... themselves from high places. However, these devices did not perform well. According to Donald Lopez, Senior Advisor to the director of the National Air and Space Museum, in his book Aviation a Smithsonian guide, people of that time tried to imitate birds. For example "in 1010 a ... a Smithsonian Guide, 1995, p 17). In the 1800s, inventors turned their attention to studying the shape of the wings and how it performed in stream of air. As a consequence, the result was the glider. According to Lopez (1995): "George Cayley's most profound insight was separating the concepts of lift, propuls...

• Word Count: 1526
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... uses in society. Research Brief History: - Helicopter: The first concept of rotary-wing aviation came from the Chinese. Da Vinci's vaunted spiral design created in 1490, called the Helical Air Screw, has often been cited as the first serious attempt to produce a working helicopter. A wide amount of minor inventions contributed to the advancement of the helicopter. Between the Fifteenth ... technology and more need, the next step in helicopter advancement would soon come. The autogyro evolved from earlier models during this time. Two Cierva C.40 autogyros were used for Air Observation Po...

• Word Count: 2393
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... , both developed by Richard Fiedler. The smaller, lighter Flammenwerfer (the Kleinflammenwerfer) was designed for portable use carried by a single man. Using pressurized air and carbon dioxide or nitrogen it belched a stream of burning oil for as much as 54 feet. Fielder's second, larger model the Grossflammenwerfer. ... and, when these ran out, it was not unknown for a machine gun crew to solve the problem by urinating into the jacket. Whether air or water cooled, machine guns still jammed frequently, especially in hot conditions or when used by inexperienced operators. Consequently ma...

• Word Count: 1931
• Approx Pages: 8
• Grade Level: High School

... a chance to break into careers or management positions that or else would have been off limits for women. For those that did not, jobs in the air, on the sea, as nurses and doctors, and war correspondents were offered. For the entire time of the war, the U.S. government flattered American women to ... only be a temporary need. Little did they know, some would turn out to be much more lasting. There were many different types of air jobs that women could take over to release men to fight in the war. They could take over jobs as mail pilots, pilots of passenger planes, ... they came from a w...

• Word Count: 1572
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... over obstacles. The fastest firing weapon was the M-60. It was the only gun that reloaded by itself. These guns were mounted and were placed on fighter planes for air-to-air combat. The most maneuverable fighter plane was the Sopwith Camel. Tanks were invented by Britain and were first tested during World War One. There were many vehicles used in World ... Normandy, we must blast our way onshore and get a good lodgment before he can bring up sufficient reserves to turn us out. While we are engaged in doing this, the air must hold the ring and must make very difficult the movement of ene...

• Word Count: 1405
• Approx Pages: 6
• Grade Level: High School

... The Wars, fire is an essential part of Robert Ross' journey, and along with the other three elements, gives mythological references a sound base. "Earth and Air and Fire and Water" is the inscription found on the grave stone of Robert Ross (page 190). As the novel ends with Robert Ross' passing on, these ... these hurdles. After passing his final and toughest ordeal, with fire, he will forever hold this status. Traditionally in a myth of this nature, Earth and Air would be considered man's natural elements, whereas fire and water would be would constitute hurdles. In the case of Robert ...

• Word Count: 1291
• Approx Pages: 5
• Grade Level: High School

... bombs with greater explosive power to become available, guns were increasingly rapid in firing and lighter and engines in tanks and aircraft were less prone to mechanical failure. The British Air Forces employment of Radar also enabled them to regain control over the British skies in the crucial Battle of Britain. The utilization of the newly developed Radar by the British ... Air forces enabled them to avoid a direct invasion of their country by Germany which marked a great turning point in the war. Numerous radar stations were set up on the British coast ... pilots to have an advanc...

• Word Count: 1274
• Approx Pages: 5
• Grade Level: Undergraduate

... waters. The German submarines were controlling the wars in the Oceans until the allied forces began to attack back with convoy systems, technology and air support. These factors would lead the strong German navy to defeat. The German navy would be defeated but only after they had recorded record ... happening at sea, however there were other factors that helped limit the number of U-boats to enable the convoy system to run smoother. Technology and air support also helped in the reduction of the U-boat army. The introduction of technology to escort vessels limited the Wolf Pack strategy t...

• Word Count: 1770
• Approx Pages: 7
• Grade Level: High School

... positioned on a flat tripod. These guns would rapidly overheat and become unusable with in minutes if fired continuously. There were two was that the gun was cooled, water cooled and air cooled. Water cooled machine guns have a water filled jacket which required the crew to carry large amounts of water with them. It was not unheard of crew urinating in the ... jacket to cool the weapon. Air cooled machine guns had air vents built into the weapon. Because of the weight and the water needed to cool the weapon the machine gun became a defensive weapon. It was not until 1915 ... when allie...

• Word Count: 1642
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

... out of school and worked at various jobs to help support the family. "While still in his teens he took a position with the Frayer-Miller Air-Cooled Car Company, a move which proved to be a turning point in his life- (Hudson 72). In his spare time he would take correspondence ... England organizing a racing team for the Sunbeam Motor Company. When he came back to the States, he went to Washington and proposed creating an air squadron made up solely of racecar drivers. "He reasoned that their quick reflexes, their knowledge of engines, and their familiarity with high speeds would ... )....

• Word Count: 2088
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• Has Bibliography
• Grade Level: High School

... develops this idea; the description of Dawn massing her army', the referral to the stealth' of the snowflakes and the deathly' nature of the air are images that are at once animated in the reader's mind so that it seems that nature is making an almost human effort to destroy the ... a soldier who is being slowly, but irreversibly, savaged by the pressures of war. Thus, snow which is of course white, seems to color the air black and is conveyed as hostile- attacking in shivering ranks of grey' and even something as ordinary as the wind tugging on the wire surrounding the trench ... Breen ...

• Word Count: 2437
• Approx Pages: 10
• Has Bibliography
• Grade Level: High School

... on Pearl Harbor, Hawaii caused military leaders concern about the vulnerability of the California coast to enemy attack" (Weller np). During WWII, the United States Army Air Force (USAAF) established a number of air bases in Nevada to train pilots in fighters and bombers. There were many airfield bases in places such as Las Vegas, Tonopah, Reno and Fallon Nevada. Another aspect ... the mainstay of Nevada tourism but also the state's leading industry" (History np). By the end of World War II, Nevada had lost over 300 of their Army and Air Force personnel, as well as 196 men from the Navy...

• Word Count: 1431
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• Has Bibliography

... were men, machines, supplies, aircraft, ships, airborne troops, weather, and the condition of the beaches. The success of D-Day depended on the three main areas. The Allies must control the air and sea and German troops would have to be dispersed through out Europe. By spring 1944 Allied bombers were pounding Germany and the German U-Boats were no longer a threat. The ... destroyed at sea. Others preferred to let the enemy come ashore and annihilate them with troops and tanks waiting on the beaches. In May 1944 the Allies began making tactical air attacks in Northern France. Their main ...

• Word Count: 1983
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... before. This time the target was the Canadian line. Here through terrible fighting, withered with shrapnel and machine-gun fire, hampered by rifles which jammed, violently ill and gasping for air through mud-soaked handkerchiefs, they held on until reinforcements arrived. So, Canada's first appearance in the European front showed the world that Canada was a force to be reckoned with and ... and triumphed together. Four Canadians won the Victoria Cross and Major-General Arthur Currie, commander of the 1st Division, was knighted on the battlefield by King George V." Meanwhile, in the air ...

• Word Count: 2211
• Approx Pages: 9
• Has Bibliography
• Grade Level: High School

... not change their demands. In the same month, General Tojo Hideki was named the new prime minister for Japan and also Japanese naval planners submitted an outline of a carrier base air surprise attack on the U.S. battle fleet near Pearl Harbor. The man to come up with the concept of a surprise attack was Admiral Yamamoto Isoroku. Yamamoto lived and studied in the ... crippled the Japanese carrier Shokaku severely enough that it had to retire. Many Japanese planes were destroyed which forced the Japanese to abandon the Port Moresby invasion because of inadequate air cover and Allied land-...

• Word Count: 1484
• Approx Pages: 6
• Has Bibliography
• Grade Level: High School

... witness the horrors that children in countries where battles were fought did. In many cases children in Europe and England were evacuated from their homes, living in fear of constant air raids (Barrow, n.d). Children who lived in cities that were occupied by the Germans saw even greater horrors. Although Canadian children were not eye witness to the destruction children were also ... taught about the war. The curriculum changed; school boards offered teachers suggestions on how incorporate war teachings into the classroom. Students were taught about war emergency, defense training, firs...

• Word Count: 2120
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... chemical or biological agents is the protective mask. The mask covers the entire face, and charcoal and fiber filters to ensure that both gases and particles are removed purify the air inhaled. If used in time and worn properly, it gives practically complete protection to the lungs and eyes. The difficulty lies in knowing when to put on the mask. There ... , and boots can be treated to resist penetration by agents. Impermeable clothing is simply a plastic barrier between the man and the hostile materials. Collective protectors are available to purify the air drawn into buildings and fort...

• Word Count: 1349
• Approx Pages: 5
• Has Bibliography
• Grade Level: High School

... just forward of the stacks. A much larger explosion followed the torpedo blast (10,13). The second explosion was a mixture of coal dust stirred into the air by the concussion of the torpedo and the oxygen in the air. A spark, probably from the boilers, ignited this volatile mix (195). Eighteen minutes later the luxury liner was gone leaving 1,195 people dead, among them ... ...

• Word Count: 1988
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

... the two countries continued throughout the end of the war. By mid 1942, Canadian and Allied forces were using technology developed by the NRC throughout their army corps, navies, and air forces. Radar was far from the only thing the NRC contributed to the war, it was accompanied by weapons systems, the famed "anti-gravity" suit still in use by many ... air forces, proximity fuses, and biological warfare agents - but as historian Daniel Kevles noted, "The atomic bomb only ended the war. Radar won it." It is due to the many Canadian ... ...

• Word Count: 1679
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... force. The destructive capabilities of army's were greatly increased with new technological weapons of war. New guns were developed over time, machine guns and more accurate guns were invented . Tanks , air planes , poisonous gas, and submarines soon joined the war. Steamships and railroads quickly allowed the movement of army foot soldiers to become more rapid. The ability to develop these new ... treaty limited the size of the German army . Germany was prohibited from importing or manufacturing weapons or war material. Germany was forbidden to build or buy submarines or have an air fo...

• Word Count: 1738
• Approx Pages: 7
• Grade Level: High School

... the earlier use of the word floundering, and carries on the sea theme in a more definite way. The man is giving up the fight, onomatopoeic of the desperate fight for air under a sea. The "sea" in this situation is actually a cloud of green gas, but the effect is the same; suffocation and frantic snatching for help. The sudden realisation that death ... knows it won't happen and this would be a terrifying prospect to anybody. The use of the word "drowning" in this highly descriptive area of the poem depicts the struggle for air. Although in this case gas replaces sea, the concept is stil...

• Word Count: 2354
• Approx Pages: 9
• Grade Level: High School

... of B. anthracis can be produced and stored in a dry form and remain viable for decades in storage or after release. "A little more than two pounds of anthrax spilled into the air of a city the size of New York could be expected to kill more than 120,000 people."(Weiss) The question still remains in the mind of a lot of people, how ... . Overgarmnets are also used to protect from against contact with open wounds. Protective shelter is usally best if it is a closed room, ideally insulated with plastic and ventilated with filtered air. Vaccination of course must be for a specific agent, but...

• Word Count: 1379
• Approx Pages: 6
• Grade Level: High School

... newfound arms to support Franco in the Spanish Civil War. Hitler used the Spanish civil war as a testing ground for his idea of blitzkrieg. He also tested his very strong air force using them to bomb the republican city of Guernica. The next step towards war in Europe was the German re-militarization of the Rhineland. According to the Versailles Treaty ... we had no army worth mentioning if the French had taken any action we would have been easily defeated; our resistance would have been over in a few days. And the Air Force we had then was ridiculous-a few Junkers 52s from Lufthansa an...

• Word Count: 1833
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

... gassed," General Charteris wrote in his diary" (Gilbert 145). Hundreds of troops that were exposed to the chlorine gas lay out in the open trying to breath as much fresh air as possible, but because of the water in their lungs, they slowly drowned to death. The symptoms of Chlorine gas were easily preventable with the use of a gas mask. Because ... victim would then die from either suffocation, or drowning. Suffocation occurred from two possibilities, the first happened when the lungs died, and stopped working. The second form was when the air passages filled up with mucous. This clogge...

• Word Count: 2016
• Approx Pages: 8
• Grade Level: High School

... the curtains. Rasputin's crazy life styles and administrative policies were intolerable to the public which finally resulted in his death. The death of Rasputin never allowed Russians to breathe the air of freedom as the tsarina continued her unpopular activities. The revolutionary Bolsheviks used this opportunity and seized the power with the help of a revolution (Fuhrman T)....

• Word Count: 1462
• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate