find ourselves today. In this essay, I aim to compare combustion under ‘normal’ operating conditions to combustion under what is considered to be ‘abnormal’ operating conditions. In particular this essay will attempt to give an insight into the phenomenon of ‘knock’ in a homogeneous charge spark-ignited engine. A literature review followed by a discussion of what ‘knock’ is, factors affecting it, including its main causes and effects will make up the main body of this essay. Literature Review In order
Introduction Medical Gloves existence is becoming more and more important. Scientists and engineers strive to create cheaper and safer medical gloves for use in areas such as medical field and industries. This essay comprises and analyses the method of production of medical gloves and also the differences between materials used in producing medical gloves. It shows the pros and cons of each materials of medical gloves and also the efficiency of its production. The study will be conducted by researching
volcanoes erupt? Why are they dangerous to human beings? All these questions and more you will find out in this essay. There are people who can find out the time of the next volcano eruption and they also can find out if the volcano will erupt again or maybe it won't ever erupt. But how do these people know that? There is something else that has concerned people for many years "earthquakes". This essay will include the meanings of earthquake and volcano. Firstly, let's explain what volcanoes are
Task 1 Can polar bears and people coexist? Polar bears are the largest land predator on earth today. They live in the Arctic area, surrounded by the northern nations like Norway, Greenland and Canada. The effects of global warming have caused the temperatures to rise, which have led the Arctic ice to melt. Because the polar bears’ territory is shrinking, they are forced to hunt further inland. They usually hunt on the sea ice, but they cannot do that now. A polar bear can starve for months, but