I have some confuse about the items. Could someone make some interpretation for me? Many thanks.

**1. Orders**

If we have very perfect balance shaft rotating, it should no vibration at all. If we attach a weight on it to make it imbalance, it will be a first order vibration (let's us E1 stand for it).

If we attach 2 weights on it to make the imbalance, so there will be ONLY a E1 (2 weights tegother make one point imbalance ), or there will be a E1 and E2 (the mainly vibration from the 2 weights, one rotation two vibration, the amplitude E2> E1) , right or not ?

If we attach 5 weights on it to make the imbalance, there will be show E1, E2,E3,E4,E5?

**2. Harmanic**

If a vibration, we named it E1, causing harmanic E2，E3, E4, E5......,

the amplitude is E1>E2>E3>E4>E5>.....， or the amplitudes is random？

Hope can clear up th cloud over my head. Thank you all.

Best wished

Jab