Tuesday, March 31, 2009

Mechanical Engineering


Summary:

Mechanical engineering deals with different applications of mechanical systems using physics principles. Mechanical engineering has improved since the world wars and nowadays it is important to many other fields. Mechanical engineering includes designing machines and engines. Mechanical engineers have basic background of related fields of study. They also need to consider designing machines that are economical and they have to provide safe and good products to people. The mechanical engineering program covers many areas of interest. The first area is designing, which includes drafting programs and mechanisms for different mechanical products. The second area includes making products such as machines. The third area studies “statics and dynamics.” The fourth area studies heat and temperature to make machines such as fridges. The fifth area studies fluids and liquids. The last area is concerned with measurements and instruments. In conclusion, nowadays, mechanical engineering is developing widely, and one of the most common focuses is robotics.

Reaction:

The article is completely understandable. It doesn't have scientific words that nobody can understand. I liked the beginning of the article, which reminded the history of mechanical engineering. Also, it's interesting to recognize which mechanical engineering include. I couldn't imagine that all modern industries are depending on mechanical engineering. In addition, mechanical engineering program that takes in many areas of interest is interesting to me. As well, the article generally is exciting to read and I really learned valuable information about mechanical engineering.

Reference:

Dhulipala, S. (2007, February 28). Mechanical Engineering. Suite10 website. Retrieved March, 24, 2009, from
http://mechanical-engineering.suite101.com/article.cfm/mechanical_engineering

Sunday, March 29, 2009

The Flag of Saudi Arabia




The flag of Saudi Arabia has changed many times. Before the current flag has decorated Arabic words and sword, it had a white crescent with a green background. The Saudi Government used the current flag formally in 1973. The designer of current flag was Hafed Wahbah who was the Ambassador of the King Abdul Aziz in Egypt. The flag of Saudi Arabia is considered holy due to Islamic declaration of faith that is called "Shahadah." The meaning of "Shahadah" is "There is no gad but (Allah), Mohammed is the messenger of god (Allah)." Wherefore, the flag is not used on clothes or any kind of items. It shows the Islamic rule of the country. Also, the sword, which is on the flag, shows the force of traditional weapon. Finally, it is only the flag that represents the Islamic nation.