Espejo

Espejo: es una superficie lisa y pulida que refleja los rayos de luz y hace que las imágenes se formen. El arte de hacer espejos planos se originó en la Edad Media.

El ejemplo más sencillo es el espejo plano. En este último, un haz de rayos de luz paralelos puede cambiar de dirección completamente en conjunto y continuar siendo un haz de rayos paralelos, pudiendo producir así una imágen virtual de un objeto con el mismo tamaño y forma que el real. La imagen resulta derecha pero invertida en el eje normal al espejo

¿Cómo se hacen los espejos?

La mayoria de los espejos se hacen cubriendo un trozo de vidrio con una capa de metal. El vidrio ofrece la superficie lisa necesaria para la reflexion buena y protege el metal, para que no se raye. La superficie plateada (la parte de atras del espejo) se cubre con una sustancia de proteccion , tales como goma laca.

El espejo ocupa un lugar importante en la mitología y las supersticiones de muchos pueblos. La imagen que en él se refleja se identifica a menudo con el alma o espíritu de la persona: de ahí por ejemplo que los vampiros, cuerpos sin alma, no se reflejen en él. Cuando un moribundo está a punto de dejar este mundo, es común que se cubran los espejos, por temor a que el alma del agonizante quede encerrada en ellos.

El espejo es también objeto frecuente de consulta: se le juzga capaz de mostrar sucesos y objetos distantes en el tiempo o el espacio. En el cuento de Blancanieves, el espejo tiene la facultad de hablar y responde a las preguntas que le formula la madrastra. J.R.R.Tolkien retoma con su célebre «espejo de Galadriel» la tradición del espejo capaz de mostrar el futuro. En la novela Harry Potter y la piedra filosofal, de J.K.Rowling, aparece el espejo de Oesed (Deseo leído a la inversa), que no refleja la imagen de quien lo contempla, sino sus deseos más profundos.

Alan Kay

Alan Kay, is currently a Fellow (Partner-Partner) Hewlett Packard Company and President of Viewpoints Research Institute, has made known especially for his ideas about personal computers, laptop, his invention of the window interface which are now widespread in all modern computer systems and object-oriented programming.
Every creative process has been motivated by a deep interest in the world of childhood and education.

As a founding member of the Xerox Palo Alto Research Center (PARC) led a group that developed the current workstations, the modern concept of the personal computer (precursor of the Macintosh), use the desktop, Ethernet, laser printers and worknetwork "client-server."

Before joining Xerox, Alan was a member of the ARPA research team at the University of Utah, who developed 3-D graphics. It was there where he earned a master's degree and doctorate (both cum laude) for his work in developing the first personal computer object-oriented graphics.

Alan graduated in mathematics and molecular biology at the University of Colorado. He also participated in the original design of the ARPANET, which later became the internet today.

Subsequently, he was chief scientist of Atari and Apple partner-collaborator, and then was vice president of Research and Development at the Walt Disney Company. In 2001 he founded Viewpoints Research Institute, a nonprofit organization located in Glendale (California). In 2002 he joined Hewlett-Packard as a partner-collaborator.

He has received numerous awards and honors, including the ACM Software Systems Award, the JD Warnier Prix D'Informatique, and the 2001 C & C Prize from NEC. He has been elected to the American Academy of Arts and Sciences, the National Academy of Engineering, and the Royal Society of Arts of the United States.He was recently awarded an honorary doctorate from Stockholm's KTH.

Former professional jazz guitarist, composer and theatrical designer, is also a classical performer of tubular body and lives in Los Angeles with his wife, Bonnie.

Celofán

El celofán es un polímero natural derivado de la celulosa. Tiene aspecto de una película fina, transparente, flexible y resistente a esfuerzos de tracción, pero muy fácil de cortar.

El proceso de fabricación del celofán consiste en disolver fibras de madera, algodón o cáñamo en un álcali para hacer una solución llamada viscosa, la cual luego es extruída através de una ranura y sumergida en un baño ácido que la vuelve a convertir en celulosa. Por medio de un proceso similar, utilizando un orificio en lugar de una ranura, se produce una fibra llamada rayón.

John Lennon
John Lennon was an English musican and singer-songwriter who rose to worldwile fame as on of the founding members of The Beatles, one of the most comercially successful and critically acclaimed acts in the history of popular music.

Lennon was in the war-time England, on 9 October 1940.
Born and raised in Liverpool, Lennon became involved as a teenager in the skiffle craze; his firts band, The Quarrymen, evolved into The Beatles in 1960.
As the group disintegrated towards the end of the decade, Lennon embarked on a solo career that produced the critically aclaimed albums "John Lennon/Plastic Ono Band" and "Imagine", and iconic songs such as "Give Peace a Chance" and "Imagine".

Lennon disengaged himself from the music business in 1975 to devote time to his family, but re-emerged in 1980 with a new album, "Double Fantasy". Three weeks after its release, John Lennon was murdered by Mark Chapman

diana de gales :)

The Princess of Wales, youngest daughter of John Spencer, better known by the name of Lady Di, was born at Park House, Sandringham (Norfolk), the July 1, 1961 and died in Paris the nightof 30 to 31 August 1997 . Achieved worldwide popularity through her marriage to Charles, heir to the British throne, after her divorceand, even more, by his untimely death.
On June 21, 1982 Lady Diana gave birth to her eldest son, PrinceWilliam.
The second son of the Princes of Wales, Henry, born onSeptember 15, 1984.
The marriage ended for good in March 1994 to February 29, 1996Diana agreed to divorce from Carlos that was announced in a romantic relationship with Diana and James Gilbey and unleashed a veritable war of mutual accusations between the defenders of the princess and the royal house.
In the late 80's, the Princess of Wales became well known for supporting causes such as humanitarian assistance to victims ofAIDS or the fight against the use of landmines. She helped poorchildren in Africa and was on the side of many people like NelsonMandela, the Dalai Lama or Mother Teresa of Calcutta.


The death of Diana Spencer praised the social phenomenon of "dianamanía" and the British royal house, which initially showed no little hesitation, acceded to popular demand and held in his honor a magnificent funeral in Westminster, which was broadcast live ontelevision and attended by about two million people.

Neil armstrong

Neil Armstrong was born on August 5, 1930 in Wapakoneta, Ohio.He was the son of Stephen Koenig Armstrong and Viola LouiseEngel, his family was of German origin and spent his childhood indifferent locations because their father was auditor of the State ofOhio.

Armstrong developed a great interest in flying at a very early age when his father he had brought to the National Air Races Ohio. His interest intensified in the six years when he made his first flight in aFord Tri-Motor airplane. Since that time, was fascinated by aviation.

At the age of 16, I was a student pilot. Received a license before graduating from high school en1947 Blume.

Graduarce after received a grant from the United States Navy. Laterhe enrolled at Purdue University and began studying aeronautical engineering.

By mid 1950, Armstrong moved to the Edwards Flight Center of NASA in California, where he became a research pilot in manyhigh-speed aircraft, including the popular X-15, which reached aspeed of more than 6,300 kilometers per hour.

He moved to El Lago, Texas, near the Space Flight Center in Houston, to begin instruction. There was subjected to four years of hard training for the Apollo program achieved the goal of bringingthe first man on the moon before the end of the decade, aspromised in 1961, President John Fitzgerald Kennedy.

so Neil Armstrong became the first human to set foot on the lunar surface.

Tim berners lee

Tim berners lee

Born on June 8 in 1955. London, uk.Is considered the father of the web, his parents weremathematicians, during his time at the university built a computer with a limited welder asprogrammers. Your occupation is computer scientist, His religion was Unitarian Universalist, he qualified in engineering physics in 1976

In 1994 he joined the Laboratory of Computer Science and Artificial Intelligence Massachusetts Institute of Technology. He moved to U.S. and launched the W3C, which currently runs. The W3C is an international organization for standardization of Web technologies.

On January 8, 2007 was announced as winner of the Charles Stark Draper Prize, 2007.

A conference room in the center of the AOL campus bears his name.

On October 10, 2008 received the degree of Doctor Honoris Causa.

Worked in Geneva at CERN. Usually communicated with his colleagues that other research centers, sending articles that cited article, which contained graphic

WWW is currently the most widely used Internet service and is considered the main vehiclecause and the great expansion of private and commercial Internet.

Tim Berners Lee currently works at MIT. 3WC is the founder of the corporation that works inthe development and standardization of the WWW.

But while still under investigation, his great creation remains the mainstay of the universal web and what began as a simple idea of connecting scientists through Internet and currently has over 100 million pages

"Barack Obama"

Barack Hussein Obama was born in Honolulu (Hawaii) August 4, 1961. His biological parents are US-Kenyan Ann Dunham and Barack Obama who separated two years after his birth. Later his mother married an Indonesian, Lolo Soetoro.

Between 6 and 10 years Barack Obama attended in Jakarta, Indonesia. He then returned to Honolulu where he was raised by his maternal grandparents.

Studied law at Columbia University and Harvard Law School Law School, where he became president of the prestigious Harvard Law Review.

Jobs in Chicago some years as a community organizer. In this time he met Michelle LaVaughn Robinson, whom he married and has two daughters, Malia and Natasha.

In 1996 he managed to become deputy from Illinois and in 2004 reached a seat in the senate. He also served as Professor of Constitutional Law at Harvard University.

In 2007 launched his candidacy for the Democratic Party primary elections where after a bitter campaign to defeat the powerful Hillary Clinton.

In the presidential elections of November 4, 2008 defeated Republican John McCain, becoming the first black to reach the White House as President of the United States.

primera parte: mark zuckerberg

Born into a jewish his passion for information manifested itself early and already twelve years old began programming. He studied at ardsley High School and phillips exeter academy andin 2002 entered harvard university massachusetts. two years later in early february 2004 only nineteen years old and with his roommates incollege launched a new website social network facebook

originally called thefacebook facebook came up with the project's initial intention to create a network between students of harvard university. The site's name referred to the newsletter thatmany universities give their new students with the intention of helping them meet each other on arrival at the center.

Facebook services offered consisted mainly of the ability to addfriends with whom they could exchange phtos and messagesand join groups one of the utilities that more would de developedsubsequently .Each user who should de registerd had a wall allowingthe friends write messages or send gifts to it to see.Thesupermuro a further improvement would alsoembed flashanimation format.

Michael Jackson

The king of pop

Michael Jackson one of the artists most widely loved and deeply influential artist of all time, leaves an indelible mark on popular music and culture.
Michael Joseph Jackson (Gary, Indiana, August 29, 1958 - Los Angeles, June 25, 2009), known in the art world as Michael Jackson, was a singer, composer and performer of American pop music and its variants. Known as the "King of Pop. "
During his extraordinary career, he sold an estimated 750 million albums worldwide, released 13 # 1 singles and became one of the few artists that were installed twice on the Walk of Fame in Hollywood. The Guinness Book of World Records recognized Michael Jackson as the most successful entertainer of all time and <> as the biggest selling album of all time. Jackson won 13 Grammys and Receive the American Music Award's Artist of the Century Award.
Michael Jackson started in the music business at age 11 with his brothers as a member of the Jackson 5. In the decade of 1980, defined the art form of music video deals with soil such videos as "Billie Jean""Beat It" and the epic "Thriller. " Jackson sound, style and dance moves inspired later generations of pop, soul, R & B and hip-hop artists.
Finally on the morning of June 25, 2009, the artist suffered a cardiac arrest at his rented mansion in Holmby Hills. Forensic experts from the Forensic Institute in Los Angeles claimed that Jackson's death was caused by poisoning of propofol.

Goodbye