The difference between cool white and warm white is the difference in color. Warm white is more conducive to our health. At night, warm-light lamps are less stimulating than cold-light lamps, which also helps to promote sleep.
The cool white color is the same as the white color. It belongs to a cool color and is generally not suitable for use at home, because cool white emits blue light at night, which suppresses the body’s production and helps sleep melanin.
The warm white color is milder and is a warm color. Many people in life like to use warm colors to decorate the home environment. It looks warm and beautiful, and it is more conducive to sleep.
Because the color of warm white is more beneficial to the human body than cold white, warm white is more used at home than cold white, and the application range of warm white in life is more extensive.
Devices such as smartphones and tablets usually use LED lighting, and the blue light they emit may inhibit the body from producing melatonin that helps people fall asleep. The effect of orange light may be more the opposite of blue light: the subject said that after wearing orange glasses every night during the week, he became more sleepy. The boys participating in the experiment were monitored in the laboratory. Like ordinary teenagers, they watched the electronic screen for an average of several hours before going to bed every night.
This study involving 13 teenage boys showed that subjects wearing orange glasses (also known as blue-blocking glasses) every night during the week prevented melatonin from inhibiting the effect, and they were more likely than when wearing transparent glasses. drowsiness.
The blue part of the spectrum in LED lighting can inhibit the body’s production of melatonin, which is a hormone that helps people fall asleep.
Research indicates that older people may be less affected by blue light. But for most people, Blu-ray is still a problem. A previous study involving 20 adults between the ages of 18 and 68 found that the sleep quality of those wearing amber glasses three hours before bedtime was significantly better than the control group wearing yellow contact lenses that only blocked ultraviolet light.
Devices such as smartphones and tablet computers often use light-emitting diodes, or LED lighting, which often emits more blue light than incandescent products. TVs with LED backlights are another source of blue light, but their viewing distance is generally much farther than small screens such as mobile phones, and the impact on the human body should be relatively small.
The study also pointed out that LEDs are also becoming more and more popular in indoor lighting, but if it is used at night alone, a warm white light bulb with less blue light is a better choice than a cold white light source.
But orange glasses are not a panacea, and blue light shielding does not solve all problems. In addition to color, the intensity of the light also affects sleep, she said, and not all brands of orange glasses have received enough independent tests to confirm that they are indeed capable of assisting sleep.
Experts say that during the day, blue light exposure is still very good. The best light source is sunlight, which contains many different wavelengths of light.
Experts suggest that if you cannot completely avoid using electronic products at night, then it is better to use a small screen rather than a large one. Please lower the brightness of the screen and keep it as far away from the eyes as possible. Reduce the time to read information from electronic devices.