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Infrared Radiation Physics

Infrared heaters (emitters), although there are in the market for quite a long time, but not everyone knows and understands the principle of their actions. What is it – infrared radiation? Where else can use it? Infrared radiation: a little history. Discovered infrared radiation in 1800 by Englishman William Herschel. He found that in the resulting spectrum with a prism beam of the sun, are abroad in red, the temperature becomes higher. Further evidence emerged that this is already visible, the field of radiation has the same origin as that of light. In another century, scientists have been received radio waves, which were in the infrared range wavelengths. This is a reasonable assurance of the same nature of radio waves, infrared rays and light. All this – just different kinds of electromagnetic waves.

Without them we would not be able to watch TV, talk on a cell phone listen to the radio. It should be noted that any body, liquid or solid when it is heated to a specific temperature, it begins to radiate in the infrared spectrum. The higher it is, the higher the intensity and the wavelength shorter. If the temperature does not exceed 300 degrees Celsius, the body looks dark, but if you raise the temperature of the body-emitter, it will be dark red, then red, then yellow, and if the temperature is already very high, the body seems white. Incidentally, all warm-blooded animals 'light' in the infrared. This knowledge will be useful if you decide to buy an infrared heater.


January 25, 2019 at 11:02 pm Comments (0)

Stability

Adequate definition of the objective reality of some of the concepts time – the duration of the changes originating from the image of the universe elements. If the duration of time, it was abstract, flowing parallel to the changes, the process of measuring the time would be absolutely objective process – the time would be reflected in this totally objective and ideal "range." But such a line in nature suschestvuet.V nature, there are a variety of processes from which the people as a measure of time choosing a particular process. This measuring time should have a stable unit of measurement (the process must be stable.) Stability of selected units is determined by comparison with particles of other processes. Therefore, measurement time of some change is a process of comparing the selected units with particles of other processes. That is, the notion of "time" reflects the totality of the studied processes, which is the reason improving our measuring time, the cause of our movement from hours to hours of sunshine atomnym.V this situation, the invention of modern physics concepts of "proper time of an object" is, firstly, the invention 'Ruler' which measures the proper length, and able to commit its changes, that is a subjective reflection of reality, which is not adequately samoyrealnosti. And secondly, this invention yavlyaetsyav cunning, which gives opportunity to avoid the necessity of a physical explanation of slow down or speed up certain processes under specific conditions. Because of the infinite universe and an infinite number of its constituent elements, we do not have the right to assume that the shape of the universe can ever be the same as it once already was. .

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August 21, 2017 at 3:41 am Comments (0)

Practical Autonomy

Practical while subordinated an institution (school), that it has proper culture, with definite purposes. Being a curricular component with a reflexiva action, that involves practical and theory as aspects indissociveis, being able to be articulador of the knowledge constructed during the course. ' ' In this vision, pedagogical making, that is, ' ' what to teach and as ensinar' ' , it must be entailed to ' ' for who and so that ' ' , thus declaring a reciprocity between the developed contents and the instruments of currculo.' ' (PEPPER, 2006 P. 67). Under this aspect, the supervised period of training becomes excellent for being the chance of the learning, to adentrar in the pertaining to school field, to collate themselves with the concrete, perceiving it as practical theoretical basement/, at the same time to reflect concerning the reality. It is a component for which the citizens must be capable to contextualizar, to plan and to manage its pedagogical action. In Pedagogia of the Autonomy, express Freire its thought on the question of the searching professor, in its to understand, what it has of researcher in the professor is not a quality or a form of being or acting that if it adds to the one to teach. It is part of the nature of the practical professor the investigation, the search, the research.

Study in felt to inquire and to search to evidence itself, therefore, evidencing, if it intervines intervined if it educates. It is necessary to search to know what not yet it is known and of this form to communicate the newness. ' ' It does not have research without education, nor education without pesquisa.' ' (FREIRE 2002 P. 14) the elaboration of disciplines was mediated by the necessity of the contact of the practical pupil with the pedagogical one, aiming at to the formation of professors dynamic, critical, searching, independent, creative, with proper initiative, capable to question the situations and to find ways to surpass the challenges and with promising actions and performances in the society.


June 12, 2017 at 3:28 am Comments (0)

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