Light-mediated biological effects refer to the physiological changes in the human body caused by exposure to light radiation. The mechanism of light-mediated biological effects varies depending on different pathways. Firstly, light can directly act on the human eye, transmitting visual information and inducing visual effects. Secondly, light can regulate the body’s physiological rhythms by a...
Principle of Illuminance Meter Testing: An illuminance meter is a device used to measure illuminance (light intensity), based on the principle of photoelectric effect. The photovoltaic cell used in illuminance meters is a type of photoelectric component that directly converts light energy into electrical energy. When light strikes the surface of the photovoltaic cell, it passes through a metal fil...
The needle flame test and the glow wire test are both used to assess the fire resistance of materials, but they differ in their testing principles and applications. Needle Flame Test: The needle flame test evaluates the risk of small flames that may occur under fault conditions in equipment. Specifically, this test utilizes a specified size (diameter of 0.9 millimeters) needle-like burner, which d...
Environmental testing refers to exposing products or materials to specific conditions, either natural or artificial, to evaluate their performance under realistic storage, transportation, and usage scenarios. This type of testing is crucial for ensuring product quality and performance. High-low temperature test chambers typically involve three main types of testing: natural exposure testing, field...
Electromagnetic Compatibility Testing (EMC): Ensuring Smooth Operation of Devices Electromagnetic Compatibility Testing (EMC) refers to the ability of devices or systems to operate in their electromagnetic environment in compliance with specified requirements and without causing unacceptable electromagnetic interference to surrounding equipment. EMC design and testing are complementary processes, ...
The high and low temperature test chamber is an essential device for conducting reliability tests on industrial products. It simulates high and low temperature environments to examine the performance indicators of various products, including electronic appliances, automotive components, aerospace equipment, and marine weaponry. The principle behind the operation of the high and low temperature tes...
What is Electrostatic Discharge (ESD)? Electrostatic Discharge (ESD) is one of the common sources of interference in electronic devices. According to the national standard GB/T17626.2 (equivalent to the international standard IEC61000-4-2), Electrostatic Discharge (ESD) Immunity TestingESD immunity testing is an essential step to ensure devices are protected from the disruptive effects of electros...
Introduction: The spring impact hammer, also known as a spring impactor, is an instrument used for impact testing. It releases a specific amount of impact energy through an internal impactor, applying it to the surface of the specimen, thus facilitating impact performance testing of materials or products. Applications and Standards: The spring impact hammer is designed and manufactured according t...
The ozone aging test chamber is designed specifically to simulate and test the aging performance of materials in an ozone environment. Widely used in the research, production, and quality control of polymer materials such as rubber, plastic, and coatings. This article provides a detailed overview of the ozone aging test chamber’s basic principles, technical parameters, usage methods, and pre...
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