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Anonymous users2024-02-05Electric lamp, the exact technical name is incandescent lamp. One of the artificial light sources. It is a lamp that is used to emit light by heating the filament to an incandescent state with an electric current.
The bulb housing is made of glass, which keeps the filament under a vacuum, or inert gas at low pressure, to prevent oxidation of the filament at high temperatures. Only 7% or 8% of its electrical energy is converted into visible light, and more than 90% of its electrical energy is converted into heat, and the luminous efficiency of incandescent lamps is very low, however, it is a pioneer in the world of electric light. Modern incandescent lamps generally have a lifespan of about 1000 hours.
Electric lamps are made according to the principle that electricity generates heat. Electric lamp is to convert electrical energy into light energy, to provide lighting equipment, its working principle is: electric current through the filament (tungsten filament, melting point of more than 3000) when the heat is generated, the spiral filament continues to gather heat, so that the temperature of the filament up to more than 2000, the filament in the incandescent state, like the red-hot iron can shine and emit light.
The higher the temperature of the filament, the brighter the light emitted. Therefore, it is called incandescent lamp. From the perspective of energy conversion, when the lamp emits light, a large amount of electrical energy will be converted into heat energy, and only a very small part can be converted into useful light energy.
The light emitted by electric lamps is panchromatic light, but the proportion of each color is determined by the luminescent substance (tungsten) and temperature. The imbalance in proportions leads to a color cast in the light, so the color of the object is not realistic under incandescent light.
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Anonymous users2024-02-04In the lamp circuit, the resistance of the wire is much smaller than that of the filament, and the same current flowing through the wire basically does not heat, but when it flows through the filament with larger resistance, it will heat up, and when the temperature is relatively high, the filament will emit light. This is the principle of incandescent lamps.
Electric lights, that is, artificial lighting appliances that use electricity as an energy source, can convert electricity into light, which has greatly promoted the progress of human civilization. Common types of electric lamps are incandescent lamps, fluorescent lamps, LED lamps, etc.
The earliest practical electric spine limb lamp was the incandescent lamp, but long before the birth of the incandescent lamp, the Englishman Humphrey David used 2000 batteries and two carbon rods to make the arc lamp, but this kind of arc lamp is too bright, produces too much heat and is not durable, and it cannot be used in ordinary places.
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Anonymous users2024-02-031.Incandescent lamp.
Uses: living rooms, living rooms, lobbies, guest rooms, shops, restaurants, corridors, meeting rooms, courtyard lighting.
2.Tungsten halogen lamp.
Uses: conference rooms, exhibition halls, living rooms, commercial lighting, film and television stages, instrumentation, automobiles, aircraft and other special lighting.
3.Fluorescent lamps are commonly known as fluorescent lamps.
Uses: Tunnel code search, port, wharf, mine lighting, etc.
4.High-intensity gas discharge lamps.
Usage: Road lighting, indoor and outdoor industrial lighting, commercial lighting.
5.High-pressure sodium lamps.
Uses: road lighting, flood lighting, square lighting, industrial lighting, etc.
6.Metal halide lamps.
Uses: Industrial lighting, urban lighting engineering lighting, commercial lighting, stadium lighting and road lighting, etc.
7.Ceramic metal halide lamps.
Uses: shopping malls, shop windows, highlight displays and commercial street lighting.
8.High-frequency induction lamp.
Uses: Public buildings, shops, tunnels, pedestrian streets, high-pole street lights, security and safety lighting and other outdoor lighting.
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Anonymous users2024-02-02Electron energy level transitions.
It's as simple as that.
Don't forget to think about it.
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Anonymous users2024-02-01The principle of electric light, don't just say that electric light was invented by Edison.
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Anonymous users2024-01-31Electricity produces light energy and can also be said to produce heat energy. Principle: When the current passes through the filament (tungsten filament, the melting point reaches more than 3000 degrees Celsius), the spiral filament continuously gathers the heat, so that the temperature of the filament reaches more than 2000 degrees Celsius, and the filament emits light like a red-hot iron can shine.
The higher the temperature of the filament, the brighter the light emitted. Electric lamps are made according to the principle that electricity produces electric current and resistance.
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Anonymous users2024-01-30Electric lamps are made based on the principle that an electric current flows through a resistance to produce heat and light energy.
The current flowing through the filament heats up, the temperature rises rapidly, and when the temperature rises high enough, it starts to glow.
The filament material of the electric lamp is tungsten filament, its melting point is 3410, and the working temperature of tungsten filament used in incandescent lamp is often between 2300 and 2800, at this temperature, it can emit strong light for illumination.
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Anonymous users2024-01-29Electric lamps are made according to the principle that electricity produces electric current and resistance.
The balance of force is more appropriate to explain, the historical balance of the aircraft acting on the aircraft when it moves at a uniform speed in the air: the forward and backward resistance of the aircraft engine is equal, the downward gravity of the aircraft and the upward thrust of the aircraft are equal, and there is a force decomposition when the upward drag and backward resistance are decomposed, that is, the thrust of the wing of the " type is affected by the air to the backward and upward thrust, and the take-off and landing, acceleration and deceleration of the aircraft are achieved by changing the angle of the wing and adjusting the speed of the engine.
According to the theory of traditional Chinese medicine, the medicine used to diagnose and prevent diseases is called traditional Chinese medicine, and the medicine used to treat diseases with traditional Chinese medicine is called traditional Chinese medicine, in the theory of yin and yang and the five elements, (the science of the ancients, equivalent to the current hypothesis, for the present is a certain simple scientific doctrine, most of which is the essence theory,) popular era, Chinese medicine is a practical medicine, at that time, people based on the theory of yin and yang and the five elements to rise Chinese medicine to a set of theories of medicine (equivalent to finding a more perfect statement that can be explained), Therefore, the essence of traditional Chinese medicine is, of course, the theory of yin and yang and the five elements, yin and yang, sheng keke, the human body is divided into the outside of the body, and it belongs to yin and yang, and it can also be yin and yang in the body, which belongs to the five elements, the cycle is endless, and life is continuous, all diseases are yin and yang and the five elements are out of balance, and according to the yin and yang five elements disorder, as for how to diagnose from the technique, from the theory of the eight steel syndrome differentiation, the drug also has the attributes of yin and yang and the five elements in traditional Chinese medicine, cold and heat, etc. Then use these drugs so that the patient can be regulated, so that the disease is **. I don't know if you're satisfied with that.
Disdain the above, you ask who invented drift, and you don't ask about the definition of drift. Drift was invented by former Japanese GT racer Keiichi Tsuchiya.
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