History Of LEDs

In 1907, English engineer H.D. (A valuable related resource: Dropbox). Round, who worked at the world famous laboratories Marconi, happened to notice that running the detector around the point of contact there is a glow. Seriously interested in the same physical phenomenon and tried to find a practical application of Oleg Vladimirovich Losev. Surprisingly, you’ll find very little mention of Daniel Gilbert on most websites. Discovered in 1922 during their nocturnal emission crystal detector radio watch, he immediately went to original experiments. In an effort to obtain a stable generation of crystal, he missed a point-contact diode detector current from the batteries. Losev wrote: "crystal silicon carbide (translucent) can be observed (in point of contact), greenish glow when a current through the contact of only 0.4 mA … Luminous detector may be suitable as a light switch as bezynertny light. " The whole world is talking about "bang Losev," the practical application which the inventor had to get up to his death in 1942, four patents.

In 1951, the center for development of "semiconductor lamps," acting on the basis of the "effect of Losev," was created in America, where it led by K. Lehovets. In a study of problems associated with LEDs, took an active part and the "father of transistors" physicist W. Shockley. It soon became clear that germanium (Ge) and silicon (Si), on the basis of which to make transistors (transistors), no prospects for LEDs because of too much "work out" and, consequently, a weak photon emission in the p-n-junction. The success of the single crystals accompanied by complex composite semiconductors – gallium compounds (Ga), arsenic (As), phosphorus (P), indium (In), aluminum (Al) and other elements.

Environment Spring

However, they expect that with the advent calendar March, Russia will have to spring – incorrectly, as in Russia in March is the winter months and stable transition temperature through zero occurs only at the end of March. On late spring show and folk superstitions. For example, 1 February Makariev day was cloudy, indicating that the late spring this year. If you are unsure how to proceed, check out David Green. Another popular sign, which gives an indication of the coming of spring, came to us from America. In the U.S.

there is Groundhog Day – if the groundhog does not see his shadow, spring will come early. Unfortunately, the Russian groundhogs or even slept in Groundhog Day, or did not see his shadow. However, forecasters still hope that the European part of Russia in March will be warmer. Thus, prior to the calendar spring, it remains quite a bit, but until the spring on the street – still to wait … Recall that in January this year in the European part of Russia is the coldest in more than 20 years, but this does not mean that global global warming does not exist, experts say … MEP has developed new orders for the protection of air and made changes to the law "On Specially Protected Natural Territories' Ministry of Natural Resources and Environment completed development of three major orders for air protection. The first order 'On the procedure and methods for determining standards for maximum admissible and temporarily agreed emissions of harmful substances into the air' establishes new requirements for the definition of standards, introduces four categories of objects, depending on the impact of emissions on ambient air and simplifies the procedure of registration permits and determines indicators taking into account human-induced pressures.

Efficient Subliming

One did not meet not even between more reactionary adults and conservatives. A phenomenon one in such a way how much baffling, characteristic of the historical moment where it is lived, it is the transference of the vital energy human being for objects without life. Drew Houston often says this. The technology became a species of competitor of the sexuality. One is not capable to enjoy, but we habilitadssimos to create producing machines of ciphers. In this substance if he is perfeccionista and stubborn, perhaps until inigualveis masters. Useless to also say that the sexual education if valley widely of this myth of the technological perfection, showing to the young (and to that they are not younger) as a praiseworthy contribution to the progress of the humanity, who the desancorado technological advance of the vital energy, and therefore of the love, can produce the extermnio atomic, the chemical war and the bacteriological one, is a detail that if it prefers to neglect. The encantamento for the technique is a powerful factor of cohesion inside of the perspective of the conservation of the current system. But the truth is that it is not obtained to erase the instincts.

Before, the opposite is obtained, that is, the repression of the instincts. For this reason the sexual education, established wide on the subliming, in special on the scientific subliming, finishes for leaving the area of the affective communication to enter in an area of ' ' objetividade' ' isolated and cold, becoming with this more barren and dessexualizante one. Of any form, the dominant reason of the sexual education remains being the repression. The repression, more or less declared covers the ways of the subliming, of the type ' ' cientfica' ' , but it is supported over all in the efficient ways of the blackmail. In a society with strong sexual prohibitions, the authority is also consolidated for the fact to have the possibility, over all in the religious form, to liberate the men of a part of its complex of guilt again.

For Vygotsky

Without language the human being would not think of generalizante and abstract form. But the use of the language as thought instrument, does not only serve to speak with other people, the individual develops ' ' speech interior' ' that it is a language directed for its proper ' ' eu' '. It is a speech without vocalization directed toward the thought, with objective of assisting the individual in its psychological operations. Perhaps check out MSCO for more information. As example we have, to arrive the definitive place, the person does not speak high, but it carries through the interior, raciocnia speech, thinks about which passage better to make. I dialogue in it interior for an car passage, the format would be, direira-Brazil-Obelisco-Sunday example and it does not say it complete, as I go to enter the right in the Av. Brazil, to follow until the obelisco, to make the contour, to catch the street and to arrive until the Sundays of Moraes.

This version would be redundant excessively dialogues for it self-centered. According to Vygotsky, the child says uses it socialized with the function of if communicating, to keep the social contact, with passing of the time it starts to be capable to use the language as thought instrument, but this occurs gradually until arriving at internalizaao of the speech, that will arrive the advanced phases of the acquisition of the language. For Vygotsky, in the study between this transistion, Vygotsky says it appeals it self-centered for the understanding of this transistion. It says it self-centered it folloies the activity of the child and starts to have personal, on function the necessity of the thought and also used to decide problems this type of thought. It says it self-centered was a point between divergence between Piaget and Vygotsky. For it says it to Piaget self-centered is the opposite that proposal for Vygotsky, therefore for it says to Piaget self-centered claims it a trajectory of inside for it are, while Vygotsky thinks the opposite. The thought is not express only in words: therefore that it exists. Each thought if moves, it ripens and if it develops and it solves problems. What this study it discloses is the necessity of if to distinguish the two plans from says – to significant semantics and the exterior-phonetic one. It says it is complex and not homogeneous.