Climate Change - The Coming Crisis

While many contend that there are different reasons behind the changing of our climate, few can deny that our planet is going through a period of immense changes. While some may discredit the science, global warming is one of the main hypothesis for why our planet is heating up. In this article, we'll try to explain some of the science behind global warming so that you can understand the problem more clearly.

According to numerous scientific studies, our planet\'s surface temperature has increased by about 1 degree Fahrenheit within the last century. Most of this change has occurred in the past two decades, prompting the question: are our lifestyles accelerating this global change? The evidence definitely seems to point in that direction.

Many scientists point to the emission of greenhouse gases as one of the leading reasons that we are undergoing this global change. Carbon dioxide, methane, and nitrous oxide are some of the main compounds that we are releasing more and more, causing something known as the 'Greenhouse Effect'. This occurs due to the fact that these gases tend to trap heat, and when they are released into our upper atmosphere, they trap some of the heat energy that would normally be reflected by our earth's natural processes.

It's an undisputed fact that there is more greenhouse gas in our atmosphere due to humanity. Since the beginning of the industrial revolution, it is estimated that the amount of carbon dioxide in the atmosphere has increased by as much as thirty percent. While a little greenhouse gas helps to keep our planet warm, the more and more that we release, the hotter the planet is going to get. That is an important fact to consider, being that our biosphere is finely tuned to live at the temperatures at which our planet currently operates. Many forms of both plant and animal life run the risk of extinction should the temperature change be accelerated. Fossil fuels are primarily responsible for the amount of greenhouse gases that we are releasing, and to help fix the problem, we are going to need to find an alternate source of energy, and quick. Research into alternative fuels has yielded several possible options, including the use of corn in the production of ethanol, which has already had proven usage in places such as Venezuela. The most accelerated period of temperature change has occurred in the past twenty years, and it's clearly evident that we need to address this problem while we still can.

Source- http://www.ezine-articles.org/ezinearticles/science/climate-change-the-coming-crisis.html 

What Are Flow Meters?

Basically speaking, flow meters are devices which are used to measure the velocity of a gas or liquid in the given passage. There are many, many types of flow meters, each having their own specific use. Their application too is very diverse, as you will find the use of flow meters in aeronautics, meteorology, engineering and so on.

What Do The Flow Meters Actually Do?

Well, as mentioned above, the flow meters measure how much gas or liquid has passed through a device by the help of the velocity of the gas/liquid. The flow meters measure the mass and not the volume. The accuracy of the reading and overall results will depend upon the purity of the liquid or gas, as well as whether the flow meters and its parts were clean and free of any obstacles.

There are a great variety of these devices and each one of them has typical applications. Some are used to measure air, some are used to measure fuel, and some are used to measure oil and so on. For each type of liquid and or gas, the specification, the use and the application of the device will differ.

Thankfully, the variety and the science that backs the concept gives very accurate answers which helps in a number of automotive and mechanical applications. It is lovely how far science has progressed and developed this simple device of flow meter which as a matter of fact, was used even in the Roman Empire.

This fact shows first of all, that man's interests have not changed too much in the last so many decades that passed; it also shows that the ancient civilizations were much more knowledgeable than we give them credit for. The fact that the concept of the flow meters was found applied so much far in the past, forces the modern man to reconsider their knowledge and beliefs about the ancient civilizations and their understanding of science and how it can be applied for the promotion of a better and more comfortable life.

There are a great deal of developments in the field of the flow meters today, as their applications too have been diversified according to the development of technology and advancement of science. However, the basic fact remains that the concept is as old as the Romans, and may be even before that. This is something that gives the modern man a wake-up call regarding the science of the ancient civilization, which we have so far, ignored as superstitions and pagan rites and beliefs.

This article is taken from- http://www.ezine-articles.org/ezinearticles/science/what-are-flow-meters.html