Frederic Edwin Church paintings

Frederic Edwin Church paintings
Frederic Remington paintings
And, he notes, several sportsmen's catalogs sell knives made of non-metallic material, making them impervious to metal detectors. "Even if you put it in your front pocket," says Boivin, "It wouldn't ring the detector."New Detection MethodsThat may all change as more companies begin to rapidly develop and introduce advanced detection systems.One new X-ray machine developed by Rapiscan Security Products, for example, is designed for use on passengers rather than on carry-on baggage. The Hawthorne, Calif., company's Secure 1000 looks like a large gray wardrobe closet and uses a narrow beam of low-powered X-rays to scan a passenger. The X-rays penetrate a few millimeters into the body and reflected back to sensitive detectors.Soft objects such as flesh and clothing reflect weak signals while harder objects