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Anonymous users2024-02-15Electric lamps include incandescent bulbs, arc lamps, and fluorescent lamps.
The incandescent lamp is made by using the principle that high-temperature objects can emit light, and the tungsten filament is heated to a high temperature of thousands of degrees, and the tungsten filament emits light.
Arc lamps use the principle of arc light, which makes ionized high-temperature ions emit light.
Fluorescent lamps are made using the principle that phosphors can emit visible light when exposed to rays. Since it does not require high temperatures, it has a relatively high efficiency and is a promising light source.
When an electric current is passed through an electric lamp, the electrical energy is converted into heat energy, and it is the filament of the electric lamp that generates light that heats up, depending on what electric light it is. Are you sure you're asking about physics? You can send the online game version.
The principle of an incandescent lamp is very simple, that is, an electric current passes through the filament, produces a high temperature, reaches an incandescent state, excites the electrons in the outer shell of the nucleus, and produces light waves.
The principle of fluorescent lamp is that mercury vapor emits rays under the impact of high-voltage electricity and hits the phosphor of the lamp, which excites the phosphor to emit light.
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Anonymous users2024-02-14Because scientists invented the lamp to make it shine.
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Anonymous users2024-02-13Because, someone turned on the lights.
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Anonymous users2024-02-12Nonsense! The light, if it doesn't turn on, is it still called a light?!
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Anonymous users2024-02-11And then the clarinet is probably sure how easy it is to remain?
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Anonymous users2024-02-10The light comes on itself and may be the cause of the line connection.
Due to the high temperature, the two lines are connected, and the lights will light on their own.
Tips for buying lights:
1. When buying lamps and lanterns, you should go to the brand store to buy, now the market is more well-known than the cover of the higher reputation of the lamp brand and Philips, NVC lighting, Oupu Panasonic, etc., the lamps produced by these brands are not only more guaranteed in quality, but also comprehensive after-sales service, once the problem arises when using, it can be solved in time.
2. The safety of the use of lamps and lanterns is very important, so when purchasing lamps and lanterns, you can ask the merchant to report 3C to understand where the lamps are suitable for installation. If you are buying lamps and lanterns in the bathroom, you should choose lamps with good waterproof and mildew resistance.
3. In the process of purchasing lamps and lanterns, we should also take into account the energy-saving nature of lamps and lanterns, if you buy lamps with good energy-saving performance, you can reduce the energy consumed in the use of lamps and lanterns, so as to save electricity costs.
4. In addition, it is necessary to choose the appropriate lamps and lanterns according to the use area of the lamps, if it is a bedroom, you should not buy spotlights, if it is a room for the elderly, you should choose lamps with a relatively high degree of illumination. <>
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Anonymous users2024-02-09If the lights in your home don't turn on the switch but turn on on their own, it's probably because of a problem with the wiring. It may also be due to a power outage at home and then accidentally turning on the light switch. When encountering such a problem, first of all, we have to check whether the switch is faulty, if the switch of the light can still be used normally, then the light itself is not ready to worry.
But if the switch of the lamp fails, it can only mean that the circuit of the switch is suspicious of Gao Jian, and it is better to ask an electrician to come to the door to repair the chain pants.
There are many reasons why the lights come on themselves, but most of them are related to the switch. There are also some to see what kind of lamp, such as fluorescent series, if the switch does not distinguish between the zero live line, the switch controls the zero line will also see the light on at night when the light is dark, but the bright light is not strong, and there are some voice-controlled, sound and light controlled, and the light will be on when the sound is loud.
First, the failure of the vehicle engine emission system, this fault is the most important reason for the vehicle engine failure lamp, and it is also one of the most reasons, if this fault phenomenon occurs, most of them are the cause of carbon deposition in the vehicle engine, or the problem of fuel quality. The suggestion is to clean up the carbon deposits in the throttle and intake tract, and then clean the carbon deposits in the combustion chamber. >>>More
I don't know where your turtle is raised, if you throw it in the pool for a long time to raise turtles and rarely come ashore, it is easy to produce green moss on the shell of the turtle, some are fungal branches, like long hairs or a green layer covering the shell, and some are covered"Green-haired turtle"It is said that such a variety is but the algae above, the moss is much denser, and it is also a kind of appreciation of the variety pull, but it does not affect the normal growth of the turtle itself (but some goldfish will also have white hair, that is, mold ** dyeing).If you feel that the green looks disgusting, you can use a toothbrush to brush and rinse, you can also sprinkle some salt in the water, change the water every day in summer, in fact, the turtle does not stay in the water for a long time all day, you can also choose free-range, put a shallow basin in the garden or balcony (the turtle can climb into it by itself) on the line, the water does not need too much, the turtle will find water by itself, so that the shell is dry for a long time, the shell is on"Green"Nature will disappear. >>>More
You need to turn on your low beams when meeting the car.
The Road Traffic Safety Law clearly stipulates that at night, vehicles should switch to low beams when they are 150 meters away from oncoming vehicles in the opposite direction; At night, through sharp bends and traffic lights. >>>More
In layman's terms, it means that a certain thing or thing, or language, expression, or something can successfully attract people's attention, that is, to grab attention and make people have to notice.