Known as the “Master of Suspense,” Alfred Hitchcock was one of the most famous film directors of the 20th century. He directed more than 50 feature-length films from the 1920s into the 1970s. Hitchcock's image, seen during Hitchcock's frequent cameos in his own films and before each episode of the hit TV show Alfred Hitchcock Presents , has become synonymous with suspense.

Read the essential details about the history of professional football. New clubs in the textile towns of Lancashire began to attract quite large crowds. This enabled them to unofficially pay their players small sums of money to cover their costs of appearing on a Saturday afternoon.

A back titration is a titration method where the concentration of an analyte is determined by reacting it with a known amount of excess reagent. The remaining excess reagent is then titrated with another, second reagent. The second titration's result shows how much of the excess reagent was used in the first titration, thus allowing the original analyte's concentration to be calculated.

Depletion gilding (dorado por oxidación). The gold-making techniques of the ancient Colombians. Created for the exhibition Beyond El Dorado: power and gold...

The 2008 PrimariesOne of the most competitive primary seasons in US history came to an effective end on June 3, 2008 when Senator Barak Obama clinched the Democratic nomination for President. He became the first African-American to run for President from a major party. Both the Democratic and Republicans races had large field, as this was the first time in half a century when there was no President ofrVice President from either party running to be nominated for the Presidency.

Although they arose from very different sources, the Indian caste system and the feudal Japanese class system have many features in common. Yet the two social systems are dissimilar in important ways, as well. Are they more alike, or more different? The Essentials Both the Indian caste system and the Japanese feudal class system have four main categories of people, with others falling below the system entirely.