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Time travel system. The prime mover system uses a mainspring as the energy storage element, and the stored energy generally has two types

Any use of energy-saving lamps as light sources, there will be strobe. Studies have shown that electromagnetic radiation and strobe are one of the ...

When it comes to LED desk lamps, everyone is familiar, and users include the elderly, middle-aged, working youth, students and so on

The alternating current in China is 50 Hz, and the brightness of the incandescent lamp changes 100 times per second.

Many parents buy eye protection lamps for their children in order to protect their eyesight. In fact, whether these lamps have eye protection effec...

Led lighting is a green light source: low operating voltage, low power consumption; stable performance and long life (generally 100,000 hours); imp...

High-quality light sources are the foundation of green lighting. High-quality light sources should have the following three characteristics.

Led is a semiconductor solid light-emitting device: it has the advantages of small size, light weight, high brightness, low energy consumption, lon...

There should be common sense of healthy lighting when using the lamp: for example, the optimal illuminance for reading has a great relationship wit...

There are four general types of light sources for writing desk lamps: incandescent lamps, halogen lamps, fluorescent lamps and LEDs.

According to the style classification: modern table lamp, antique table lamp, European table lamp, Chinese table lamp, luxury, simplicity, fashion ...

When the writing desk lamp is in the normal working position, the main optical performance requirements are three points