On my desk, there is a beautiful little desk lamp. My mother bought it for me in elementary school. I spent a happy childhood with the small desk lamp, and I like it very much.
My desk lamp is really beautiful! It is dressed in blue and white, and there is a big bracket under the lamp. It has two lamps of the same length and thickness. There are two buttons on the bracket, one is the switch button and the other is the light button. I use it every night when I do my homework. It illuminates me with bright eyes until late at night. It never complains. I just blink twice when I am too tired, and then continue to light up. In my heart, he is an unknown hero. Without it, I can't finish my homework smoothly at night. Is my good partner.
But once, I turned on my small desk lamp as usual, only to find that it didn't work. I vaguely saw some black smoke in its eyes. I looked distressed and called my father. Father said, "It's your friend. It usually helps you. Now it's your turn to help. " So I took two new lights, changed them, turned on the switch and found that all the lights were on. My small desk lamp has regained its usual luster, and I can finally get busy with my homework.
A small desk lamp burns itself and illuminates the advantages of others, which is worth learning from all of us. We should learn from its self-denial, selfless dedication and obscure persistence.
Description of electric light 2 Electric light, that is, artificial lighting appliances with electricity as energy source, can convert electricity into light, which greatly promotes the progress of human civilization.
Common types of electric lamps are incandescent lamp, fluorescent lamp and LED lamp. Electric light is a device that converts electric energy into light energy to provide lighting, which appeared in the second industrial revolution. The earliest practical electric lamp was incandescent lamp, but long before incandescent lamp was born, an Englishman Humphrey David made arc lamp with 20xx batteries and two carbon rods. But this kind of arc lamp is too bright and generates too much heat, which is not durable and can't be used in general places.
1854, Henry Goldbert, a German watchmaker who immigrated to the United States, made the first practical electric lamp in a vacuum glass bottle with a carbonized bamboo wire, which lasted for 400 hours, but he did not apply for a patent in time. 1860, joseph swan, an Englishman, also made a carbon filament lamp, but he failed to obtain a good vacuum environment to make the carbon filament work for a long time. It was not until 1878 that the vacuum technology in Britain developed to the required level that he invented a light bulb powered by carbon wire under vacuum and obtained a British patent. Swan's own house is the first private house with electricity lighting in Britain. 1874, two electrical technicians in Canada applied for a patent for electric light: nitrogen was filled under a glass bulb and a carbon rod was electrified to emit light, but they did not have enough financial resources to continue to improve this invention, so they sold the patent to Edison in 1875. Edison tried to improve the filament after purchasing the patent, and finally made a carbonized bamboo filament lamp that could last for 1200 hours in 1880. However, after the US Patent Office ruled that Edison invented the carbon filament incandescent lamp, the patent was invalid. After years of litigation, Henry Goebbels won the patent, and finally Edison bought the patent from Goebbels poor widow. In Britain, Swan accused Edison of patent infringement. Later, they settled out of court and set up a joint venture company in Britain on 1883. Swan later sold his shares and patents to Edison.
One night, I came back from playing basketball and patted the ball in the corridor. "Bang, the dark corridor was suddenly lit up by the street lamp next to it. I looked up and it turned out to be a voice-activated light. I want to know why voice control lights are different from other lights. They don't need someone to turn them on, but they can light up when they hear the sound. Will it shut down automatically? I began to explore the mystery with a series of question marks.
I took a tool to open the shell of the voice control light and saw many circuit boards inside. Later, I found that the voice control lamp is composed of microphone, audio, amplifier, bottle washing circuit, voltage doubling rectifier circuit, amplitude recognition circuit, constant calendering opening circuit and controllable delay switch circuit.
Knowing this, I was thinking: How did the light come on? I lift my chin and think with my head. The sound vibrates to the microphone, and the microphone transmits the sound to various circuits. Finally, turn on the light by turning on the circuit for processing. A lamp is like an intelligent ear. When its "ears" hear someone coming, it will automatically light up to light the way for people. When people leave, it will automatically turn off the lights if it can't hear the sound.
Knowing this, new problems arise. I wonder why electric lights have ears. I checked the information again, only to know that people installed a voice-activated switch for it. When it hears a certain intensity of sound, the switch will automatically turn on the power of the lamp. In this way, the "voice control light" is like having ears. I also found an interesting phenomenon: the voice control light doesn't light up during the day, no matter how loud you make it, and it only lights up at night when it makes a little noise.
Through the above analysis and reasoning. I have come to a conclusion that the sound control light is controlled by sound and light. To prove my conclusion, I did an experiment.
I turn on the power supply of the voice control light during the day, cover the light control original of the voice control light switch with my hand and make a sound, and the light will light up, so my conclusion is correct.
Through this discovery, I am very happy, after all, this is the fruit of my labor! From this, I also realized a truth: to be conscientious, as long as you observe more and do more, you can improve your innovation ability.
Description of electric lamp 4 In the dark night, a lamp stands alone on the roadside, emitting warm orange light and illuminating the road under the lamp. In the dark, it is like a lighthouse, leading a tired boat ashore and illuminating the people's road and the hearts of drifters.
This is just one of countless lamps in the dark, and it has made such a great contribution. There are many good people in the world who put this lamp on the road and lead the wanderers.
Therefore, the world is full of light and warmth, and there is hope.
However, there are also dark places in the world. Leng Ye oppresses people all night, making people unable to breathe. War, conflict and competition in officialdom have made darkness overcome light and put out the lights lit by good people. They put out the lights, darkened life and shattered hope. This is not allowed by lamps and lamplighters, so they try to make the darkness fade even if they can't end it.
These people devote themselves to hope and fight for it, because the wick is hope. When hope goes out, the light goes out. Therefore, hope breeds the lamp, and the light from the lamp also guards the hope.
That's why so many people around us are struggling to protect us. They hold the light, judge the darkness and spur the darkness. Police and security guards, for the sake of people's safety, do their best to shine searchlights into the depths of criminals' souls and destroy them; Firefighters, holding the torch of life, pierce the dark fog and bring back the dying people trapped in the dark to the light; Doctors, on the other hand, take the light of life out of the lampshade directly, race against time, inject it into patients, and try their best to dispel the shadows of darkness and death.
Light, flame and light protect our world and life from darkness, but we hardly realize that this kind of light will be produced as long as we press the switch. I don't know how many lamplighters it takes to dispel the darkness and turn on your light.
But we don't realize the existence of these lamplighters, because their behind-the-scenes work is really little known. However, without them, there would be no light and hope. Therefore, we should support and respect these behind-the-scenes lamplighters and safeguard the hard-won light emitted by each lamp.
Lights are so common, but they are also extremely important. Perhaps more important than a lamp is the lamplighter. Therefore, everyone can use their own hands to light a bright lamp for others and society and make it shine.
The light bulb, a kind of lighting source that glows and gives off heat by electric energy, was invented by Henry Goebbels (Edison actually found a suitable material, that is, he invented the incandescent lamp with strong practicability, and the light bulb appeared as early as 1854). The most common function of light bulbs is lighting. With the development of society, the use of light bulbs has also undergone different changes. At first, it may be for the convenience of production and life, but with the progress of society, the use of light bulbs has also changed obviously, and functional lights with different uses such as "automobile, beautifying environment and decoration" have begun to appear. Its accurate technical name is incandescent lamp, which is a kind of lamp that uses resistance to emit light and heats thin wire (usually tungsten wire in modern times) to incandescent lamp.
The periphery of the bulb is made of glass, which keeps the filament in vacuum or low-pressure inert gas to prevent the filament from oxidation at high temperature. When it comes to incandescent lamps, it is generally believed that electric light was invented by Thomas Edison, an American. But if the textual research is serious, another American, Henri Goebbels (Heinrich G? Bel) invented the same principle and material decades before Edison.
180 1 year, the British chemist David electrified the platinum wire to glow. He also invented the electric candle in 18 10, which was illuminated by an arc between two carbon rods. 1854, Henry Goebbels put a carbonized bamboo filament under a vacuum glass bottle to make it glow. His invention seems to be the first incandescent lamp with practical value today. The light bulb he tested at that time could last for 400 hours, but he didn't apply for a design patent immediately.
The role of lighting lamps is not only limited to lighting, but also the eyes of the family. More often, it plays a decorative role. Therefore, the choice of lamps and lanterns is much more complicated, involving not only safety and electricity saving, but also many factors such as material, type, style and taste. A good lighting may suddenly become the soul of decoration. There are many kinds of lighting lamps, such as chandeliers, ceiling lamps, table lamps, floor lamps, wall lamps and spotlights. There are many colors of lighting lamps, such as colorless, pure white, pink, light blue, light green, golden yellow, milky white and so on. When choosing lamps, we should not only consider the shape and price of lamps, but also consider the brightness, which should be defined as non-dazzling, safe, clear and soft light. According to the occupation, hobbies, tastes and habits of the occupants, we should also consider factors such as furniture placement and wall color. The size of the lighting lamp is closely related to the spatial proportion. When shopping, we should consider practicality and placement effect to achieve the overall harmony of the space.
Home is a private space, which has its own requirements of privacy and individuality, so the lighting design scheme needs to take this feature into account. The so-called personalization is usually reflected in a certain atmosphere or psychological feeling, such as a hall, a private meeting room or a holiday restaurant. These are all areas that need to emphasize the effect of atmosphere. In home lighting, unified requirements can be clearly put forward in some areas or spaces that need fine visual work, such as the operation desk in the kitchen, the makeup area in the bathroom, and the writing and reading area at home. Home lighting mainly changes according to the layout, decoration and living content of the room. When there is natural light during the day, it will have an impact on the selection and arrangement of lighting lamps.