There are several dimensions by which the four fundamental forces - strong nuclear force, electromagnetic force, weak nuclear force, and gravitation force - might be compared:
- Relative strength
- Duration for which the force can act
- Messenger particle
- 'Direction', e.g. attractive or repulsive or both
- Mass
- Range/distance
- 'Behavior'
- Exceptions or limitations to when forces act
- Examples (which is perhaps the most elucidating)
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