The still images link to .avi files (xvid mpeg-4 compression) which will open if your local system has an assigned helper application, and the Xvid codec installed.  Mac users, and those with other difficulties, may be best off downloading the video and playing it with VLC media player.


Ping-pong ball vs Aluminum plate

A gas gun (built by Matt Frye, JoeAngel Miramontes, and Brett Leonardo) is used to propel a ping-pong ball.   The muzzle speed in this clip is 200 m/s;  it plays back at 30 and 10 frames/s.

11 000 frames/second     2.6 MB

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Ping-pong ball vs apple Golden delicious

A gas gun (built by Matt Frye, JoeAngel Miramontes, and Brett Leonardo) is used to propel a ping-pong ball.   The muzzle speed in this clip is 200 m/s;  it plays back at 30 and 10 frames/s.  The result is a superficial but interesting damage pattern.

11 000 frames/second     4.4 MB

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Ping-pong ball vs peeled orange

A gas gun (built by Matt Frye, JoeAngel Miramontes, and Brett Leonardo) is used to propel a ping-pong ball.   The muzzle speed in this clip is 300 m/s;  it plays back at 30 and 10 frames/s.

11 000 frames/second     8.1 MB

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Impact testing I

Drop test of a two-component foam, overall height ~2 feet.  A 375-pound plate is dropped from a height of 5 feet.

1 000 frames/second

4.8 MB

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Impact testing II

Drop test of a commercial energy-absorbing foam, overall height ~2 feet.  A 375-pound plate is dropped from a height of 5 feet.

1 000 frames/second

6.6 MB

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