The Global Positioning System (GPS)

Technology is the collection of procedures used in the production of goods or services or in the execution of objectives, such as scientific investigation. Technology can be the knowledge of methods, processes, etc. or it can be implanted in machines, computers, devices and factories, which can be functioned by individuals without in depth knowledge of the workings of such things.

The human species ' use of technology began with the transformation of natural resources into simple tools. The prehistoric discovery of how to control fire increased the available sources of food and the invention of the wheel helped humans in travelling in and controlling their environment. Recent technological developments, including the printing press, the telephone,

The Global Positioning System (GPS) is a satellite-based navigation system that consists of 24 orbiting satellites, each of which makes two circuits around the Earth every 24 hours. These satellites transmit three bits of information – the satellite 's number, its position in space, and the time the information is sent. These signals are picked up by the GPS receiver, which uses this information to calculate the distance between it and the GPS satellites. This is an invention that has helped people to find their ways, saving their time locating a restaurant or a nearest hospital. Also, during a disaster such as hurricanes or earthquakes, roads and boards were destroyed and GPS allowed the rescue team to track down the victims. Besides, GPS is an efficient device for road users, especially since it can hold much information, including the weather conditions and electronic compass. Are they any disadvantages of GPS? The answer is yes and one of the disadvantages of GPS is that the battery may fail, bringing much inconvenience to drivers. Moreover, GPS may sometimes fail because GPS works around the globe and there are certain locations in which the system may not work

He was amazed to find out that the outcome of the reaction were much lighter than uranium. On 2 December, 1942, Fermi used uranium and control rods and created the first controlled self-sustaining nuclear reaction. Nuclear plants started to grow in the 1950s and 1960s, and were welcome as a safe and clean alternative energy.The amount of energy produced by the fission of a single uranium atom is approximately 10 million times the energy produced by the combustion of a single coal atom. This seems to be a fool proof invention but it has many disadvantages since the incident of Three Mile Island nuclear reactor on 28 March 1979. The disadvantages of the invention includes producing harmful radioactive waste and causing nuclear accidents, which in turn cause great harms to the humans and aquatic life.

Processed Food

Processed foods have been altered from their original state, either for safety reasons or because it makes them easier to be kept or easier to use. The most common processing methods are canning, freezing, refrigeration, dehydration and aseptic processing. It isn 't really the method of processing that makes some processed foods so bad -- it 's the ingredients used in those products. Processed foods made with Trans fats, saturated fats, and large amounts of sodium and sugar aren 't good for us. They 're low in vitamins and minerals and eating too much