Formation of Radial and Concentric Fractures in Glass


Formation of radial and concentric
fractures in glass. Watch this bullet as it impacts the
surface of a glass pane in slow motion. The force against the glass forms radial
fractures first and then concentric fractures. With the initial impact the
glass bends forward and the radial fractures begin to form as they radiate
from the center. This view shows the opposite side of the glass. As the bullet
crowns through the glass, the glass is pushed in the direction of the force.
Notice the radial fractures moving away from the center of the impact and the
concentric fractures forming a circular pattern while glass particles fly
forward. You have completed this activity:
Formation of radial and concentric fractures in glass.

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