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Table of Contents What is solar radiation? Solar radiation is the energy emitted by the sun into the surrounding space in the form of electromagnetic waves. The energy transmitted by solar radiation is solar radiation energy. The radiation received by the Earth is only one part in 2.2 billion of the total radiant energy emitted […]
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Table of Contents What is photosynthetically active radiation? The spectral component of solar radiation that is effective for plant photosynthesis is called photosynthetically active radiation (PAR), with a wavelength range of 400-700 nm, which basically coincides with visible light. The proportion of photosynthetically active radiation in direct solar radiation increases with the increase of the
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Table of Contents What is TVOC? Is it a gas? TVOC refers to Total Volatile Organic Compounds, which is one of the air quality detection standards, mainly including benzene, alkanes, aromatic hydrocarbons, alkenes, halogenated hydrocarbons, esters, aldehydes, ketones and others. Organic matter with a saturated vapor pressure exceeding 133.32pa at room temperature and a boiling
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Table of Contents What is visibility? Visibility refers to the maximum distance at which a person with normal vision can identify a target from the background. This is actually a very subjective indicator, and different people may get different visibility. Therefore, the value of visibility is never absolute. Weather visibility depends on the current meteorological
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Table of Contents The Internet of Things (IoT) is one of the hottest technology words in the past few years, which can collect, share, analyze and create value from data. However, without accurate data, IoT will become a useless technology. Therefore, the relationship between IoT and IoT sensors and actuators is complementary. IoT consists of
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Table of Contents Water leak detection is designed to detect and repair leaks in pipes, equipment or building structures in a timely manner to prevent property damage and high repair costs. Through monitoring, the source of leaks can be quickly identified to avoid water stains, mold growth and potential damage to building structures, ensuring a
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Table of Contents As an advanced and well-known technology, ultrasonic sensor is widely used in various consumer and industrial fields. When adding distance measurement or detection functions to products, ultrasonic sensor is a good choice. In addition, it has wider applicability and higher reliability in hardware upgrades and software adaptations. What is an ultrasonic sensor?
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Table of Contents We know that the risk of vehicle accidents on the road increases exponentially during heavy rain, fog and snowfall. According to the National Highway Traffic Safety Administration (NHTSA), the risk of a fatal accident is about 75% higher in heavy rain than in normal weather . Caltrans data shows that the risk
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Table of Contents What are weather instruments? Weather instruments, are specialized equipment used in weather forecasting, weather monitoring and other meteorological service areas. It can be categorized into two categories: ground weather observation instruments and high-altitude weather detection instruments. Currently used weather instruments can be broadly divided into two categories: Ground-based observation instruments: deployed at
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Table of Contents What is the wind speed and direction? Wind is a physical quantity that represents the movement of air currents. It has both a numerical magnitude (wind speed) and a direction (wind direction). Wind speed is a measure of the horizontal distance the wind travels per unit of time. The units are often
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