How to choose a desk lamp

A desk lamp is a common daily item. It not only provides bright lights, but also spends almost every night with our working and studying partners. If the desk lamp is used improperly, this partner will also cause serious harm to us. Next, let's take a look at the techniques of using desk lamps.
Choice of desk lamp
1. White light bulbs: Scientific research has shown that vision is best under white light, so choose incandescent and matte lamps that can emit soft and uniform white light, rather than colored light bulbs.
2. The light bulb has the right degree: the degree is too low, the light hitting the book is very dim, and it is difficult for us to see the handwriting. This can cause vision fatigue deep anal dildo , and too long can cause myopia. If the bulb power is too high, too strong light will be reflected into our eyes with white paper, causing glare, and the pupils will continue to shrink, causing eye pain and headaches. In general, 25 - 45-watt incandescent lamps have the best brightness.
3. Suitable light bulb and shade: The size of the light bulb is the same as the shade, ensuring that the light bulb is just covered by the shade to prevent direct light from reaching our eyes.
Use of desk lamps
1. Appropriate height: Usually, when your eyes are 30 centimeters away from the book, you can see the writing without excessive fatigue. The height of the desk lamp is 40-50 centimeters away from the writing to ensure adequate lighting and a certain brightness in the surrounding environment. If the desk lamp is too low, the light will become smaller and the surroundings will become dark. Losing the reference object for long-distance viewing, the adjustment systems of the eyes are in a tense and compressed state of only looking at the close, which easily fatigue the eyes and accumulates rapidly, causing myopia in the light source. If the table lamp is too high, the light will directly shine into our eyes, causing glare. At the same time, the strong light at close range will cause light retention on the retina, the eye muscles will tighten, and vision will decrease.
2. Appropriate location: The configuration position of the desk lamp also has a great impact on vision. Many people write with their right hand, so the desk lamp should be placed in front of the left body. When writing, it will not form a shadow on the paper due to the blocking of the hand. Even if the light shining on the paper will not be reflected into our eyes squirting dildo , causing glare.
3. Don't just turn on the lamp: Many people are accustomed to reading meeting books before going to bed at night, but only turn on the bed headlights and lamp. However, this is very detrimental to eye health. The bedside lamp is emitted by the surface of an object g spot vibrator rose toy , and the lighting light is difficult to meet the visual needs, so it is difficult for the eyes to see clearly and feel comfortable. Generally speaking, reading by just turning on the desk lamp cannot last long. Generally, 10-20 minutes is more appropriate. People who like to study for a long time must turn on the lights at the same time. If there are children at home, when they are studying, even if they use eye protection lights, they should turn on the headlights to reduce the difference in light and dark inside the room.