Sometimes, when you suddenly hear a buzzing sound in the quiet of the night, you think, "What is this sound?".You might think it's coming from underground, but in fact, it could be from your fan!
But why do fans make a buzzing sound?This is because the blades of the fan are subjected to resistance and produce sound, which is also known as "oscillation". Oscillation refers to the resistance experienced by the fan blades during rotation, and this resistance can produce a sound that hums.
The development of fans can be traced back to ancient times, and the earliest fans were made of bamboo and paper, which could be used to resist hot weather to alleviate the discomfort of the heat. With the passage of time, the development of fans has become more and more advanced, and now fans can not only reduce the heat, but also regulate the indoor temperature, eliminate moisture and harmful substances in the indoor air, and repel mosquitoes in the room, etc.
As the fan evolved, so did its structure. In the past, fan blades were made of bamboo or paper, and the blades were thin and easily deformed, so they were also more resistant, resulting in a buzzing sound. Nowadays, fan blades are generally made of metal or plastic, and the blades are thicker and have strong tensile strength, so they are less resistant, so the sound they emit is relatively small.
In addition, the blades of the fan are also affected by the air flow, and when the air moves, it creates resistance to the fan blades, which creates oscillations that make a buzzing sound.
In short, the fan hums because it is emitted by the resistance, which is also known as "oscillation". Oscillation refers to the resistance experienced by the fan blades during rotation, and this resistance can produce a sound that hums. In addition, the blades of the fan are also affected by the air flow, and when the air moves, it creates resistance to the fan blades, which creates oscillations that make a buzzing sound.
Aside from making a buzzing sound, fans have a lot of other uses. It can be used to reduce heat, regulate indoor temperature, eliminate humidity and harmful substances in indoor air, and repel mosquitoes in the room.
In short, the fan hums because it is emitted by the resistance, which is also known as "oscillation". The development of the fan dates back to ancient times, and it not only relieves the heat, but also regulates the indoor temperature, eliminates moisture and harmful substances in the indoor air, and repells mosquitoes in the room, etc. So, the next time you hear a buzzing sound, you'll know it's coming from your fan!