THE oscillations of a long pendulum are observed to describe an ellipse the axis of which tends to set itself at right-angles to the plane in which the pendulum was started. An explanation of the ...
Spanish researchers have developed a new system that converts water current vibrations into renewable ...
“The only skyscraping girls’ school in the world” is small (600 students) Mundelein College, which is lodged near Lake Michigan in a 15-story building on Chicago’s North Side. A popular teacher of ...