Gothic Backgrounds

Gothic Backgrounds

Gothic architecture is a style of architecture which flourished during the high and late medieval period. It evolved from Romanesque architecture and was succeeded by Renaissance architecture.

Originating in 12th-century France and lasting into the 16th century, Gothic architecture was known during the period as "the French Style" (Opus Francigenum), with the term Gothic first appearing during the latter part of the Renaissance as a stylistic insult. Its characteristic features include the pointed arch, the ribbed vault and the flying buttress.

Gothic architecture is most familiar as the architecture of many of the great cathedrals, abbeys and parish churches of Europe. It is also the architecture of many castles, palaces, town halls, guild halls, universities, and to a less prominent extent, private dwellings.

It is in the great churches and cathedrals and in a number of civic buildings that the Gothic style was expressed most powerfully, its characteristics lending themselves to appeal to the emotions. A great number of ecclesiastical buildings remain from this period, of which even the smallest are often structures of architectural distinction while many of the larger churches are considered priceless works of art and are listed with UNESCO as World Heritage Sites. For this reason a study of Gothic architecture is largely a study of cathedrals and churches.

A series of Gothic revivals began in mid-18th century England, spread through 19th-century Europe and continued, largely for ecclesiastical and university structures, into the 20th century.

Gothic Backgrounds

Gothic backgrounds

Gothic backgrounds

Gothic architecture is a style of architecture which flourished during the high and late medieval period. It evolved from Romanesque architecture and was succeeded by Renaissance architecture.

Originating in 12th-century France and lasting into the 16th century, Gothic architecture was known during the period as "the French Style" (Opus Francigenum), with the term Gothic first appearing during the latter part of the Renaissance as a stylistic insult. Its characteristic features include the pointed arch, the ribbed vault and the flying buttress.

Gothic backgrounds

Gothic architecture is most familiar as the architecture of many of the great cathedrals, abbeys and parish churches of Europe. It is also the architecture of many castles, palaces, town halls, guild halls, universities, and to a less prominent extent, private dwellings.

It is in the great churches and cathedrals and in a number of civic buildings that the Gothic style was expressed most powerfully, its characteristics lending themselves to appeal to the emotions. A great number of ecclesiastical buildings remain from this period, of which even the smallest are often structures of architectural distinction while many of the larger churches are considered priceless works of art and are listed with UNESCO as World Heritage Sites. For this reason a study of Gothic architecture is largely a study of cathedrals and churches.

A series of Gothic revivals began in mid-18th century England, spread through 19th-century Europe and continued, largely for ecclesiastical and university structures, into the 20th century.

Gothic backgrounds

Gothic backgrounds

Star background

Star background

A star is a massive, luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. For most of its life, a star shines due to thermonuclear fusion in its core releasing energy that traverses the star's interior and then radiates into outer space. Almost all elements heavier than hydrogen and helium were created by fusion processes in stars.

Star background

Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star are determined by its evolutionary history, including the diameter, rotation, movement and temperature. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung-Russell diagram (H–R diagram), allows the age and evolutionary state of a star to be determined.

Star background

A star begins as a collapsing cloud of material composed primarily of hydrogen, along with helium and trace amounts of heavier elements. Once the stellar core is sufficiently dense, some of the hydrogen is steadily converted into helium through the process of nuclear fusion. The remainder of the star's interior carries energy away from the core through a combination of radiative and convective processes. The star's internal pressure prevents it from collapsing further under its own gravity. Once the hydrogen fuel at the core is exhausted, those stars having at least 0.4 times the mass of the Sun expand to become a red giant, in some cases fusing heavier elements at the core or in shells around the core. The star then evolves into a degenerate form, recycling a portion of the matter into the interstellar environment, where it will form a new generation of stars with a higher proportion of heavy elements.

Star background

Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution.

Star background

Star background

Background check

Background check

Background check

Background check

Background check

Barack Obama background

Barack Obama background

Barack Hussein Obama II [born August 4, 1961) is the junior United States Senator from Illinois. He is the presumptive nominee of the Democratic Party in the 2008 presidential election, and the first African American to be a major party's presumptive nominee for President of the United States.

A graduate of Columbia University and Harvard Law School, Obama worked as a community organizer and practiced as a civil rights attorney before serving in the Illinois Senate from 1997 to 2004. He also taught constitutional law at the University of Chicago Law School from 1992 to 2004. Following an unsuccessful bid for a seat in the U.S. House of Representatives in 2000, he announced his campaign for the U.S. Senate in January 2003. After winning a landslide primary victory in March 2004, Obama delivered the keynote address at the Democratic National Convention in July 2004. He was elected to the Senate in November 2004 with 70% of the vote.

Barack Obama background

As a member of the Democratic minority in the 109th Congress, he cosponsored legislation to control conventional weapons and to promote greater public accountability in the use of federal funds. He also made official trips to Eastern Europe, the Middle East, and Africa. In the current 110th Congress, he has sponsored legislation regarding lobbying and electoral fraud, climate change, nuclear terrorism, and care for returned U.S. military personnel. Since announcing his presidential campaign in February 2007, Obama has emphasized withdrawing American troops from Iraq, increasing energy independence, decreasing the influence of lobbyists, and promoting universal health care as top national priorities.

Barack Obama background

Barack Obama background

Barack Obama background

Barack Obama background

Barack Obama background

Black background

Black background

Black is the color of objects that do not emit or reflect light in any part of the visible spectrum; they absorb all such frequencies of light. Although black is sometimes described as an "achromatic", or hueless, color, in practice it can be considered a color, as in expressions like "black cat" or "black paint".

Black can be defined as the visual impression experienced when no visible light reaches the eye. (This makes a contrast with whiteness, the impression of any combination of colors of light that equally stimulates all three types of color-sensitive visual receptors.)

Pigments that absorb light rather than reflect it back to the eye "look black". A black pigment can, however, result from a combination of several pigments that collectively absorb all colors. If appropriate proportions of three primary pigments are mixed, the result reflects so little light as to be called "black".

Black background

Black background

Black background

Black background