it is dumbed down so as  Do you think that all encyclopedias are wrong in all country  Simple induction coils are not transformers as you think and that your shorter primitive simplistic definition sounds as a dumbed down definition  Do you know what the tranformer means It is a latin word Itself the meaning of the word exclude that devices without changingconverting the voltage are transformers    And a couple more texts are required if you study quantum theory related to those subjects Quantum theory started by a German Max Planck but nobody knew its real mathematical background therefore it remained just a semiscience until a Hungarian Jnos Neumann made it Lot of famous scientist of the era tried to made the mathematical background of the Qtheory but its proved to difficult for them Neumann redefinied the definitions he pointed out serials of former serious errors He made Q theory to a calculable science which made it a practicable science for industry He invented the famous game theory and designed the worldfamous ENIAC digital computer tooENIAC short for Electronic Numerical Integrator And Computer was the first generalpurpose electronic computer It was a Turingcomplete digital computer capable of being reprogrammed to solve a full range of computing problems ENIAC was designed to calculate artillery firing tables for the US Armys Ballistic Research Laboratory but its first use was in calculations for the hydrogen bomb When ENIAC was announced in  it was heralded in the press as a Giant Brain It boasted speeds one thousand times faster than electromechanical machines a leap in computing power that no single machine has since matched This mathematical power coupled with generalpurpose programmability excited scientists and industrialists Neumann was the main mathematican in Manhattan Project Other famous Hungarian was Jen Wigner often reffered as the father of quantum mechanics Other famous Hungarian Le Szilrd his invention changed the basis of nuclear science  he invented the nuclear chain reaction and invented the nuclear reactor and he invented with Wigner the first nuclear power station as well as the first Particle accelerator Therefore the nuclear physics became a practicableutilizable science for mankind As the inventor nuclear chain reaction he realised foremost the atomicbomb he made the basic Cutaway Drawing of the first atomic bomb He asked Albert Einstein to write letter to president Roosevelt for the realization of a concrete nuclear Bomb In Manhattan project dosens of scientist and hundreds of engineers worked for the realization of Szilrds idea a working atomic bomb from  An other Hungarian Ede Teller invented the Hbomb And it is just particle quantum  nuclear physics It is just a branch of physics  We had dosens of similar great scientists in other branchs of the physics and natural sciences The exaggeratedly anglocentric Rico have never heard about these scientists The expert historians of natural sciences are always shocked about great number of Hungarian scientists how is it possible for such a little country  What said the Italian Enrico Fermi about Hungarians the Marthians  httpwwwsetileagueorgaskdrhungaryhtm