Reger wrote an enormous amount of music, but very little of it is played nowadays. He wrote in a late-Romantic style. He is best remembered for his organ music. He liked to write fugues and sets of Variations. His "Fantasy and Fugue on BACH" is one of the hardest pieces ever written for organ. He wrote a lovely song called "Marias Wiegenlied" ("Mary’s lullaby).
Saint Stephen
Saint Stephen () is known as the first martyr of Christianity.
Therefore, he is also called the Protomartyr (). He is venerated as a saint in the Roman Catholic Church, as well as in the Eastern Orthodox Church. His feast day was historically kept on August 3. His name means 'laurel wreath' or 'crown' in Greek. His death is described in the Book of Acts. He was stoned to death for blasphemy and is remembered on the Feast of St. Stephen, December 26.
The Dark Tower (series)
The Dark Tower is a series of eight books by American writer Stephen King that tells the tale of lead character Roland Deschain's quest for the "Dark Tower."
Jon Corzine
Jon Stevens Corzine (born January 1, 1947) is an American politician. He was the 54th Governor of the state of New Jersey. He represented New Jersey in the United States Senate from 2001 until 2006, when he stepped down to take his seat as governor. On November 3, 2009, Jon Corzine lost re-election for another four years as governor. The person who won was Chris Christie, who became the governor on January 20, 2010.
James McGreevey
James Edward "'Jim"' McGreevey (born August 6, 1957) was the 52nd Governor of New Jersey. In 2004, he said that he was gay. He resigned as governor after he said he had an affair with a male employee. He was the first openly gay governor of any state in the history of the United States.
Physical quantity
In physics, a physical quantity is any physical property that can be quantified, that is, be measured using numbers. Examples of physical quantities are mass, amount of substance, length, time, temperature, electric current, light intensity, force, velocity, density, and many others. A physical quantity is always measured of natural non-living objects (Inanimate objects)
The foundation of physics rests upon physical quantities in term of which the laws of physics are expressed. Therefore, these quantities have to be measured accurately. Physical quantities are often divided into two categories; base quantities and derived quantities. Derived quantities are those quantities which are derived from other physical quantities. Examples of derived quantities are force, velocity, acceleration etc.
Helicopter rotor
A rotor is the rotating part of a helicopter which generates lift, either vertically in the case of a main rotor, or horizontally in the case of a tail rotor.
Before the development of powered helicopters in the mid 20th century, autogyro pioneer "Juan de la Cierva" researched and developed many of the basics of the rotor. Cierva is credited with successful development of multi-bladed, fully articulated rotor systems. This type of system is widely used today in many multi-bladed helicopters.
Variations (music)
In music, the word variation is to play a piece of music and change the notes or add parts into it but also making it sound like the piece of music in another way.
Many composers wrote pieces which are examples of theme and variation. Sometimes the theme is one they made up, at other times they took a theme that another composer had already written and then made variations on it.
There are lots of ways of varying a tune, and each variation will change it in a different way. A variation may play the tune much faster or much slower, it may change the tune by adding extra sharps and flats or other ornamental notes, or by playing the tune in octaves. It may change the harmony or the rhythm or use different instruments. It may combine the tune in different parts (counterpoint).
Composers have used variations in music for centuries. In the Renaissance and Baroque periods composers wrote variations on a short tune in the bass which was repeated again and again. This was called a ground bass or sometimes it was a passacaglia or chaconne. Renaissance composers also liked writing what they called “divisions”. This meant varying a tune by playing it, for example, at twice the speed or half the speed etc. so that crotchets (quarter notes) became minims (half notes) or quavers (eighth notes).
George Frideric Handel wrote a famous set of variations for harpsichord called "Harmonious Blacksmith", and Johann Sebastian Bach wrote the "Goldberg Variations", which was a set of 30 variations: a very long piece of music. It was written for a man who found it difficult to sleep at night, so he would ask his harpsichord player, whose name was Goldberg, to play to him.
Many composers from the Classical, Romantic and 20th century classical music periods wrote sets of variations. Wolfgang Amadeus Mozart wrote several, one of which was based on a French folktune which we know in Britain as “Twinkle, Twinkle, Little Star”. Beethoven wrote several wonderful sets of variations. Many of them were for piano, but he also used the form in other pieces e.g. the slow movement of his . Schubert often wrote variations on tunes from his own songs.
Other composers who wrote variations include Brahms, Elgar, Schoenberg, and Britten.
Logo (programming language)
Logo is a programming language that is easy to learn. It is used to teach students and children to program a computer. It was developed to process lists of words. It was like the language LISP.
In 1967, the first Logo ran on a mainframe computer, a machine called a teletype was used to type in and printout the results. There was no screen.
In 1969, it was used to control a Floor Turtle. Commands were added to send the turtle forwards and backwards, and to turn the turtle to left or right. This turtle had pen with different colors. When it moved, it left a trail on the floor.
When a new version of Logo was developed to draw graphics on a screen, it used the same commands. This was called Turtle graphics.
There are 170 versions of Logo. Many of them are open source and free. There are three Logo textbooks that can be downloaded free. Logo is usually an interpreted language.
Load the Logo program. Type the next line in the command box.
The computer replies.
A spiral drawn using recursion.
Using the editor, type in this new definition.
Type this in the command box.
On the screen you will see.
Logo Programs
Online books
Lisp (programming language)
Lisp (used to be called LISP) is a programming language. It is among the oldest programming languages that are still used today. Only Fortran is one year older. Lisp was designed by John McCarthy in 1958. The best-known versions of LISP are Common Lisp, Scheme and Clojure. Many concepts that are used in modern programming languages were first created in Lisp.
Linked lists are a very important data structure in Lisp.
The basic concepts behind Lisp are easy to learn. Logo is another version of Lisp that was made for children. Logo can help young children develop skills and become efficient within the programming language.
In Lisp, operations are written in prefix notation, and they start and end with parentheses. For example, the formula formula_1 is written as:
Because Lisp is a functional language, Lisp programs often use recursion to solve problems. Here is a Scheme program that finds the factorial of a number. The function (factorial n) starts by testing if formula_2 or not. If formula_3, then (factorial 0) is 1. If formula_4, then (factorial n) returns the product of formula_5 and the factorial of formula_6.
Linked lists are an important idea in Lisp. The list without any things in it is known as the "empty" or "nil list", and is written as '(). A list that has things in it is written as '(dog cat).
The operation car is used to get the first thing of a list. For example,
(car '(1 2 3 4 5 6 7))
(car '())