NMDA receptor. NMDA receptors (NMDAR), glutamate receptors are the predominant molecular device for synaptic plasticity and to control the memory function.
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire that create the magnetic field.
Use a compass; north points to the south part of the magnet. Magnets (permanent) A magnet that keeps its magnetism for a long time (store magnet).Repels other magnets with the same polarity. It attracts opposite poles. It only attracts some metals. A magnet always has an even number of poles.