الثلاثاء، 18 أكتوبر 2011
الأحد، 26 يونيو 2011
الثلاثاء، 21 يونيو 2011
Broken Enlish!
I just saw a movie named (Broken English), the film talks about this lady( Norah) who has bad luck finding her soul mate, Just like us my dear Aminata and Elham. But as all movies she met a handsome French guy and spent with him the weekend. But she still felt lonely as if she does not know what she wants. Indeed , she does not believe that someone will really love her! Anyway, the French guy left her but he asked her to go with him to France. She refused to go with him and she also quit her job. Norah's best friend has to go to Paris to deliver packages to her husband friends. So, the depressed Norah tries to find the French guy , unfortunately she lost his number !! When they have to go back to the US, Norah decided to spend more time in Paris. And Finally on the subway that supposed to drop her to the airport she found him the French guy!
I'm wondering why this magic and romantic stories do not happen to us. Why when we fall in love we have the most awful circumstances! I'm so depressed so sad . I want to find the man that I will live w/ him forever. I do not know what to say about my hopeless relation with …………!!
الأحد، 19 يونيو 2011
الأربعاء، 15 يونيو 2011
السبت، 11 يونيو 2011
الخميس، 9 يونيو 2011
The Periodic Table Expands Once Again
The Periodic Table Expands Once Again
By THE ASSOCIATED PRESS
Published: June 8, 2011k
The elements were recognized by an international committee of chemists and physicists. For now, they are called Elements 114 and 116 — permanent names and symbols will be chosen later.
People are not likely to run into either of them. Scientists make them in labs by smashing atoms of other elements together to create the new ones.
“Our experiments last for many weeks, and typically, we make an atom every week or so,” said Ken Moody, a chemist with the Lawrence Livermore National Laboratory who was part of the discovery team.
In contrast to more familiar elements like carbon, gold and tin, the new ones are short-lived. Atoms of 114 disintegrate within a few seconds, while 116 disappears in a fraction of a second, Dr. Moody said.
Both elements were discovered by a collaboration of scientists from Livermore and Russia. They made them by smashing calcium ions into atoms of plutonium or another element, curium. The official recognition, announced last week, cites experiments done in 2004 and 2006.
In the periodic table, the number of an element refers to the number of protons in the nucleus of an individual atom. Leading the list is hydrogen (H) with one. Sodium (Na) has 11, Iron (Fe) has 26, and silver (Ag) has 47.
In the past 250 years, new elements have been added to the table about once every two and a half years on average, said Paul Karol of Carnegie Mellon University. He chaired the committee that recognized the new elements.
Despite the number 116, the new additions bring the total number of recognized elements to 114 — Elements 113 and 115 have not been officially accepted.
Dr. Moody said he had not talked to his colleagues about what element names to propose to an international group of scientists for approval, although they will have to end in “ium.”
For now, the elements have temporary names derived from their numbers. In recent decades, new elements have generally been named for famous scientists, producing such monikers as nobelium and einsteinium, said Peter F. Rusch, a consultant in Mountain View, Calif., who leads the American Chemical Society committee on nomenclature, terminology and symbols.
Before the two newcomers, the most recent addition to the periodic table came two years ago. Element 112 was named copernicium in honor of astronomer Nicolaus Copernicus.
Making new elements is a byproduct of an effort to discover things about the atomic nucleus, Dr. Moody said. “It’s just basic science,” he said. “And kind of fun.”
Dr. Moody, 56, recalled that the periodic table had 104 elements when he was in high school. At the time, chemists thought the list was about finished, he said.
He added that he recently spoke about his work to some high school students and found them fascinated.
To them the periodic table “is an icon,” he said. “The fact that it can change and it can be added to, I think, is a novel idea for younger people.”
Not so for most older people.
Dr. Moody said he does not talk about his work at parties “because people don’t generally invite you back.”
People are not likely to run into either of them. Scientists make them in labs by smashing atoms of other elements together to create the new ones.
“Our experiments last for many weeks, and typically, we make an atom every week or so,” said Ken Moody, a chemist with the Lawrence Livermore National Laboratory who was part of the discovery team.
In contrast to more familiar elements like carbon, gold and tin, the new ones are short-lived. Atoms of 114 disintegrate within a few seconds, while 116 disappears in a fraction of a second, Dr. Moody said.
Both elements were discovered by a collaboration of scientists from Livermore and Russia. They made them by smashing calcium ions into atoms of plutonium or another element, curium. The official recognition, announced last week, cites experiments done in 2004 and 2006.
In the periodic table, the number of an element refers to the number of protons in the nucleus of an individual atom. Leading the list is hydrogen (H) with one. Sodium (Na) has 11, Iron (Fe) has 26, and silver (Ag) has 47.
In the past 250 years, new elements have been added to the table about once every two and a half years on average, said Paul Karol of Carnegie Mellon University. He chaired the committee that recognized the new elements.
Despite the number 116, the new additions bring the total number of recognized elements to 114 — Elements 113 and 115 have not been officially accepted.
Dr. Moody said he had not talked to his colleagues about what element names to propose to an international group of scientists for approval, although they will have to end in “ium.”
For now, the elements have temporary names derived from their numbers. In recent decades, new elements have generally been named for famous scientists, producing such monikers as nobelium and einsteinium, said Peter F. Rusch, a consultant in Mountain View, Calif., who leads the American Chemical Society committee on nomenclature, terminology and symbols.
Before the two newcomers, the most recent addition to the periodic table came two years ago. Element 112 was named copernicium in honor of astronomer Nicolaus Copernicus.
Making new elements is a byproduct of an effort to discover things about the atomic nucleus, Dr. Moody said. “It’s just basic science,” he said. “And kind of fun.”
Dr. Moody, 56, recalled that the periodic table had 104 elements when he was in high school. At the time, chemists thought the list was about finished, he said.
He added that he recently spoke about his work to some high school students and found them fascinated.
To them the periodic table “is an icon,” he said. “The fact that it can change and it can be added to, I think, is a novel idea for younger people.”
Not so for most older people.
Dr. Moody said he does not talk about his work at parties “because people don’t generally invite you back.”
http://www.nytimes.com/2011/06/09/science/earth/09elements.html?_r=1&ref=science
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