What is the best way to stop ultrasonics or soundwaves from traveling?

Subject: What is the best way to stop ultrasonics or soundwaves from traveling?

Date: Sun Jun 24 13:02:44 2001
Posted by No name entered.
Grade level: grad (non-science) School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Physics
ID: 993402164.Ph

Message:


I was hoping to 1. find the best device for measuring soundwaves/ultrasonics to 
determine there strenth/frequency and 2. what material is best for preventing 
the passing of these soundwaves...would it be lead etc.?...thks CBRI20@aol.com.

Re: What is the best way to stop ultrasonics or soundwaves from traveling?

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