NT 1310 Physical Networking Unit 9 Assignment 1 : Transmitters. Exercise 1 : Light Sources and Companents LAB 1 : New Building – Optical – Network Amir R. Ghattas The differences between LED and Laser Transmitters LED LED (Light-Emitting Diode) is a two-lead semiconductor light source. It resembles a basic p-n junction diode (is a boundary or interface between two types of semiconductor material‚ p-type and n-type‚ inside a single crystal of semiconductor.‚ which emits light when activated.
Premium Optical fiber Laser
Chapter 9 Review Questions 1. What is magnetism? 2. Torque is ________. 3. A magnetic field is _________. 4. True or False: A permanent magnet is a piece of material that has been magnetized and can hold its magnetic strength for a reasonable length of time. 5. How is an electromagnet produced? 6. Which of the following produces the best electromagnet? 7. Unlike poles of a magnet _________each other and like poles_________ each other. 8. What part does polarity play in the operation of
Premium Electric motor Magnetic field Magnet
September 11‚ 2001 Lexcia Negron 7995 History Pearblossom Private School February 17‚ 2014 Abstract The 9/11 terrorist attack in the United States has become one of the most known disasters in history. Because of the horrible tragedies that happened on September 11‚ 2001‚ America has had some effects from it. From getting stopped more than usual in the airport‚ to having an Immigration system and also having an Act that allows the government to intrude in people’s lives. Security protocols
Premium September 11 attacks Al-Qaeda United States
lives lost as well as the events on September 11‚ 2001. This field based learning trip to the 9/11 Memorial and Museum was especially interesting since this historic event happened during my existence. On September 11‚ 2001‚ I was five years and in St. Andrew‚ Jamaica‚ therefore far away from the terrorist attacks and I luckily lost no one. Before going to the museum‚ I had seen videos from September 9‚ 2001 that convey so much astonishment and despair by the people who were standing outside the
Premium World Trade Center September 11 attacks
be‚ and i think many families feel resentment‚ guilt‚ and profound grief.. In addition‚ after 9/11 many victims probably feel unsafe in the U.S. It created a great insecurity in people’s mind. If such an attack could happen on the US soil‚ . who knows what else could happen‚ September 11th is probably a very hard day for them especially with all the newspaper and news shows reliving the moment. Overall‚ 9/11 has impacted the families and victims greatly‚ they probably feel unsafe‚ and extremely
Premium September 11 attacks Al-Qaeda World Trade Center
Hook: On average 3 to 5 days after 9/11 there was 44% of the adult US population experienced substantial stress. Bridge: People might even say that 9/11 was one of the worst events in history that caused serious problems for people like‚ depression‚ Post traumatic stress disorder‚ or the suicide rate in America. After 9/11 people most likely felt like they were on an emotional rollercoaster. Thesis: September 11‚ 2001 was a day that millions of Americans could never forget. Point: A 12 year-year-old
Premium September 11 attacks Al-Qaeda World Trade Center
Muscular System: Anatomy Review: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: Muscle Type Cardiac Skeletal Smooth Shape of cell rectangular Parallel‚ cylindrical banded # of nuclei multinucleated multinucleate One or two Striations striated striated non-striated Control Contraction and relaxation for the heart Provides movement and support Involuntary contraction of organ system 2. What attaches muscles to bone? _______Tendons__________________
Premium Muscle Myosin Muscle contraction
English 4th Genre Task D Which Science Fiction film is more evolved‚ District 9 or Avatar? General themes of Science Fiction films such as aliens vs. humans‚ futuristic/alternate settings‚ the use of advanced technology and the exploration of popular societal and cultural issues are used to prove the argument. In District 9‚ like many typical Science Fiction films‚ the ‘other’ is the alien which invades Earth for its resources. The pre-1999 film‚ Men in Black‚ introduces us to aliens who live among
Premium Science fiction film Extraterrestrial life Life
Have you used your cell phone today? How about the internet? Without the years of 1970-present we would not have these everyday items. In the past 45 years‚ Americans have experienced hardship as well as prosperity. For example‚ Americans experienced 9/11 which made Americans question their own security. In addition‚ Americans also faced the Watergate scandal‚ which caused them to question corruptibility of the government (“new voices‚ new Frontiers…."1277-1289). An important group of people living
Premium Google New Orleans Hurricane Katrina
lives were taken from us‚ including 125 men and women serving here at the Pentagon. Thirteen years of moments they would have shared with us. Thirteen years of memories they would have made.” 9/11 was not just terrible for the people involved and their families‚ but for everyone in the United States. 9/11 was the day when a group called al-Qaeda made a plan to bomb multiple buildings in the New York area because they felt that the Christian-Jewish alliance was trying to destroy Islam. The group
Premium United States Al-Qaeda Islam