lunes, 10 de septiembre de 2012

Last summer we visited a sheep farm in Quetzaltenango.the farm house had lots of rooms for guests,but we didn t sleep there. in the garden was a small canpsite so we state there in a tend. the front door was gust a hole

jueves, 16 de agosto de 2012

what is electricitity??????
Electricity is a form of energy. Electricity is the flow of electrons. All matter is made up of atoms, and an atom has a center, called a nucleus. The nucleus contains positively charged particles called protons and uncharged particles called neutrons. The nucleus of an atom is surrounded by negatively charged particles called electrons.

what is magnetism??????

A magnet attracts magnetic material with a force called magnetism. There are different kinds of magnetic material, the most common one being iron.

Pure iron is quite a soft material and is not usually used for building or making objects. The iron has to be strengthened or hardened by adding other substances to it.

 Most of these substances are not magnetic and thus dilute the magnetism in the.

kinds of energy


Kinetic Energy:
Potential Energy:
Thermal, or heat energy:
Thermal, or heat energy:
Electrical Energy
Electrochemical Energy:
Electromagnetic Energy (light):
Sound Energy:
Nuclear Energy:

lunes, 13 de agosto de 2012

Thomas Alva Edison & Nikon Tesla were the two great scientist.
 .
who developed many devices that have greatly influenced life around the world. But these two great men were never at ease with each other. Edison and Tesla were termed as the biggest rivals with the tales of their bitterness still repeated over time.
 Thomas Alva Edison gave the world many amazing inventions including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb.
Nikola Tesla was an inventor, mechanical engineer, and electrical engineer. He was an important contributor to the birth of commercial electricity, and is best known for his many revolutionary developments in the field of electromagnetism in the late 19th and early 20th centuries.
These two men have contributed a lot to the welfare of mankind. But they became ardent rivals, as both usually saw their lives intertwined and saw each other on the opposite ends as components.





When did the fight between Tesla and Edison start?

Tesla worked in Paris and arrived in USA in 1984, he had a letter of recommendation from the previous employer Charles Batchelor. In the letter of recommendation to Thomas Edison, it is claimed that Batchelor wrote, ‘I know two great men and you are one of them; the other is this young man’.
Edison hired Tesla to work for his Edison Machine Works. Tesla’s work for Edison began with simple electrical engineering and quickly progressed to solving some of the company’s most difficult problems.


 Tesla was even offered the task of completely redesigning the Edison company’s direct current generators.
Edison was clueless about the great benefits of AC until Tesla showed him plans for his induction motor.

jueves, 2 de agosto de 2012

lunes, 9 de julio de 2012

 the narraganset people

the narraganset people dress with fringred leather pants and beaded necklaces. The narraganset have live in the narraganset indian reservation for hundred of years the narraganset live on a way of live
thath was based on cooperation. the narragansett lands were divide
into a number of territoriesand each territory had it owns ruler.Gradually,though,the narraganset and the europeans began tomistrust each other.many narraganset were kiled in wars