Which materials block radio waves the most (and why)?

Subject: Which materials block radio waves the most (and why)?

Date: Mon Feb 18 18:46:00 2002
Posted by Sean
Grade level: 7-9 School: homeschool
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Engineering
ID: 1014075960.Eg

Message:


I have a science fair on March 14th.  I have done the experimentation and some 
internet research, but cannot find the answer to the above question.  I want to 
know why some materials block radio waves and others don't.

Re: Which materials block radio waves the most (and why)?

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