A light-emitting diode (LED) is a semiconductor light source.[6] LEDs are used as indicator lamps in many devices and are increasingly used for other lighting. Appearing as practical electronic components in 1962‚[7] early LEDs emitted low-intensity red light‚ but modern versions are available across the visible‚ ultraviolet‚ and infrared wavelengths‚ with very high brightness. When a light-emitting diode is switched on‚ electrons are able to recombine with holes within the device‚ releasing energy
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POLLUTIONS Environmental issues become one of the top topics nowadays. Environmental issues like pollution‚ climate change‚ global warning and deforestation are being discussed this day. Pollution is one of biggest concern in the environmental issues because it covers all which are water pollution‚ air pollution‚ soil pollution and noise pollution. Pollution is contaminants that can cause an adverse change s to environment and human health. Pollutants is components of pollution where it can be foreign
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Ways To Reduce The Effects of Pollution Nowadays‚ pollution has become a major issue that concerns all countries worldwide. Majority of the pollution are results of the selfish behaviour of humans. There are many types of pollutions‚ examples are water pollution and air pollution. Each of this pollution can be dealt with different methods depending on the source of the error. In general‚ both air and water pollution can be reduced by utilizing the modern technology that humans have developed
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Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy‚ such as noise‚ heat or light. Pollutants‚ the components of pollution‚ can be either foreign substances/energies or naturally occurring contaminants. TYPES OF POLLUTION Water Pollution As the name suggests‚ “Water Pollution” is the type of pollution that involves the contamination of various water bodies. Various aquatic creatures
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Impact of Pollution The environment is a part of our daily lives yet most people do not consider the impact that their actions have on the environment. People interact with and depend on different aspects of the environment from the air to water and land. There are relationships between actions that we make and the environment‚ the most obvious one being pollution. The lasting influence we have on our surroundings may not be immediately apparent but future generations will have to live with
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PROJECT POLLUTION BY DANIEL ANDERSON 12G Contents How can pollution affect a country’s economy and cause disasters within a country and cause health risks 2 Economic effects of a country 2 Disasters of pollution 5 Health Hazards of Pollution 6 Negative impacts of pollution on health 6 Air Pollution 6 Water Pollution 6 Toxic Pollution 7 Noise Pollution 7 Prevention of Pollutions 7 How to create a healthy living environment 8 References 8 How can pollution affect a country’s
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The rate of pollution in our country is getting higher and has reached a dangerous level. Therefore‚ everyone must play a role in safeguarding the environment. Yet‚ before looking up for the ways to overcome this issue‚ we must find out the types of pollutions first. Firstly‚ one of them is air pollution. Nowadays‚ almost every family has at least a car at home. Although the car is convenient for our daily lives‚ the smoke emission from it is harmful to the environment too. The smoke
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Plant. The garbage emitting foul smell‚ the decaying plants and animals also cause air pollution. Hence the doctors advise the patients having lungs trouble to settle in some rural places because the air of villages is pure and free from population. Then comes sound pollution. The harsh sounds of buses‚ its‚ mopeds etc. affect our power of hearing and causes fart trouble. It has been reported that there are two villages named Biraspalli and Devadas Palli near Dum Dum airport m Calcutta where a
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Environmental pollution is the biggest menace to the human race on this planet today. The environment consists of earth‚ water‚ air‚ plants and animals. If we pollute the environment‚ the existence of man and nature will be hampered. Although most of people know that but they still destroy their own life. There a numerous kinds of environment pollution. However‚ I split it to 3 groups: water pollution‚ air pollution and soil pollution. Nowadays‚ the water of rivers and sea all over the worlds is
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Pollution Human beings have always caused some environmental pollution. Since prehistoric times‚ people have created waste. Like garbage today‚ this waste was either burned‚ tossed into waterways‚ buried‚ or dumped aboveground. However‚ the waste of early peoples was mostly food scraps and other substances that broke down easily by natural decay processes. Prehistoric populations were also much smaller and were spread out over large areas. As a result‚ pollution was less concentrated and caused
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