On tv the other day I saw a science experiment where a drum with a membrane one end and hole the other was filled with smoke, and the membrane end banged like a drum skin.
Out of the port shot a perfect smoke ring that travelled several metres.
I tried this at home and got similar results for a positive pressure increase in the box.
A stage smoke machine and music would be more revealling of port/vent airflow behaviour.
Eric.
Out of the port shot a perfect smoke ring that travelled several metres.
I tried this at home and got similar results for a positive pressure increase in the box.
A stage smoke machine and music would be more revealling of port/vent airflow behaviour.
Eric.
follow the flowing fog
An ultrasonic fog generator like the ones used in citche tabletop fountains could act as a sustainable source of smoke.
http://www.mainlandmart.com/instruct.html
Adding a planner light source such as would be obtained from a laser line generator or an optical slit will highlight a slice of the fogs flow. This will let you see the eddies and swirling flow of the gasses as they move.
Might not be a good idea with paper speaker cones. After a couple of hours they could get kinda soggy.
An ultrasonic fog generator like the ones used in citche tabletop fountains could act as a sustainable source of smoke.
http://www.mainlandmart.com/instruct.html
Adding a planner light source such as would be obtained from a laser line generator or an optical slit will highlight a slice of the fogs flow. This will let you see the eddies and swirling flow of the gasses as they move.
Might not be a good idea with paper speaker cones. After a couple of hours they could get kinda soggy.
The monitors I'm using are made of some variant of PP, and water dissolves them--don't use them with those, either. 😛
Come to think of it... how many speakers out there really are waterproof? Aluminium cone / rubber surround? And what about tweeters?
*ponders*
(/hijack)
Come to think of it... how many speakers out there really are waterproof? Aluminium cone / rubber surround? And what about tweeters?
*ponders*
(/hijack)
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