Electromagnetic field


An electromagnetic field (also EMF or EM field) is a physical field produced by moving electrically charged objects. It affects the behavior of charged objects in the vicinity of the field. The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction. It is one of the four fundamental forces of nature (the others are gravitation, the weak interaction, and the strong interaction).
The field can be viewed as the combination of an electric field and a magnetic field. The electric field is produced by stationary charges, and the magnetic field by moving charges (currents); these two are often described as the sources of the field. The way in which charges and currents interact with the electromagnetic field is described by Maxwell's equations and the Lorentz force law.
From a classical perspective, the electromagnetic field can be regarded as a smooth, continuous field, propagated in a wavelike manner; whereas from the perspective of quantum field theory, the field is seen as quantized, being composed of individual particles.

Albert Einstein Biography


Albert Einstein 14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of general relativity, effecting a revolution in physics. For this achievement, Einstein is often regarded as the father of modern physics and one of the most prolific intellects in human history. He received the 1921 Nobel Prize in Physics "for his services to theoretical physics, and especially for his discovery of the law of the photoelectric effect". The latter was pivotal in establishing quantum theory within physics.
Near the beginning of his career, Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led to the development of his special theory of relativity. He realized, however, that the principle of relativity could also be extended to gravitational fields, and with his subsequent theory of gravitation in 1916, he published a paper on the general theory of relativity. He continued to deal with problems of statistical mechanics and quantum theory, which led to his explanations of particle theory and the motion of molecules. He also investigated the thermal properties of light which laid the foundation of the photon theory of light. In 1917, Einstein applied the general theory of relativity to model the structure of the universe as a whole.
He was visiting the United States when Adolf Hitler came to power in 1933, and did not go back to Germany, where he had been a professor at the Berlin Academy of Sciences. He settled in the U.S., becoming a citizen in 1940.[6] On the eve of World War II, he helped alert President Franklin D. Roosevelt that Germany might be developing an atomic weapon, and recommended that the U.S. begin similar research; this eventually led to what would become the Manhattan Project. Einstein was in support of defending the Allied forces, but largely denounced using the new discovery of nuclear fission as a weapon. Later, together with Bertrand Russell, Einstein signed the Russell–Einstein Manifesto, which highlighted the danger of nuclear weapons. Einstein was affiliated with the Institute for Advanced Study inPrinceton, New Jersey, until his death in 1955.
Einstein published more than 300 scientific papers along with over 150 non-scientific works. His great intelligence and originality have made the word "Einstein" synonymous with genius.

European Cultur


            Last year we have a guest from other Continent, she is Ms. Asnate. Her nickname is Nate. She is from a beautiful country named Latvia, in Northern Europe. Her age is about 23, and she is a nice person.
            She come for explain to us what’s is the difference between Indonesia and Europe. She explain many things. Example about the seasons, about the social life, clothes, foods, and many more. She also tell us about the buildings and the art in her country, Latvia. Ms. Asnate told us that in Latvia, they have winter almost six month in one year. And she said that in northern Europe and southern Europe, the seasons are different. In northern Europe, the winter is very long, and in the southern Europe, the winter is just counted by days.
            In the disscusion, we see that the Europian culture is different than Indonesian culture. Even the different is not really big, there are many culture that doesn’t same with Indonesia. Altough, there’s still cultures that same with in Indonesia. Example, we shakin’ hand if we meet, and they’re too. So, the Europian and Indonesian culture is different but still have the same culture. That’s the summary of the disscusion.
            We learned that Europian culture and Indonesian culture is different but still there’s the same. The cultures of both also has the different unique food, or unique dance. We also learned that diversity are in everywhere. So, we must respect to other cultural wherever we are.
            From the CCU class, I have very mush benefit that can use in our daily life. Especially if we go to other countries, or meet new people from far away countries like Latvia, or others. We also can speak English much better than before cause we practice with the people from other countries, and we know much about other countries. We have new friends too. That’s all that I can tell. Thank you.

Dog Party

Hello friends! I’m elsha, i want to tell you about my experience ...
 At Sunday, in babarsari field my dog and i joined in this party. I get the information from my uncle. I very love my dog. My dog is my love that never cant be replced.
     I went to Dog Party at 10.00 o’clock and arrived at half past ten o’clock. In there, we did many activities there were see dog competition, run comprtition, etc. (eksetera)
    My dog and i was very happy ..  

Halo :D

Hai Elsha punya blog baru nih :) follow yah semuahhhhhhh ;;)