Some netizens asked: "Does the blue light of the LED light damage the eyes?" LED lamp is a new type of light source after incandescent lamp, fluorescent lamp and energy-saving lamp. It has high luminous efficiency, but many people don't understand its light-em

In recent days, Geekbench has been smashed. First, the previous Snapdragon 820 finally had a more credible result. LG's new machine ran out of single-threaded 1786, surpassing the current fastest Samsung Exynos 7420, and then Huawei Unicorn 950 also broke the results, 1909

1.1 The standard values ​​of lighting for basketball and volleyball venues shall comply with the requirements of Table 1.1. Note: 1 Basketball: The color and reflectance of the background material should avoid confusion. There should be no high brightness area