Search

Search results

Displaying 111 - 120

DK Science & Technology: Machines

WHAT IS MECHANICAL ADVANTAGE? HOW IS A MACHINE’S EFFICIENCY MEASURED? LEVERSPULLEYSINCLINED PLANESGEARSFIND OUT MOREFrom can openers to cranes, machines make work easier. Simple machines include…

Swiss literature

(Encyclopedia) Swiss literature. The literature of Switzerland is written in German, French, Italian, and Romansh, with German predominating. The extensive literature in Romansh dialect (see Rhaeto-…

DK Science & Technology: Engines

WHAT IS A HEAT ENGINE? WHAT IS AN INTERNAL COMBUSTION ENGINE? HOW DOES A STEAM ENGINE WORK? HOW DOES A JET ENGINE WORK? GASOLINE ENGINEBIOGRAPHY: FRANK WHITTLE English, 1907-1996 TURBINESFUEL…

leprosy

(Encyclopedia) leprosy or Hansen's diseaseHansen's diseasehănˈsənz [key], chronic, mildly infectious malady capable of producing, when untreated, various deformities and disfigurements. It is caused…

Entertainment Bios — S

Antonio Sabato, Jr.SadeEva Marie SaintBuffy Sainte-MarieHarry SaltzmanIgnatius SanchoLawrence SandersAdam SandlerJulian SandsLaura San GiacomoCarlos SantanaLuis SanteiroMia SaraCristina…

May 2005

WorldInsurgents Continue Series of Attacks (May 1): At least 35 Iraqis die in bombings in Mosul and Baghdad. Insurgent attacks have intensified since formation of new government in late April. (May…

Epidemics of the Past: Bubonic Plague

Bubonic PlagueEpidemics of the PastSmallpox: 12,000 Years of TerrorBubonic PlagueInfluenza: A Twentieth-Century Epidemic Ring around the rosy, A pocket full of posies, Ashes … ashes, We all…

nitrogen cycle

(Encyclopedia) CE5 Nitrogen cycle nitrogen cycle, the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and…