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Stephen Collier

Stephen Collier heeft een opmerking geplaatst, 19 augustus 2015 12:33
I'm not exactly sure what the described situation is (is there a coating on the surface of the foam board being increased/decreased, or maybe the idea is that different foam materials can be used w...
Stephen Collier heeft een opmerking geplaatst, 19 augustus 2015 10:22
You'll need to know sound physics and maybe electromagnetic physics for general knowledge about sound waves, energy, power, decibels, and more. You'll also need to know specifics about the types an...