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Pedro22

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Pedro22

New Propulsion System?

If a loud speaker produces sound by pushing air via its vibrating cone,then if the cone was made of material that aloud air to pass one way,wouldnt this create low pressure on one side and thus create...
22:19 Tue 05th Jun 20074 answers, last by Pedro22 17:33 Wed 13th Jun 2007
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Pedro22

combi boiler

how does a combi boiler separate domestic hot tap water from central heating water?
21:34 Tue 05th Jun 20072 answers, last by almcd007 23:48 Tue 05th Jun 2007

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