Lighting has an important impact on human activities. In ancient times, people used oil, candles and other methods to obtain lights, and even used fireflies that could emit light at night as light sources.
Lighting has an important impact on human activities. In ancient times, people used oil, candles and other methods to obtain lights, and even used fireflies that could emit light at night as light sources.
During the period of the Jin Dynasty, there was a man named Ruqi who had been very hard-working since childhood. Even the night time was not willing to let it go. However, because the family was very poor, he could not buy the oil from the starting point lamp, so on summer nights, he caught many fireflies and placed them in the pouch with small holes to use the light of the firefly to read the book. As a result, the rumored ruts finally came to the fore, and finally the officials went to the palace to write a book. In addition, the ancient book "Ancient and Contemporary Secret Court" also recorded: "After taking the bladder and bladder, it was dried and dried, and it contained more than 100 pieces of firefly. It was tied to the shark's feet. The fish were of any size, and each ran its light and stayed together. It must be more." This is the story of the use of fireflies for the light fishing.
The firefly has a light emitter at the body's tail that contains three parts: the skin, the glowing cells, and the reflective layer. The light emitted by the luminescent cells appears brighter due to the reflection of the reflective layer. The main substances in luminescent cells are luciferin and luciferase. Luciferin is a source of light energy, and luciferase is a catalyst. When the fireflies start to move, their breathing speeds up, the body absorbs a lot of oxygen, oxygen enters the luminescent cells through the small trachea, and luciferin begins to generate an oxidation reaction under the catalytic action of the luciferase, which causes the abdomen to emit light. Because of the difference in the breathing rhythm of the fireflies, it forms when the light is dark and it looks like a twinkling "small star".
Due to the high efficiency of lucifer conversion of energy, only about 2% to 10% of the energy is wasted on heat, and the rest of the energy is used to emit light. Therefore, the glow of a fireflies can be called a “cold lightâ€. The home thinks this is a very ideal light. Incandescent light bulbs With the advancement of civilization, humans have tried various methods to obtain light sources.
Until October 21, 1879, in a dusty laboratory in New Jersey, USA, Edison sealed the tiny carbon fiber filaments in a glass bubble and used a vacuum pump to pump the air out of the glass bubble. The voltage is then stabilized and the filament becomes a very stable and bright light source. The era of electric lighting has since come.
Although there are countless types of forms, shapes, and colors of incandescent light bulbs, their composition includes lamp caps, filaments, gas filled in the bulbs, and bulbs isolated from the outside. A lamp cap is a device used to connect a light bulb to a lamp holder. A filament is a component that is actually used to emit light in a light bulb. In general, the higher the operating temperature of the filament, the larger the portion of the generated energy located in the visible light region. The filament was first made of carbon, but it was later changed to tungsten because of its high melting point, low resistance to damage, better spectral characteristics, and resistance to heat and cold. The inert gas is usually used for the filling gas, which can apply pressure on the filament and prevent the filament from evaporating. The bulb is used to isolate it from the outside world. If it is not isolated, the filament will quickly react with the oxygen in the air and burn.
When a filament with a large resistance passes an increasingly large current, the filament starts to generate heat and emits light until it reaches an incandescent light color. Incandescent light bulbs have since been modified to meet specific needs, so they can be subdivided into general lighting, high-voltage and low-voltage lamps, halogen lamps, and infrared lamps. However, in general, incandescent light bulbs cannot meet human needs if they are used as large-scale rooms or large-scale space lighting fixtures. However, for more than a hundred years, the invention of electric light has always played an important role in the history of human science. Fluorescent lamp Fluorescent lamp (or fluorescent lamp) can be said to be a very important invention of indoor lighting. Nowadays, most of the night indoor lighting in the world uses fluorescent lamps. Fluorescent tubes have several advantages such as longer lamp life, higher luminous efficiency, larger light area, and different light color than traditional light bulbs.
The structure of fluorescent lamps is usually an elongated cylindrical tube containing a very small amount of mercury and a small amount of inert gas (argon or helium). After electrification, the electrodes at both ends of the tube initiate high-voltage discharge, and the inert gas in the free tube generates an arc, which excites the mercury vapor to emit ultraviolet light with a shorter wavelength. Phosphor smeared on the inner wall of the lamp absorbs ultraviolet light and converts it into visible light. If you change the type of phosphor, you can get lighting suitable for different occasions, such as cool white light suitable for offices and factories, suitable for warm light in a warm social environment, as well as general household, school and other occasions of fluorescent lamps.
The use of fluorescent lamps meets the needs of most people in humans. Although various kinds of electric lights are still under development, as of the 20th century, it is still impossible to develop inventions that are more in line with human needs than fluorescent lamps. Although fluorescent lamps have many advantages, one of the biggest drawbacks is that fluorescent tubes are very power consuming, and most of the electric energy is consumed in thermal energy. In addition, the mercury in the lamp has the problem of environmental pollution. Therefore, the search for new lighting sources has always been a task for scientists and the business community. Light-emitting diodes, which began to develop in the late 20th century, have brought light to future lighting. In 1996, Nichia Chemical Co., Ltd. of Japan based on GaN blue light-emitting diodes, developed a blue LED excitation yttrium aluminum garnet phosphor to produce yellow fluorescence, the resulting yellow fluorescence and then mixed with blue light to produce white light (blue LED with YAG Phosphors) started the LED's entry into the lighting market.
The main structure of the white light emitting diode includes a diode at the bottom, a phosphor coated on the diode or lampshade, and a lampshade shielding the outside world. When the bottom diode (usually a semiconductor material) is excited by electric energy, electrons and holes are generated. When the electrons and holes are recombined, the diode emits first light (ultraviolet light or blue light). The first emitted light can be absorbed by the phosphor and converted into a second emitted light (visible light wavelength range). When the first emitted light absorbed by the fluorescent powder and the second emitted light emitted by the fluorescent powder are mixed, the light is obtained. White light.
With the use of different phosphors, the light emitting diodes can also have different colors of cool colors or warm colors like fluorescent tubes. In addition, after years of research and development, it has been found that the use of high-efficiency UV light-emitting diodes as the emission source is the next best choice for white light-emitting diodes to become lighting devices. Therefore, how to develop high-efficiency UV light-emitting diodes and phosphors of various colors suitable for use in ultraviolet light is a goal that everyone is striving for.
With the current advances in LED technology, the application of white LEDs has gradually begun, including indicator lights, portable flashlights, LCD screen backlights, automotive instruments and interior lights. The industry is more convinced that in the next 10 years, white light-emitting diodes will be widely used in lighting, becoming the dawn of human lighting in the 21st century.
Lighting has an important impact on human activities. In ancient times, people used oil, candles and other methods to obtain lights, and even used fireflies that could emit light at night as light sources.
During the period of the Jin Dynasty, there was a man named Ruqi who had been very hard-working since childhood. Even the night time was not willing to let it go. However, because the family was very poor, he could not buy the oil from the starting point lamp, so on summer nights, he caught many fireflies and placed them in the pouch with small holes to use the light of the firefly to read the book. As a result, the rumored ruts finally came to the fore, and finally the officials went to the palace to write a book. In addition, the ancient book "Ancient and Contemporary Secret Court" also recorded: "After taking the bladder and bladder, it was dried and dried, and it contained more than 100 pieces of firefly. It was tied to the shark's feet. The fish were of any size, and each ran its light and stayed together. It must be more." This is the story of the use of fireflies for the light fishing.
The firefly has a light emitter at the body's tail that contains three parts: the skin, the glowing cells, and the reflective layer. The light emitted by the luminescent cells appears brighter due to the reflection of the reflective layer. The main substances in luminescent cells are luciferin and luciferase. Luciferin is a source of light energy, and luciferase is a catalyst. When the fireflies start to move, their breathing speeds up, the body absorbs a lot of oxygen, oxygen enters the luminescent cells through the small trachea, and luciferin begins to generate an oxidation reaction under the catalytic action of the luciferase, which causes the abdomen to emit light. Because of the difference in the breathing rhythm of the fireflies, it forms when the light is dark and it looks like a twinkling "small star".
Due to the high efficiency of lucifer conversion of energy, only about 2% to 10% of the energy is wasted on heat, and the rest of the energy is used to emit light. Therefore, the glow of a fireflies can be called a “cold lightâ€. The home thinks this is a very ideal light. Incandescent light bulbs With the advancement of civilization, humans have tried various methods to obtain light sources.
Until October 21, 1879, in a dusty laboratory in New Jersey, USA, Edison sealed the tiny carbon fiber filaments in a glass bubble and used a vacuum pump to pump the air out of the glass bubble. The voltage is then stabilized and the filament becomes a very stable and bright light source. The era of electric lighting has since come.
Although there are countless types of forms, shapes, and colors of incandescent light bulbs, their composition includes lamp caps, filaments, gas filled in the bulbs, and bulbs isolated from the outside. A lamp cap is a device used to connect a light bulb to a lamp holder. A filament is a component that is actually used to emit light in a light bulb. In general, the higher the operating temperature of the filament, the larger the portion of the generated energy located in the visible light region. The filament was first made of carbon, but it was later changed to tungsten because of its high melting point, low resistance to damage, better spectral characteristics, and resistance to heat and cold. The inert gas is usually used for the filling gas, which can apply pressure on the filament and prevent the filament from evaporating. The bulb is used to isolate it from the outside world. If it is not isolated, the filament will quickly react with the oxygen in the air and burn.
When a filament with a large resistance passes an increasingly large current, the filament starts to generate heat and emits light until it reaches an incandescent light color. Incandescent light bulbs have since been modified to meet specific needs, so they can be subdivided into general lighting, high-voltage and low-voltage lamps, halogen lamps, and infrared lamps. However, in general, incandescent light bulbs cannot meet human needs if they are used as large-scale rooms or large-scale space lighting fixtures. However, for more than a hundred years, the invention of electric light has always played an important role in the history of human science. Fluorescent lamp Fluorescent lamp (or fluorescent lamp) can be said to be a very important invention of indoor lighting. Nowadays, most of the night indoor lighting in the world uses fluorescent lamps. Fluorescent tubes have several advantages such as longer lamp life, higher luminous efficiency, larger light area, and different light color than traditional light bulbs.
The structure of fluorescent lamps is usually an elongated cylindrical tube containing a very small amount of mercury and a small amount of inert gas (argon or helium). After electrification, the electrodes at both ends of the tube initiate high-voltage discharge, and the inert gas in the free tube generates an arc, which excites the mercury vapor to emit ultraviolet light with a shorter wavelength. Phosphor smeared on the inner wall of the lamp absorbs ultraviolet light and converts it into visible light. If you change the type of phosphor, you can get lighting suitable for different occasions, such as cool white light suitable for offices and factories, suitable for warm light in a warm social environment, as well as general household, school and other occasions of fluorescent lamps.
The use of fluorescent lamps meets the needs of most people in humans. Although various kinds of electric lights are still under development, as of the 20th century, it is still impossible to develop inventions that are more in line with human needs than fluorescent lamps. Although fluorescent lamps have many advantages, one of the biggest drawbacks is that fluorescent tubes are very power consuming, and most of the electric energy is consumed in thermal energy. In addition, the mercury in the lamp has the problem of environmental pollution. Therefore, the search for new lighting sources has always been a task for scientists and the business community. Light-emitting diodes, which began to develop in the late 20th century, have brought light to future lighting. In 1996, Nichia Chemical Co., Ltd. of Japan based on GaN blue light-emitting diodes, developed a blue LED excitation yttrium aluminum garnet phosphor to produce yellow fluorescence, the resulting yellow fluorescence and then mixed with blue light to produce white light (blue LED with YAG Phosphors) started the LED's entry into the lighting market.
The main structure of the white light emitting diode includes a diode at the bottom, a phosphor coated on the diode or lampshade, and a lampshade shielding the outside world. When the bottom diode (usually a semiconductor material) is excited by electric energy, electrons and holes are generated. When the electrons and holes are recombined, the diode emits first light (ultraviolet light or blue light). The first emitted light can be absorbed by the phosphor and converted into a second emitted light (visible light wavelength range). When the first emitted light absorbed by the fluorescent powder and the second emitted light emitted by the fluorescent powder are mixed, the light is obtained. White light.
With the use of different phosphors, the light emitting diodes can also have different colors of cool colors or warm colors like fluorescent tubes. In addition, after years of research and development, it has been found that the use of high-efficiency UV light-emitting diodes as the emission source is the next best choice for white light-emitting diodes to become lighting devices. Therefore, how to develop high-efficiency UV light-emitting diodes and phosphors of various colors suitable for use in ultraviolet light is a goal that everyone is striving for.
With the current advances in LED technology, the application of white LEDs has gradually begun, including indicator lights, portable flashlights, LCD screen backlights, automotive instruments and interior lights. The industry is more convinced that in the next 10 years, white light-emitting diodes will be widely used in lighting, becoming the dawn of human lighting in the 21st century.
Disposable vape pen Onlyrelx Hero4000 is portable and fashion disposable electronic cigarette, disposable ecigs pen are trending featured vape pen for vapors as it's safety and easy to use. Disposable vape pod,disposable vape, wholesale vape,vape wholesale,vape pen manufacturer and supplier.disposable vape pen,disposable electronic cigarette,disposable ecigs pen,disposable ecigs stick,disposable e-cigs pen,disposable vape factory,disposable vape pod,disposable vape device,vape pen,vape stick, vape wholesale,wholesale vape,customized dispsoable vape pen,customized vape pen,OEM&ODM disposable ecigs pen,disposable electronic cigarette wholesale, wholesale disposable electronic cigarette,distribute vape pen,vape pen distribute,high quality vape pen,high quality vape pod,rechargeable disposable vape pen,refillable vape pen,refilling electronic cigarette,rechargeable disposable electronic cigarette,refillable vape pod,disposable refillable ecigs,disposable refilling e-cigs pen,refillable e-cigs pen
Onlyrelx hero4000,Disposable Vape Juice,Mini Disposable Vaporizer Pen,Disposable Vaporizer Pen
Shenzhen Onlyrelx Technology Co.,Ltd , https://www.onlyrelxtech.com