困扰我的physics and chemistry term

Chemistry

cation正离子,阳离子 名词cation: 1. a positively charged ion
cathode: n. 阴极 形容词:cathodic 副词:cathodically
名词cathode:
1. a negatively charged electrode that is the source of electrons entering an electrical device
2. the positively charged terminal of a voltaic cell or storage battery that supplies current
anion: n. 阴离子 名词anion: 1. a negatively charged ion
anode: n. 阳极 名词anode:
1. a positively charged electrode by which electrons leave an electrical device
2. the negatively charged terminal of a voltaic cell or storage battery that supplies current

Physics

正相反Positive（+） anode

negative（-）cathode