자기장: 세상을 형성하는 보이지 않는 힘
Magnetic fields are all around us! They are a big part of what makes our world work. Magnets are used for a lot of different things. They make invisible forces that can do real work, like making our cars go and our computers run. Our company, Ruisen makes strong magnets called NdFeB magnets, which you’ll read about in this document.
