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.

Prism (disambiguation)

A prism is a transparent optical component with flat surfaces that refract light.

Prism may also refer to:

Science and mathematics

Government

Media and entertainment

Publications

Music

Ten Commandments

The Ten Commandments, also known as the Decalogue, are a set of commandments which the Bible describes as having been given to the Israelites by God at biblical Mount Sinai. The Ten Commandments are listed twice in the Hebrew Bible, first at Exodus 20:1–17, and then at Deuteronomy 5:4–21. Both versions state that God inscribed them on two stone tablets, which he gave to Moses. According to New Testament writers, the Ten Commandments are clearly attributed to Moses (Mark 7:10, see also John 7:19).

Modern scholarship has found likely influences in Hittite and Mesopotamian laws and treaties, but is divided over exactly when the Ten Commandments were written and who wrote them.

The commandments include instructions to worship only God, to honour parents, and to keep the sabbath; as well as prohibitions against idolatry, blasphemy, murder, adultery, theft, dishonesty, and coveting. Different religious groups follow different traditions for interpreting and numbering them

Terminology

Decalogue (album)

Decalogue is the only full-length solo album (so far) from Jedi Mind Tricks producer Stoupe the Enemy of Mankind. The album was released on March 31, 2009 under Babygrande Records. Vocals are provided by various rappers and the production is entirely handled by Stoupe himself.

Track listing

All songs are produced by Stoupe the Enemy of Mankind

References

External links

Decalogue I

The Decalogue - One (Polish: Dekalog, jeden) is the first part of the television series The Decalogue by Polish director Krzysztof Kieślowski, possibly connected to the first and second imperatives of the Ten Commandments: "I am the Lord your God; you shall have no other gods before me" and "Thou shalt not make unto thee any graven image."

A university professor (Henryk Baranowski) trains his young son in the use of reason and the scientific method, but is confronted with the unpredictability of fate. Reason is defied with tragic results.

Plot

Krzysztof lives alone with Paweł, his 12-year-old and highly intelligent son, and introduces him to the world of personal computers. They have several PCs in their flat and do many experiments with programming such as opening/closing the doors or turning on/off the tap water with help of the PC.

One cold winter morning Paweł asks his father to give him a physics problem to solve. Krzysztof does so and Paweł solves it very quickly on his computer. Later Paweł becomes depressed at the sight of a stray dead dog and begins to wonder about deeper things in life. When asked about the nature of death, his father gives him a very objective (but obviously somewhat cold) explanation of death as the ending of all vital functions.