Cause analysis, light source, image_Cause analysis of light source affecting image measurement results
Analysis of the reason why the light source affects the image measurement results: orange light with a wavelength of about 590nm, in the air, water, and quartz glass. The refractive index in diamond is about 1.00028131524 respectively. The wavelength and speed of light in air are basically the same as in vacuum. Generally, unless otherwise specified, the wavelength and speed mentioned above all refer to the wavelength and speed in the air or vacuum. Maxwell's theory can well explain the phenomena of reflection, refraction, interference, diffraction, polarization, and propagation of light in anisotropic media in the propagation process of light, but in terms of the interaction between light and matter, such as matter on light The use of electromagnetic theory still cannot give a satisfactory explanation for its absorption, dispersion and scattering. In 1900, when Planck was studying the problem of the wavelength distribution of blackbody radiation, he believed that harmonic oscillator radiation was discontinuous, and proposed the quantum theory of radiation. In 1905, Einstein also put forward the concept of light quantum when explaining the phenomenon of photoemission, which gradually formed a new theory of particles—quantity is lost. Quantum theory believes that light is composed of many light quanta. The energy of these light quanta is hv, of which h-6.6260693×10-34j's is called Planck's constant. The photoelectric effect, X-ray scattering and other experiments discovered afterwards confirmed the theory of light quantum and affirmed that light has particle properties. However, the phenomenon of light interference, diffraction, etc. must confirm that light has volatility. Facts make people realize that light has a wave-particle duality. The later development of quantum electrodynamics also better reflects the wave-particle duality of Ding Guang, so that people have a further understanding of the nature of light. Of course, this understanding is still approximate, but it is already closer to objective reality.
Hydraulic universal testing machines have very high accuracy requirements.
The hydraulic system is the power drive mechanism of the tensile testing machine.
The specific application of the electronic universal testing machine in the automobile manufacturing process: The electronic universal testing machine needs to be used for automobile parts.
Wave soldering refers to the molten solder (lead-tin alloy), sprayed by electric pump or electromagnetic pump into the solder wave required by the design, can also be formed by injecting nitrogen into the solder pool, so that it is pre-loaded The printed board of the component realizes the soft soldering of the mechanical and electrical connection between the solder end or the pin of the component and the pad of the printed board through the solder wave.
The frequency converter is a power control equipment that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply.
Electronic universal testing machine is a necessary equipment to control the quality of products.
The calibration operation of the electronic universal testing machine is still relatively unfamiliar to friends who use it for the first time.
Selective wave soldering defects and their prevention.
Testing machine, broadly speaking, is an instrument that verifies the quality or performance of a product or material according to the design requirements before it is put into use.
The tensile force is not an accurate value after being measured by the testing machine, and subsequent calculations are required to get the desired value.
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