Features Table of Contents

August 1999

feature articles

trash, heat, and ash
The French are turning household waste into energy, while developing technologies to control the residue.

all aboard
A new system that tests engine oil on the go aims to keep locomotives on track.

the sub that vanished
After three decades of fruitless searches, sonar and an undersea rover helped Israel discover the fate of the INS Dakar.

pushing the limits
An ore separator challenges superconductor boundaries with a supersize magnet.

no breaks for noise
To encourage confidence in anti-lock brakes, designers are seeking ways to keep noise and vibration transmission from surprising the driver.

blast from the past
Building a new jet engine test facility to replicate decades-old capabilities.

standing up to the test
Crosslinking polyethylene can greatly reduce wear in hip implants.