1. Can I save electricity by turning off the lights?
"Turn off the lights and save electricity" is a familiar environmental slogan since childhood. It seems to save electricity by turning off the lights, because it saves electricity time. However, according to experts, in fact, any electrical appliance is the same. When you turn it on, the instantaneous starting current is much larger than usual.
Energy-saving lamps are different from incandescent lamps, and "turning off the lights at will" does not save electricity. The instantaneous high voltage of energy-saving lamps is twice the normal voltage, and the power consumption is three times that of normal use. It is estimated that turning on and off an energy-saving lamp once is equivalent to the duration of an energy-saving lamp of 10 hour.
Therefore, there is a misunderstanding of "turning off the lights at will". Use energy-saving lamps for a short time and save electricity without turning off the lights. If you want to leave the room for a long time (more than half an hour), consider turning off the lights!
2. Will overnight charging damage the battery?
The fact is that your mobile phone is smarter than you think.
When the battery is fully charged, the phone will automatically stop charging. This means that the battery is not used at all.
Even so, you shouldn't charge your mobile phone all night. Keeping the battery charged between 40% and 80% will take longer than keeping the battery charged at 100%.
3. Can you get an electric shock when you put your mobile phone on the bedside while sleeping?
Can a small charger really kill people?
Safe voltage of human body should be kept below 36V, while the output voltage of ordinary mobile phone charger is only 5V, which obviously will not affect safety. However, if the grounding wire is not used or inferior chargers and patch panels are used, it may cause leakage and threaten people's lives. "
It can be seen that a qualified mobile phone charger will not cause harm to people.
4. The power cord is broken, can you just stick it with transparent tape?
Many friends think that scotch tape is made of plastic. Since plastic is insulated, it is enough to wrap transparent tape around bare wires at home. But this is very dangerous.
When the wire is broken, the electricity is exposed. We should use insulating tape because it doesn't conduct electricity. The packaging box or cellophane tape used by students has no insulation effect at all. On the contrary, the glue on the tape has good conductivity, and it will still cause great hidden dangers to personal safety when it is used to bind the joints or damaged parts of the circuit. At the same time, the fire and the exposed part of the zero line are bound with cellophane tape at the same time, which may also cause short circuit fire and even burn out the lines and electrical equipment. Or burn down the house, and the consequences are unimaginable.
In a word, scotch tape has no insulating performance, and it must not be used as insulating tape!
5. There is radiation in the substation, which will cause cancer?
Truth: High-voltage lines and substations do not produce electromagnetic radiation, but produce extremely low-frequency electromagnetic fields, which are called power frequency electric fields, and the strength of power frequency electric fields is very small.
Only 0.0 12 microstra will have no effect on the body. You know, the mobile phone we brush every day has 12.73 Vestra.
Of course, although the power facilities are not terrible, don't approach them casually. For example, people can pass under the high-voltage line of the power supply system, but it is best not to go offline for a long time, because it is very dangerous to move offline for a long time. If the high-voltage line falls off, it will easily lead to life-threatening.
6. Will wind power generate smog?
Can wind power really steal the wind from Beijing and make the smog worse? The wind means I don't carry this pot-
Zhu Rong, an expert from the Meteorological Bureau, has made it clear that the diffusion of atmospheric pollutants depends on the atmospheric movement, and the rotation of wind turbines must first affect the atmospheric movement before it can affect the atmospheric diffusion. The horizontal spatial scale of atmospheric movement is tens to hundreds of kilometers, and the vertical scale is more than ten kilometers. However, the impact of wind power generation on the atmosphere is below 300 meters and will not affect the atmospheric movement. Therefore, the rumor that Inner Mongolia wind farm aggravates the smog phenomenon in Beijing, Tianjin and Hebei is wrong.
In fact, wind power belongs to clean energy, and the development of wind power can alleviate environmental pollution. Without clean energy such as wind power, the smog may be more serious!
Ok, that's all for today's popular science. If you look reliable, pay attention to the official account of WeChat, cousin Kuanfen. I will share some knowledge about electricity use with you regularly. I believe it will always come in handy!