In physics, a phonon is a quantized mode of vibration occurring in a rigid crystal lattice, such as the atomic lattice of a solid. The study of phonons is an important part of solid state physics, because phonons play a major role in...

High Quality Content by WIKIPEDIA articles! In molecular biology, the polymerase chain reaction (PCR) is a technique to amplify a single or few copies of a piece of DNA across several orders of magnitude, generating thousands to millions...

High Quality Content by WIKIPEDIA articles! A spacecraft is a craft or machine designed for spaceflight. On a sub-orbital spaceflight, a spacecraft enters space then returns to the Earth. For an orbital spaceflight, a spacecraft enters a...

High Quality Content by WIKIPEDIA articles! No. 102 Squadron was a Royal Air Force squadron. Formed in August 1917 as a night bomber unit at Hingham with the RAF F.E.2b. The squadron moved to France and specialised in attacks behind the...

High Quality Content by WIKIPEDIA articles! Oceania (sometimes Oceanica) is a geographical, often geopolitical, region consisting of numerous lands-mostly islands in the Pacific Ocean and vicinity. The term "Oceania" was coined in 1831...

OpenID is an open, decentralized standard for authenticating users which can be used for access control, allowing users to log on to different services with the same digital identity where these services trust the authentication body....

High Quality Content by WIKIPEDIA articles! The Rubik's cube is the original and most well-known of the three-dimensional sequential move puzzles. There have been many virtual implementations of this puzzle in software. It is a natural...

High Quality Content by WIKIPEDIA articles! Panchkula is a planned city in Panchkula District, Haryana/Punjab, India. It is a satellite city of the Union Territory of Chandigarh. The prestigious Chandimandir Cantonment Headquarters of...

High Quality Content by WIKIPEDIA articles! The Victoria and Albert Museum (often abbreviated as the V&A) in London is the world's largest museum of decorative arts and design, housing a permanent collection of over 4.5 million objects....

High Quality Content by WIKIPEDIA articles! Warren Gamaliel Harding (November 2, 1865 - August 2, 1923) was the 29th President of the United States, serving from 1921 until his death from a heart attack or stroke in 1923. A Republican...

High Quality Content by WIKIPEDIA articles! The Thai alphabet is used to write the Thai language and other minority languages in Thailand. It has forty-four consonants, fifteen vowel symbols that combine into at least twenty-eight vowel...

High Quality Content by WIKIPEDIA articles! Perspective in the graphic arts, such as drawing, is an approximate representation, on a flat surface, of an image as it is perceived by the eye. The two most characteristic features of...