[Detailed application of magnets in daily life]

Magnets sound familiar. It is well known that magnets can absorb iron. Many people have used it, but when asked about the specific application of magnets in daily life, it is difficult to summarize. Today, we will analyze the relationship between magnets and our lives.

1. Electroacoustic devices: All sound speakers such as mobile phones, televisions, audio, headphones, etc. are devices that convert electronic signals into sound signals. It is mainly composed of a fixed permanent magnetic field, a coil and a cone. When the sound passes through the coil in the speaker in the form of an audio current, the electromagnetic field generated by the magnet on the speaker will generate energy to the coil, and the coil will vibrate at different times due to the change of current intensity, thereby causing the cone to emit sounds of different frequencies and intensities. The cone vibrates through the air, so we hear the sound.

2. Electronic products: mobile phones, tablet computer cases, etc.

3. Many objects such as luggage and leather cases are fixed with electromagnets.

4. Medical industry: Magnetic resonance is most commonly used in medical examinations. It uses the interaction between the human body's magnetic field and the magnetic substances carried by the instrument itself to produce a test solution to help people find the cause of the disease. Similarly, in other treatment methods, there are many traces of the use of magnets, such as acupuncture, far-infrared magnetic therapy, induction coil detectors, etc.

5. Electromagnetic energy conversion equipment such as motors and motors.

6. Magnets are also widely used in household appliances such as electric stoves and microwave ovens.