Optical formula college physics

The formula of physical optics in college: c=3× 108km/s, en = e1+12.6 =-1ev, x=kDλ/d, etc.

Optics is an important branch of physics; It is also a discipline related to optical engineering technology. 1846 Faraday found that the vibration plane of light rotates in a magnetic field; 1856 W Weber found that the speed of light in vacuum is equal to the ratio of electromagnetic unit to electrostatic unit of current intensity. They show that there is a certain internal relationship between optical phenomena and electromagnetic phenomena.

This is an electromagnetic wave. In physics, electromagnetic waves are described by Maxwell equations in electrodynamics. At the same time, light has wave-particle duality, and the particle nature of light needs to be described by quantum mechanics.

Wave-particle duality means that all particles or quanta can be described not only by particle terms but also by wave terms. This means that the classical concepts of "particle" and "wave" have lost the ability to completely describe the physical behavior in the quantum range.

The real formation of optics as a discipline should be counted from the time when the laws of reflection and refraction are established and the foundation of geometric optics is laid. The law of refraction was discovered by the Dutch mathematician Snitch, and it is the law that determines the direction of refracted light in the phenomenon of light refraction.

Learning method:

Learning is not a simple information accumulation, but more importantly, it contains the conflict between old and new knowledge and experience, and the reorganization of cognitive structure caused by it. The learning process is not a simple information input, storage and extraction, but a two-way interactive process of building new and old knowledge and experience, that is, the interactive process between learners and learning environment.

Form the habit of self-test, self-correction and self-correction. Self-test, timely feedback and evaluation, timely correction and remedy, and increase self-confidence. Reading with questions helps to concentrate and clarify the purpose, which is not only the requirement of intentional learning, but also the necessary condition of discovery learning.