus discovering electrons.

nano technology

Nanotechnology is an emerging technology that emerged in the 1990s. It is a brand-new technology that studies the movement patterns and characteristics of electrons, atoms and molecules in a space of 0.10 to 100 nanometers (one billionth of a meter).

Nano titanium oxide

Nano-titanium is corrosion-resistant. Objects coated with it can withstand boiling water and can be immersed in seawater for 10 years without damage. It also has miraculous self-healing capabilities and can be used as a general repair agent for metal and non-metal materials.

Keywords: Teaching courseware of particles and the universe, teaching courseware of the process of exploring the microscopic world, download of Beijing Normal University version physics PPT courseware for the second volume of the ninth grade, download of the physics slide courseware of the ninth grade, download of PPT courseware of particles and the universe, PPT courseware of the process of exploring the microscopic world Download, .PPT format;

For more information about the PPT courseware "Particles and the Universe: The Process of Exploring the Microscopic World", please click on the PPT courseware "Particles and the Universe: The Process of Exploring the Microscopic World" ppt tag.

"The Process of Exploring the Microscopic World" Particles and the Universe PPT Courseware 4:

"The Process of Exploring the Microscopic World" PPT Courseware on Particles and the Universe 4 Democritus's atomic theory lacked scientific experimental basis and was not recognized by people for a long time. Until the 17th century, Dalton and Boyle, the fathers of chemistry, were Through a large number of experiments, the representative scientists...

"The Process of Exploring the Microscopic World" PPT Courseware on Particles and the Universe 2:

"The Process of Exploring the Microworld" Particles and the Universe PPT Courseware 2 Thomson's Atomic Model At the end of the 19th century, Thomson discovered electrons and knew that electrons are components of atoms. Since electrons are negatively charged, atoms are neutral. , so it is inferred that in the atom...

"The Process of Exploring the Microscopic World" PPT courseware on particles and the universe:

"The Process of Exploring the Microworld" PPT Courseware on Particles and the Universe Teaching objectives Understand the process of human understanding of exploring the microstructure of matter Understand the discovery process of electrons and the nuclear structure model of atoms Understand the quark model Understand the application of nanomaterials 1. The fire of thinking...

File Info

Update Time: 2024-06-30

This template belongs to Physics courseware Beijing Normal University Ninth Grade Physics Volume 2 industry PPT template

Preview