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IN this, the third edition, Dr. Ewing has thoroughly revised his well-known text-book, and to some extent he has rewritten certain chapters; for example, the chapter on steam turbines is new, and the ...

For two centuries, students have learned that heat flows and engines work according to rigid limits that no machine can beat.

The introduction of several advanced, efficient, and more robust power options over the years has largely overshadowed steam ...

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 ...

Two young men climbed into the open cockpit of a Travelair biplane one day last week at Oakland Municipal Airport. After a minute or so the propeller began to turn. The plane started down the runway, ...