磁流体力学研究的是导电流体与电磁场的相互作用问题。 这里说的导电流体大致可分为两类,即导电液体与导电气体。导电液体包括:水银、融化的金属(如:锂、钾、钠、钢、铁、铝、镁、铅、铋以及各种合金等)和海水。 导电气体主要是指电离气体。在正常状态,气体分子或原子是不导电的。原子中的电子受着原子核的库伦力的束缚。使电子脱离原子核的束缚需要一定的能量,我们称之 Magnetohydrodynamics is the study of the interaction between conductive fluid and electromagnetic field. Conductive fluid here said can be divided into two categories, namely conductive liquid and conductive gas. Conductive liquids include: mercury, melted metals (eg, lithium, potassium, sodium, steel, iron, aluminum, magnesium, lead, bismuth and various alloys, etc.) and seawater. Conductive gas mainly refers to ionized gas. Under normal conditions, gas molecules or atoms are not conductive. The electrons in the atom are bound by the Coulomb force of the nucleus. Bringing electrons away from the nucleus requires some amount of energy, which we call it