physics mathematics, electronics problem arena(chalenging)

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hnejati

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I have some basic questions:

1) why do not the raindrops collapse together?
2) why does not an electron beam or ion beam widen quickly?
3) which way is better ant colony optimization or bee swarm optimization?
4) can we model electrons with liquid as electron see and apply the liquid mechanics to them?
5) can we use phonons to make some processes which are phononic assisted fabrication like photonic assisted fabrication?
 

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