Prism

In optics, a prism is a transparent optical element with flat, polished surfaces that refract light. At least two of the flat surfaces must have an angle between them. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and rectangular sides, and in colloquial use "prism" usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include glass, plastic and fluorite.

A dispersive prism can be used to break light up into its constituent spectral colors (the colors of the rainbow). Furthermore, prisms can be used to reflect light, or to split light into components with different polarizations.

How prisms work

Light changes speed as it moves from one medium to another (for example, from air into the glass of the prism). This speed change causes the light to be refracted and to enter the new medium at a different angle (Huygens principle). The degree of bending of the light's path depends on the angle that the incident beam of light makes with the surface, and on the ratio between the refractive indices of the two media (Snell's law). The refractive index of many materials (such as glass) varies with the wavelength or color of the light used, a phenomenon known as dispersion. This causes light of different colors to be refracted differently and to leave the prism at different angles, creating an effect similar to a rainbow. This can be used to separate a beam of white light into its constituent spectrum of colors. Prisms will generally disperse light over a much larger frequency bandwidth than diffraction gratings, making them useful for broad-spectrum spectroscopy. Furthermore, prisms do not suffer from complications arising from overlapping spectral orders, which all gratings have.

List of Humanx Commonwealth planets

This is a list of the fictional planets in the Humanx Commonwealth series of novels by Alan Dean Foster.

Alaspin

Alaspin has large jungles surrounded by equally large savannas and river plains; its only notable celestial feature is two moons.

Currently the planet has no sentient race; the native race died out, possibly by racial suicide, over 75,000 years ago leaving behind hundreds of ancient, abandoned cities that have proved a source of fascination to modern xeno-archaeologists.

A variety of lifeforms currently live on Alaspin, most notably the Alaspinian minidrag.

Annubis

Annubis is most notable for the fictional Hyperion forests from which the fictional drug bloodhype is manufactured. In an attempt to eradicate the highly addictive and deadly drug, the trees were burned in 545 A.A. and are thought to be completely destroyed.

The planet first appeared in the novel Bloodhype.

Blasusarr

Blasusarr is the homeworld of the AAnn race and is often called the Imperial Home World. Climate is dry and hot, largely desert, the preferred atmospheric conditions of the AAnn. Beyond this, little is known about Blasusarr other than the fact that it is very well-protected by a detection and space defense network. Its capital city, also the capital of the AAnn Empire, is Krrassin.

Yoshida Brothers

The Yoshida Brothers (吉田兄弟, Yoshida Kyōdai) are Japanese musicians who have released several albums on the Domo Records label.

The two brothers are performers of the traditional Japanese music style of Tsugaru-jamisen which originated in northern Japan. They debuted in 1999 in Japan as a duo playing the shamisen. Their first album sold over 100,000 copies and made them minor celebrities in Japan, a fact that surprised the Yoshida Brothers themselves. They have since attracted an international audience.

Their music has been a fusion of the rapid and percussive Tsugaru-jamisen style along with Western and other regional musical influences. In addition to performing songs that are only on the shamisen, they also use instruments such as drums and synthesizers.

The commercials for the Nintendo's Wii video game console that began airing in North America in November 2006 featured the Yoshida Brothers song "Kodo (Inside the Sun Remix)".

Members

Ryōichirō Yoshida (吉田 良一郎, Yoshida Ryōichirō, born 26 July 1977) and Kenichi Yoshida (吉田 健一, Yoshida Ken'ichi, born 16 December 1979) were born in Noboribetsu in Hokkaido, Japan. The two brothers have played the shamisen from a very young age. They both began to study and play the shamisen from five years of age under Koka Adachi, learning the Minyō-shamisen style; from about 1989 they studied the Tsugaru-jamisen style under Takashi Sasaki.

Rum

Rum is a distilled alcoholic beverage made from sugarcane byproducts, such as molasses, or directly from sugarcane juice, by a process of fermentation and distillation. The distillate, a clear liquid, is then usually aged in oak barrels.

The majority of the world's rum production occurs in the Caribbean and Latin America. Rum is also produced in Austria, Spain, Australia, New Zealand, Fiji, Hawaii, the Philippines, India, Reunion Island, Mauritius, South Africa, Taiwan, Thailand, Japan, the United States and Canada.

Rums are produced in various grades. Light rums are commonly used in cocktails, whereas "golden" and "dark" rums were typically consumed straight or neat, on the rocks, or used for cooking, but are now commonly consumed with mixers. Premium rums are also available, made to be consumed either straight or iced.

Rum plays a part in the culture of most islands of the West Indies as well as in The Maritimes and Newfoundland. This beverage has famous associations with the Royal Navy (where it was mixed with water or beer to make grog) and piracy (where it was consumed as bumbo). Rum has also served as a popular medium of economic exchange, used to help fund enterprises such as slavery (see Triangular trade), organized crime, and military insurgencies (e.g., the American Revolution and Australia's Rum Rebellion).

Årum

Årum is a village in the north-eastern part of Fredrikstad municipality, Norway.

Coordinates: 59°16′N 11°07′E / 59.267°N 11.117°E / 59.267; 11.117

Rùm

Rùm (Scottish Gaelic pronunciation: [rˠuːm]), a Scottish Gaelic name often anglicised to Rum, is one of the Small Isles of the Inner Hebrides, in the district of Lochaber, Scotland. For much of the 20th century the name became Rhum, a spelling invented by the former owner, Sir George Bullough, because he did not relish the idea of having the title "Laird of Rum".

It is the largest of the Small Isles, and the 15th largest Scottish island, but is inhabited by only about thirty or so people, all of whom live in the village of Kinloch on the east coast. The island has been inhabited since the 8th millennium BC and provides some of the earliest known evidence of human occupation in Scotland. The early Celtic and Norse settlers left only a few written accounts and artefacts. From the 12th to 13th centuries on, the island was held by various clans including the MacLeans of Coll. The population grew to over 400 by the late 18th century but was cleared of its indigenous population between 1826 and 1828. The island then became a sporting estate, the exotic Kinloch Castle being constructed by the Bulloughs in 1900. Rùm was purchased by the Nature Conservancy Council in 1957.