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Geometry and Sounding Boards

Sounding Boards

Sounding BoardsDid you ever wonder how sound was projected before the days of microphones? I found it fascinating to learn at a historical church that sometimes they used “sounding boards” like the one shown here. Sound waves would bounce off this sounding board at different angles, causing the preacher’s voice to reach different parts of the church.

Room acoustics is a fascinating example of geometry in action. And it’s all possible due to the underlying order God has placed within sounds. You see, sound waves reflect off surfaces in a consistent fashion, making it possible to design buildings to reflect sounds where we want them to go.

P.S. The sounding board shown is from the church George Washington attended (Christ Church in Alexandria, VA). Here’s a link to a prayer Washington wrote for our nation and his inaugural address, both of which are filled with reminders of God’s sovereignty.

(For more examples of angles in action, see Book 1 of Principles of Mathematics: A Biblical Worldview Curriculum.)

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