數條物理的問題

1.我想問,在原子與原子之間的吸引力,是一種什麼的力呢?可否詳細解釋這種力是怎樣的?
Intermolecular force is electrostatic force in nature. It is an attractive force that decreases rapidly with distance. But at very short distance, the force becomes repulsive.

2.另外,電場又是一樣怎樣的東西呢??
In physics, an electric field is the effect produced by the existence of an electric charge, such as an electron, ion, or proton, in the volume of space or medium that surrounds it.

3.電與磁又有什麼關係呢?
Simply speaking, changing electric field produces magnetic field. Likewise, changing magnetic field produces electrin field.(電動生磁，磁動生電)

4.電磁場又是什麼東東呢?它和電場有分別嗎?
Electromagentic field is one that has an electric field component and a magnetic field component.In that sense, electromagnetic waves are time varying electromagnetic fields at a certain frequency.

Electromagentic field is different from electric field. The former is produced by oscillating charges (i.e. charges under acceleration), whereas the latter is produced by static charges.