Showing results for "Division" in Engineering

Bertrand Russell wrote that mathematics can exalt "as surely as poetry". This is especially true of one equation: ei(pi) + 1 = 0, the brainchild of Leonhard Euler, the Mozart of mathematics. More than two centuries after Euler's death, it is still regarded as a conceptual diamond of unsurpassed beauty. Called Euler's identity, or God's equation, it includes just five numbers but represents an astonishing revelation of hidden connections.

Some 40 million miles of roadways encircle the earth, yet we tend to regard them only as infrastructure for human convenience. While roads are so ubiquitous they're practically invisible to us, wild animals experience them as entirely alien forces of death and disruption. In Crossings, environmental journalist Ben Goldfarb travels throughout the United States and around the world to investigate how roads have transformed our planet. A million animals are killed by cars each day in the US alone, but as the new science of road ecology shows, the harms of highways extend far beyond roadkill.

On February 21, 1943, Pan American Airways' celebrated seaplane, the Yankee Clipper, took off from New York's Marine Air Terminal and island-hopped its way across the Atlantic Ocean. Arriving at Lisbon the following evening, it crashed in the Tagus River, killing twenty-four of its thirty-nine passengers and crew. Americans in a World at War traces the backstories of seven worldly Americans aboard that plane, their personal histories, their politics, and the paths that led them toward war.

Pan Am at War chronicles the airline's historic role in advancing aviation and serving America's national interest before and during World War II. From its inception, Pan American Airways operated as the "wings of democracy", spanning six continents and placing the country at the leading edge of international aviation. At the same time, it was clandestinely helping to fight America's wars.

On January 25, 1917, HMS Laurentic struck two German mines off the coast of Ireland and sank. The ship was carrying 44 tons of gold bullion to the still-neutral United States via Canada in order to finance the war effort for Britain and its allies. Britain desperately needed that sunken treasure, but any salvage had to be secret, since the British government dared not alert the Germans to the presence of the gold. Lieutenant Commander Guybon Damant was the most qualified officer to head the risky mission.