Price of magnesium lamp and introduction of magnesium lamp

Lead: If you ask, do you know the spotlight? You may not know this, but the rabbit introduced you to the spotlight today. In fact, everyone is no stranger to the spotlight. A magnesium light is the flash of a camera. Explain the blow. As we all know, early cameras used a special flash, which was made of magnesium powder, so it was called magnesium light. But with the development of science and technology, magnesium light is no longer used, and now it is replaced by electronic flash. Electronic flash is now used in optical and digital cameras. The following is a detailed introduction about the magnesium light.

First, the principle of flash.

Both magnesium and xenon can be used in photographic flash. Xenon flashlights can be used thousands of times, while ordinary magnesium lamps can only be used once.

Xenon uses physical properties: when the shutter button is pressed, a switch of the camera instantly starts the flash; At the same time, the high-voltage power stored in the flash capacitor is discharged in the xenon (Xe)-filled lamp tube during the flash, resulting in a short-term intense flash.

Second, the chemical properties of magnesium

It has strong reducibility, can react with hot water to release hydrogen, and can produce dazzling white light when burning. Magnesium does not react with fluoride, hydrofluoric acid and chromic acid, nor is it corroded by caustic alkali. However, it is soluble in organic and inorganic acids, and can be directly combined with nitrogen, aldehyde, alcohol, phenol, amine, fat and most oils. Magnesium has only slight or no effect. However, it reacts violently with halogenated hydrocarbons under anhydrous conditions (Grignard reagent is generated). Magnesium can react with carbon dioxide, so magnesium combustion can't be put out with a carbon dioxide fire extinguisher.

Third, the price of magnesium lamps

1, magnesium light

Industry: communication electronics? |? Communication electronics: communication products

Category:? Testing and certification? Certification 2.00 yuan

2、

Armani Armani new magnesium powder cake,

Price: 700 yuan

Magnesium lamps are rare. There are two types of old-fashioned magnesium lamps. One is burnt magnesium powder, which is quite unsafe and can't be found. There are also disposable magnesium wire bulbs that need to be ignited by batteries. Because there is no spark, it is relatively safe, but the use cost is too high. The second-hand price of a light bulb is at least around 50 yuan, which is not affordable for ordinary people.

At present, the most commonly used flashlight is electronic, cheap and safe. There are also many domestic products: Yongnuo and Yin Yan, and Nikon, Canon, Metz and Dead Horse are imported.

I think many friends will ask such questions. Why do people still use magnesium lights now? Has the electronic flash been turned off? In fact, this is just a professional demand. Some old photographers still use film cameras. They think that no matter how good the electronic camera is, it doesn't feel like the old camera at that time. For example, friends who like to use magnesium lights, because they feel comfortable and give people a sense of comfort and security, some people still insist on using magnesium lights. The spotlight we are going to talk about today is right here. For more information, please visit this website for further investigation.

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