Royal Institution Christmas LecturesThe Royal Institution Christmas Lectures are a series of lectures on a single topic each, which have been held at the Royal Institution in London each year since 1825, missing 1939–1942 because of the Second World War. The lectures present scientific subjects to a general audience, including young people, in an informative and entertaining manner. Michael Faraday initiated the Christmas Lecture series in 1825, at a time when organised education for young people was scarce. Faraday presented nineteen series of lectures in all.
Algèbre linéairevignette|R3 est un espace vectoriel de dimension 3. Droites et plans qui passent par l'origine sont des sous-espaces vectoriels. L’algèbre linéaire est la branche des mathématiques qui s'intéresse aux espaces vectoriels et aux transformations linéaires, formalisation générale des théories des systèmes d'équations linéaires. L'algèbre linéaire est initiée dans son principe par le mathématicien perse Al-Khwârizmî qui s'est inspiré des textes de mathématiques indiens et qui a complété les travaux de l'école grecque, laquelle continuera de se développer des siècles durant.
USS LST-550USS LST-550 was a United States Navy in commission from 1944 to 1946. She also served in a non-commissioned status with the Military Sea Transportation Service as USNS LST-550 (T-LST-550) from 1952. LST-550 was laid down on 13 November 1943 at Evansville, Indiana, by the Missouri Valley Bridge and Iron Company. She was launched on 9 March 1944, sponsored by Mrs. Henry D. Hoover, and commissioned on 10 April 1944. During World War II, LST-550 initially was assigned to the European Theater of Operations.
USS LST-5USS LST-5 was an of the United States Navy built during World War II. She was transferred to the Royal Navy in December 1944. Like many of her class, she was not named and is properly referred to by her hull designation. LST-5 was laid down on July 12, 1942, at Pittsburgh, Pennsylvania by the Dravo Corporation. Launched on October 3, 1942, she was sponsored by Mrs. Wanetta Rose Barker and was commissioned on February 22, 1943.
USS LST-548USS LST-548 was a United States Navy in commission from 1944 to 1946. She also served in a non-commissioned status with the Military Sea Transportation Service as USNS LST-548 (T-LST-548) from 1952. LST-548 was laid down on 30 December 1943 at Evansville, Indiana, by the Missouri Valley Bridge and Iron Company. She was launched on 22 February 1944, sponsored by Mrs. Robert L. Koch, and commissioned on 3 April 1944. During World War II, LST-548 initially was assigned to the European Theater of Operations.
Îlot de stabilitéL’îlot de stabilité est un ensemble hypothétique de nucléides transuraniens qui présenteraient une période radioactive très supérieure à celle des isotopes voisins. Ce concept est issu du modèle en couches du noyau atomique, dans lequel les nucléons sont vus comme des objets quantiques qui se répartissent dans le noyau en niveaux d'énergie de façon similaire aux électrons dans les atomes : lorsqu'un niveau d'énergie est saturé de nucléons, cela confère une stabilité particulière au noyau.
Fritz le chatFritz the Cat (en français, Fritz le chat) est un personnage de comics américain créé par Robert Crumb en 1959. Figure marquante des « comics underground », cette bande dessinée pour adulte fut adaptée au cinéma à deux reprises, notamment par Ralph Bakshi en 1972. Fritz est le premier personnage créé par Robert Crumb, quand il était enfant, pour une bande dessinée réalisée avec son frère Charles. Il apparaît officiellement pour la première fois en 1959 sous le nom de Fred dans Cat Life, puis en 1960 dans une histoire intitulée Robin Hood.
Frank PiatekFrank Piatek (born 1944) is an American artist, known for abstract, illusionistic paintings of tubular forms and three-dimensional works exploring spirituality, cultural memory and the creative process. Piatek emerged in the mid-1960s, among a group of Chicago artists exploring various types of organic abstraction that shared qualities with the Chicago Imagists; his work, however relies more on suggestion than expressionistic representation.
HM LST-422HMS LST-422 was a United States Navy that was transferred to the Royal Navy during World War II. As with many of her class, the ship was never named. Instead, she was referred to by her hull designation. LST-422 was laid down on 12 November 1942, under Maritime Commission (MARCOM) contract, MC hull 942, by the Bethlehem-Fairfield Shipyard, Baltimore, Maryland; launched 10 December 1942; then transferred to the United Kingdom and commissioned on 4 February 1943. LST-422 saw no active service in the United States Navy.
The Unanswered Question (lecture series)The Unanswered Question is a lecture series given by Leonard Bernstein in the fall of 1973. This series of six lectures was a component of Bernstein's duties as the Charles Eliot Norton Professor of Poetry for the 1972/73 academic year at Harvard University, and is therefore often referred to as the Norton Lectures. The lectures were both recorded on video and printed as a book, titled The Unanswered Question: Six Talks at Harvard.
