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Recently, a video of a light bulb lighting up after being exposed to water quickly circulated on the Internet, which shocked many netizens. If it really is In this way, does it mean that there is no need to turn on the power to make the light shine? In fact, this is not the case. Electricity is still indispensable in life. What exactly is the principle of a water cup lamp? What should you pay attention to when buying lamps? Let’s take a brief look at it with the editor.

1. What is the principle of the water cup lamp?

The principle of the water cup lamp is the same as that of ordinary light bulbs. It conducts electricity through electrolytes, because strong acids and strong alkali salts themselves are electrolytes and dissolve After being dissolved in water, it naturally becomes an electrolyte solution, so when the light bulb comes into contact with the electrolyte solution in the water cup, it will glow. In addition, strong acids and strong bases are electrolytes, and they all conduct electricity after being dissolved in water.

2. What should you pay attention to when purchasing lamps?

1. Pay attention to the logo of the lamp: When purchasing a lamp, you must choose one with clear markings, including trademark, rated voltage, power, etc. Only in this way can you buy qualified lamps. Otherwise, power accidents may occur if the power is too large or the product quality is not up to standard.

2. Pay attention to the material of the lamp: According to experts from Qijia.com, the bulb mouths of good-quality lamps are made of aluminum alloy, which has a long service life and is not easy to rust. Moreover, the lamps are generally Double tungsten wire, while the poorer quality is single tungsten wire, so pay attention when purchasing.

3. Pay attention to the wire cross-section: Only by using wires of suitable size can the safe operation of the lamp be ensured. In order to save costs, a small number of merchants on the market will use smaller than standard wires, which can easily lead to wire burnt, short circuit, etc. , pay attention to confirm the wire identification.

4. Pay attention to electronic rectifiers: Most lamps on the market will be equipped with ballasts, which can increase the current frequency and reduce the flicker of lamps. It can also protect circuits and prevent component damage. So it is best to choose lamps with ballasts.

Editor’s summary: This is the introduction of what the water cup lamp is and what you need to pay attention to when buying lamps. I hope it will be helpful to you. If you want to know more relevant information, please pay attention to Qijia.com.

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