Snow crystals form when tiny supercooled cloud droplets (about 10 mm in diameter) freeze. These droplets are able to remain liquid at temperatures lower than -18C (0F), because to freeze, a few molecules in the droplet need to get together by chance to form an arrangement similar to that in an ice lattice; then the droplet freezes around this "nucleus." Experiments show that this "homogeneous" nucleation of cloud droplets only occurs at temperatures lower than -35C (-31F)

Trafalgar Square, set in central London, is one of Britain's great tourist attractions. A visit to the capital would be incomplete without going to marvel at Nelsons Column and the four giant lions at its base, or to admire the lovely splashing fountains and to feed the pigeons, who have made their home here. Built to commemorate Admiral Nelson, the square was named after the Spanish Cape Trafalgar where his last battle was won.

In cosmology, the steady state theory is a model developed in 1949 by Fred Hoyle, Thomas Gold and others as an alternative to the Big Bang theory. Although the model had a large number of supporters among cosmologists in the 1950s and 1960s, the number of supporters decreased markedly in the late 1960s and today it is considered a non-standard cosmology. It is also the basis for another theory known as the quasi-steady state theory which postulates a lot of little big bangs occurring over time. 

Russian is the most geographically widespread language of Eurasia and the most widely spoken of the Slavic languages. Russian belongs to the family of Indo-European languages and is one of three (or, according to some authorities, four) living members of the East Slavic languages, the others being Belarusian and Ukrainian (and possibly Rusyn, often considered a dialect of Ukrainian).

Windows XP is a line of proprietary operating systems developed by Microsoft for use on general-purpose computer systems, including home and business desktops, notebook computers, and media centers. The letters "XP" stand for eXPerience.[2] Codenamed "Whistler" after Whistler, British Columbia, as many Microsoft employees skied at the Whistler-Blackcomb ski resort during its development, Windows XP is the successor to both Windows 2000 and Windows Me, and is the first consumer-oriented operating system produced by Microsoft to be built on the Windows NT kernel and architecture. Windows XP was first released on October 25, 2001, and over 400 million copies are in use, according to a January 2006 estimate by an IDC analyst.[3] It is succeeded by Windows Vista, which was released to volume license customers on November 8, 2006, and worldwide to the general public on January 30, 2007.

The Tupolev Tu-134 (NATO codename: 'Crusty') is a Soviet twin-engined airliner, similar to the American Douglas DC-9 and the French Sud Aviation Caravelle. The original version featured a glazed-nose design and, like certain other Russian airliners (including its sister model the Tu-154), it can operate from unpaved airfields.

Whiskey - [from the Gaelic for "water of life"], spirituous liquor distilled from a fermented mash of grains, usually rye, barley, oats, wheat, or corn. Inferior whiskeys are made from potatoes, beets, and other roots. The standard whiskeys of the world are Scotch (commonly spelled whisky ), Irish, American, and Canadian.

In cosmology, the steady state theory is a model developed in 1949 by Fred Hoyle, Thomas Gold and others as an alternative to the Big Bang theory. Although the model had a large number of supporters among cosmologists in the 1950s and 1960s, the number of supporters decreased markedly in the late 1960s and today it is considered a non-standard cosmology. It is also the basis for another theory known as the quasi-steady state theory which postulates a lot of little big bangs occurring over time. 

Sculpture - art of producing in three dimensions representations of natural or imagined forms. It includes sculpture in the round, which can be viewed from any direction, as well as incised relief, in which the lines are cut into a flat surface.

Windsurfing is a surface water sport using a windsurf board, also commonly called a sailboard, usually two to five meters long and powered by a single sail. The rig is connected to the board by a free-rotating flexible joint called the Universal Joint (U-Joint). Unlike a rudder-steered sailboat, a windsurfer is steered by the tilting and rotating of the mast and sail as well as tilting and carving the board. This method of controlling the board's direction is called the free-sail system.