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LASER SURFACE ANALYZER – Detecting Toxins

LASER SURFACE ANALYZER - Detecting Toxins

A portable laser can detect toxic substances in our environment.

Air Date:12/28/1994

Scientist:

Transcript:

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LASER SURFACE ANALYZER – Finding Lead

COMPUTERIZED PHOTOGRAPHY – Continuous Tone Printer

CUSTOMS AND TRADITIONS

Order Jim Metzner's novel, "Sacred Mounds"

"This is a rollicking, thought-provoking, rollercoaster of a novel. It's time travelling on steroids, but it asks big questions. Bravo!" -- Ken Burns, filmaker

He spent decades recording soundscapes. Now they're going to the Library of Congress.

Announcing the
American Soundscapes Project where you can hear the work of some of the best sound recordists in the world and contribute sounds that are significant to you.

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