TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of online ...

Even before von Lilienthal's sug- gestion, Etrich and Weis had patented a similar idea, but had abandoned it during construction. $ While no experiments were made, more mature consideration led to the ...

THIS is an admirable little book suitable from every point of view as a present for a boy with a mechanical turn of mind. As the extended title indicates, the properties of the gyroscope are ...

Two spacewalking astronauts hung science experiments on the outside of the space station’s new lab Friday and packed up a broken gyroscope for next week’s shuttle ride home. It was the third and final ...