A few days ago, the National Development and Reform Commission pointed out that “the price of the ladder is planned to use 87 degrees per household per month as the basic electricity, and the price will exceed the priceâ€. It is clearly stated th…
With the increase of car owners in Beijing, many car owners found that in the process of testing the car for the annual inspection, the possibility of the headlights passing through once is very small. Whether it is a friend around you or …
Q1. Is GPS sent straight to GPS receiver?
A1. Yes, it is not. The GPS signal in the receiver is straight, but it is definitely not a GPS satellite sending a straight signal to the receiver. The reason is that the line-of-sight brings you the illusion that it is literal…
Like LED street lights, the LED tunnel light market has also been booming in recent years. According to the "China LED Tunnel Light Report" of Guangdong Zhonglong Transportation Technology Co., Ltd., the LED tunnel light market in China w…
The Hong Kong Academy of Sciences is a research and development institution established by the Hong Kong Government in 2001. Its position in the local area is comparable to that of some large research institutes in the Mainland. ASTRI's operati…
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The voice-controlled tank model introduced in this paper has the characteristics of simple circuit, light and flexible structure and convenient production. The use of whistle or applause can control the tank to retreat and move in any dire…
The luminous efficiency of white LEDs is constantly increasing, and products exceeding 100 lm/W (comparable to high-efficiency fluorescent lamps) have also appeared. When a white LED is used on a lighting fixture, the loss of the power supply circu…
LED illuminators are more efficient and have a longer life than other types of illuminators and bulbs. Depending on the application, it can last up to 20-30 years. Unlike compact energy-saving lamps, LEDs are stable and have no flicker. The increas…