Watch outtakes here!

Michael Thurber of cdza joins Tara and Anthony as they attempt to break glass with the human voice. Will Michael’s vocal cords be enough to get the job done? Watch to find out!

Experiment Tips:
– Place a straw inside the glass. When the straw starts to bounce around your voice has reached the natural frequency of the glass.
– Leaded, crystal glasses work best for this experiment because they are more delicate.
– A horn driver helps center the sound in one place.

List of Materials Used

How To Breakdown

Best Glasses To Use
The glass needs to contain a small flaw. The shattering starts with this small crack. The blemish can be too small to be seen by the naked eye.

High fives to our special guest Michael Thurber of cdza!

Special thanks to the Jewish Community High School of the Bay ( and to our Science Advisors: Kishore Hari ( and Marc “Zeke” Kossover ( and Sound Consultant Meara O’Reilly (

Join Anthony Carboni and Tara Long as they turn the world around them into a giant science experiment. New videos every Wednesday!

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Hard Science Crew Credits:

Executive Producer: Barry Pousman
Producer: Nicolette Bethea
Shooter: Michael Baca
Second Shooter: Matt Piniol
Editor: Conor Gordon
Production Assistant: Kendall Long