Friday, 12 February 2010

For all my friends

"A best friend

is always there, whether you need advice,

or a pep talk,

or even a shoulder to cry on.

A best friend

listens with her heart

and is always honest with you,

even though the truth

may not be

what you want to hear.

A best friend

knows all your secrets,

understands your fears

shares your deams.

A best friend

never stops believing in you

even if you give up

on yourself.

You are

that kind of friend

to me.

And no matter what happens,

you always will be.

You are my best friend...

my forever friend"




By: Renee Duvall
By Tânia

And the carnival arrived

By: Tânia


Thursday, 4 February 2010

Technology- heaven or hell?

Today the society is facing a problem: Is technology, generally speaking, making us lazier or is it contribuiting to the development of our capacities?
Well, in our opinion the technology can be very useful to know what´s happening in the world, to know about other cultures and our personal interests.
We can buy and sell everything you want without leaving your sofa :P.

Tecnhology specially computers are very useful for make research, to do more elaborated works and we can write, change the colours and the type of the words( that is very fun :D ).We can make works more attractive with pictures and more information, besides a lot of people exaggerate the information that they put in the works that sometimes they don´t interpret well.

when a teacher ask for research some students just turn on the computer, open an internet page and do copy- paste without read it( but we never, never, never and never do that ;D)

The people who are addicted to internet became sedentary and they lose their social life.
We can conclude that technology have advantages and disadvantages.



By: Ju, tih and tanii.

Wednesday, 3 February 2010

A warm hug



Otters two months warm to his lair in the Sea Life Park in Oberhausen, Germany.
Everyone needs a hug, even the animals!=D
By:Tânia

Thursday, 28 January 2010

Holocaust


Many people argue that Holocaust never happened, with so many information and pictures that everybody views, do you believe that is only a joke?

well...we don´t think so!

Now-a-days exist a lot of traces that show us the real story of suffering of so many people!

German physicians carried out such experiments at Auschwitz, Dachau, Buchenwald, Ravensbrück, Sachsenhausen and Natzweiler concentration camps.
The most notorious of these physicians was Dr. Josef Mengele, who worked in Auschwitz. His experiments included placing subjects in pressure chambers, testing drugs on them, freezing them, attempting to change eye color by injecting chemicals into children's eyes and various amputations and other brutal surgeries.

Thursday, 21 January 2010

Photovoltaic painel


The term "photovoltaic" meaning "light", and "voltaic", meaning electric, from the name of the Italian physicist Volta, after whom a unit of electro-motive force, the volt, is named. The term "photo-voltaic" has been in use in English since 1849.

The photovoltaic effect was first recognized in 1839 by French physicist A. E. Becquerel. However, it was not until 1883 that the first solar cell was built, by Charles Fritts, who coated the semiconductor selenium with an extremely thin layer of gold to form the junctions. The device was only around 1% efficient. Subsequently Russian physicist Aleksandr Stoletov built the first solar cell based on the outer photoelectric effect (discovered by Heinrich Hertz in 1887). Albert Einstein explained the photoelectric effect in 1905 for which he received the Nobel prize in Physics in 1921. Russell Ohl patented the modern junction semiconductor solar cell in 1946, which was discovered while working on the series of advances that would lead to the transistor.

The modern age of solar power technology arrived in 1954 when Bell Laboratories, experimenting with semiconductors, accidentally found that silicon doped with certain impurities was very sensitive to light. Daryl Chapin, with Bell Labs colleagues Calvin Fuller and Gerald Pearson, invented the first practical device for converting sunlight into useful electrical power. This resulted in the production of the first useful solar cell with a sunlight energy conversion efficiency of around 6%.The solar battery was first demonstrated on April 25, 1954. The first spacecraft to use solar panels was the US satellite Vanguard 1, launched in March 1958 with solar cells made by Hoffman Electronics. This milestone created interest in producing and launching a geostationary communications satellite, in which solar energy would provide a viable power supply. This was a crucial development which stimulated funding from several governments into research for improved solar cells.
Photovoltaic painel is very usefull to product energy without polluting. Almost all countries are investing in the renovables energy to protect the environment. Besides most of people can´t buy this alternative because it is very expensive and profits are only visible in the long term!
By: Joana, Tina and Tânia ^^

Wednesday, 20 January 2010