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September | 2017 | MS Physics

MS Physics

Enjoy Physics

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Best Air

Convective heat transfer associated with the transfer of heat with the air (warm up – warm down). In this case, along the inner (warm) glass air rises, and its place is cold, descend the path along the outer (cold) glass. Thus is formed between the panes of air circulation, which successfully carries heat out and cold inside. It is this kind of heat transfer yields the greatest heat loss. In order to cycle there was no distance between the glasses do little. It remains to radiation and thermal conductivity of air, as he is known to be an excellent thermal insulator.

Thus the distance between the glass has a certain optimum (10-16 mm), and its further increase does not improve the thermal characteristics of glass. So do not usually make double-glazed windows with 4mm glass with a total thickness greater than 44 mm for two-chamber and more than 24 mm for the single-chamber. In our experience, the best to Kiev on price-quality relationship is a double-glass (3 glasses). To obtain even higher heat-common properties glass is replaced by the K-glass (hard cover), which can reflect part of the thermal radiation back into the house, or I-glass (soft cover) 6. The best windows – to the completion of argonom.Zdes there are two significant points.

Firstly, in terms of classical physics, the thermal conductivity of ideal gas depends only on their pressure, and more on anything. Ie, that the air that argon – all the same. The difference between the characteristics of real gases and ideal gas is known to few protsenty.Naprimer for the same glass 4-16-4, one of which is filled with argon, and the second air, the difference between the reduced heat transfer resistance is 6%. Because of them, in our opinion, not worth fuss with expensive equipment, tanks, by itself is not cheap enough argon, etc.

September 5, 2017 at 1:18 pm Comments (0)

Quios School

Contrary case one of them would eliminate all the others. Therefore, the primordial principle of the universe is neutral. The last milesiano thinker was Anaximenes, disciple of Anaxmandro, having blossomed in century VI B.C. For this, the universe (physis) is resulted of transformations of an infinite air (pneuma peiron). Of its book in &#039 chats; ' On the Natureza' ' , in them some fragmentos had arrived, beyond making use of indirect certifications. For this philosopher, everything is formed by air: the soul is air, the fire, rarefied air; of thick air the water results. In case that air if still becomes thicker, land or rock is changedded into. This theory has the great advantage to establish enters the diverse materials only one graduation in the concentration of the primordial element, air.

Anaximenes introduced with this thought a concept that would go to influence the future philosophies: he identifies the last constitution of the physis and identifies the process capable to create the multiplicity of all the things that they form universe. The new jnica school the new jnica school dedicated to reevaluate it the thought of its predecessors, basically developing its ideas taking for base the thought of Anaximenes. Amongst the philosophers of the new jnica school, whose references had arrived we, we have: – Ideo de Himera was born and lived in century V B.C., being almost contemporary of Scrates. Its ideas still deal with the subject of air, as primordial element of the physis. – Cleidemo, disciple of Anaximenes, developed research in the field of meteorology and the physics. On the other hand, Cleidemo developed a series of relative hypotheses to the directions, using the air concept as main element: the palate is resultant of air; the olfato and the hearing alone exist I smell because it and the sound is carried by air. – Enpides de Quios, that lived in century V B.C.

September 2, 2017 at 8:18 am Comments (0)

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