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Are (weather report) there living things on them too?

By bobo

 Ever since it was known that the planets were bodies more or less like the Earth, people have asked: “Are there living things on them too?” This is a hard question, but by pooling the resources of most of the sciences, we can make a pretty good answer.

First, let us consider life on our Earth for a bit. Our world would not be habitable if it did not have water on it. All living things are absolutely dependent on water. We digest our food, for example, only when it is dissolved in water in our stomachs. Moreover, this water must be liquidneither ice nor gaseous water vapor, but ordinary liquid water. Many Breitling Replica living thingssuch as the inner bark of treescan survive being frozen and thawed out again; but nothing grows while it is frozen. And no living thing can stand having the water boiled out of it. Hence the temperature .on a habitable planet must be above freezing part of the time, and below the boiling point all the time.

Light is necessary too. Practically all the food in the world is produced by green plants. These are the most marvelous laboratories in the world. Plants take in simple raw materials, carbon dioxide gas from the air and water with some things dissolved in it from the ground, and build up out of these, as they grow, all the complex substances of which they themselves are made, and some of which serve as food for animals. The plants get the energy required for this process from sunlight.

The waste product of the green-leaf laboratories is oxygen gas, which is turned back into the atmosphere. There is good reason to believe that the vast store of oxygen in the air has all been put in by plant life during the long course of geological time. Without plants, there would be no food for us animals to eat, nor oxygen-containing air for us to breathe.

There is, however, another geological process which takes oxygen out of the air. Most of the igneous rocks, which, like lava, have come up melted from below, contain a good deal of incompletely oxidized iron. As these rocks are “weathered”, that is, broken down and carried off by rain and streams, the iron in them combines with more oxygen, taken from the air, and the originally black or gray rocks give rise to red or yellow sand, mud or clay. If we inquire whether other planets are habitable, we must then try to find out whether their temperatures are suitable for life, whether they have water and atmospheres on them, and, if so, whether oxygen and carbon dioxide are present in these.

As for the composition of the atmosphere, certain gases, if present in them, absorb Cartier Roadster Replica light of particular wavelengths. We therefore study the planet’s light with a spectroscopean instrument which can tune out and separate different wave lengths of light many hundreds of times more powerfully than your radio can separate two stations of nearly the same wave length. And with this sensitive device we can find whether or not oxygen, carbon dioxide, and water vapor are present in any considerable quantity, and estimate their amounts.

Electrical heat-measuring device can be made so sensitive that, attached to a great telescope; they could measure the heat from a single candle 100 miles away. With such a device it is possible to get a pretty close estimate of the temperature of a plant’s visible surface.

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Scientific Careers: Volcanologists and Biochemists

By Randy Wheeler

 Connecting ones career with science can be seen as an important decision that requires students to devote their time and efforts for study and research. Curiosity about the natural world, educating people or other specific goals might all serve as an indication of an interest in a scientific career. Although a difficult journey, a scientific career might be a great opportunity for success, where the availability of options indicate that selecting a scientific path will eventually pay off for students. In that regard, it should be stated that a scientific career is not necessarily related to the term scientist. There are many occupations that students might choose in scientific careers. The present article will provide a brief overview of two occupations, a biochemist and a volcanologist.

Biochemists

Biochemistry as a discipline is concerned with researching and studying the composition of living organisms. Thus, a biochemist is a person whose main responsibilities include understanding and explaining chemical reactions and combinations occurring in various processes within living organisms. Examples of processes might include metabolism, growth, reproduction, etc. The tasks performed by biochemists are usually required in laboratory settings, namely in the pharmaceutical industry, where biochemists perform researchers.

Volcanologists

Volcanology, as the title implies, is a discipline concerned with studying volcanoes. A volcanologists, accordingly, is a scientist whose main responsibilities revolve around investigating active volcanoes, their eruptions, the products of eruptions, and others, in order to explain and predict their occurrences. The typical tasks of volcanologists include performing survey measurements, GPS surveys, plotting graphs, and drawing maps of volcanoes. Volcanologists mainly work at remote sites in government organizations, such as State geological surveys, State departments of conservation, the Department of Interior, and others. Additionally, it should be mentioned that the outlook for such career is generally positive with an expected growth of employment in such field.

Randy Wheeler is a professional researcher and writer in academic custom writing services. Upon graduation, he started a career in custom term paper service and has been providing custom writing help to students worldwide.

Find Out The Latest Details On Weather Forecasts Around The World

The Ever-Rising Demand For Software Engineers Never Seems to Subside

By Mark Stjean

 Software engineers are many and so are the demands for them in the corporate world. Many youngsters see this as a blooming and a rewarding career in the long run. Computers have become a part and parcel of our digitally inclined world and thus there is no looking back to this technology but only an exponential growth. A quintessential software engineer specializes in either computer software applications or computer software systems. Whatever, the case maybe the prospects of a high-paying career is always substantially high. Software engineers are meant to design, test, construct and maintain programs. The programs developed thus are of varied types and have widespread use in video games, business applications and operating systems.

Software jobs have been rated the top of the slot of all the high profile professions for a long time now. They efficiently beat biologists, historians and dental hygienists in the top-ten. Although the global economy has had a major setback in the recent past and is slowly recovering, this is one career that has not failed to gain constant impetus in the job scene. It is projected that by 2018 the number of jobs for software engineers is to grow 39% more than the current statistics. The growth rate is hugely progressive and so is the competition faced by people in this business.

For all those qualified individuals looking to make a fruitful career in this incredibly developing industry, jobs are based in top metropolitan. While just a degree is not sufficient to be able to land a productive career students are also advised to complete internships that would only increase their chances of gaining visibility amongst the hiring companies. The average earnings per annum for a computer systems software engineer is around $92,430 and that for computer applications software engineers is $85,430.

There is no dearth to job search engines on the web and this being the only medium of communication between the job candidates and employers other than campus job hiring, should well be manifested in serving these younger individuals to be guided through the right path. After gaining a substantial experience in a reputed organization you are sure to expect a constant ascend in your career chart. Try and locate the job sites that are associated with big names in this industry. Gain detailed information on training and salary aspects. You may also credit your academia with certification courses to add that extra credence in your resume. Excellent job prospects are awaiting your arrival, be wise enough to catch it at the right time from the right source. Aim for the sky and that is how you are expected to succeed in this competitive field of study.

The author of this article is a Software Engineer who has assisted many of them in finding the right jobs. The articles written by this author are great guides for the ones seeking to get into aspiring careers.

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Tuesday, July 27th, 2010 at 10:45 pm and is filed under science. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.