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The DIN system, officially DIN standard 4512 by Deutsches Institut fur Normung (but still named Deutscher Normenausschu (DNA) at this time), was published in January 1934. It grew out of drafts for a standardized method of sensitometry put forward by Deutscher Normenausschu fur Phototechnik as proposed by the committee for sensitometry of the Deutsche Gesellschaft fur photographische Forschung since 1930 and presented by Robert Luther (de) (18681945) and Emanuel Goldberg (18811970) at the influential VIII. International Congress of Photography (German: Internationaler Kongre fur wissenschaftliche und angewandte Photographie) held in Dresden from August 3 to 8, 1931.
Who created the DIN system?
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The answer: Deutsches Institut fur Normung

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Post-punk is a heterogeneous type of rock music that emerged in the wake of the punk movement of the 1970s. Drawing inspiration from elements of punk rock while departing from its musical conventions and wider cultural affiliations, post-punk music was marked by varied, experimentalist sensibilities and its "conceptual assault" on rock tradition. Artists embraced electronic music, black dance styles and the avant-garde, as well as novel recording technology and production techniques. The movement also saw the frequent intersection of music with art and politics, as artists liberally drew on sources such as critical theory, cinema, performance art and modernist literature. Accompanying these musical developments were subcultures that produced visual art, multimedia performances, independent record labels and fanzines in conjunction with the music.
When did post-punk arrive on the scene?
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The answer: in the wake of the punk movement of the 1970s

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The junction forward voltage is the voltage applied to the emitterbase junction of a BJT in order to make the base conduct a specified current. The current increases exponentially as the junction forward voltage is increased. The values given in the table are typical for a current of 1 mA (the same values apply to semiconductor diodes). The lower the junction forward voltage the better, as this means that less power is required to "drive" the transistor. The junction forward voltage for a given current decreases with increase in temperature. For a typical silicon junction the change is 2.1 mV/C. In some circuits special compensating elements (sensistors) must be used to compensate for such changes.
When happens to the junction forward voltage when temperature is raised?
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The answer: decreases

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In a famous paper of 1936 with Garrett Birkhoff, the first work ever to introduce quantum logics, von Neumann and Birkhoff first proved that quantum mechanics requires a propositional calculus substantially different from all classical logics and rigorously isolated a new algebraic structure for quantum logics. The concept of creating a propositional calculus for quantum logic was first outlined in a short section in von Neumann's 1932 work, but in 1936, the need for the new propositional calculus was demonstrated through several proofs. For example, photons cannot pass through two successive filters that are polarized perpendicularly (e.g., one horizontally and the other vertically), and therefore, a fortiori, it cannot pass if a third filter polarized diagonally is added to the other two, either before or after them in the succession, but if the third filter is added in between the other two, the photons will, indeed, pass through. This experimental fact is translatable into logic as the non-commutativity of conjunction . It was also demonstrated that the laws of distribution of classical logic, and , are not valid for quantum theory.
What is the difference of logic in quantum theory?
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The answer:
laws of distribution of classical logic, and , are not valid for quantum theory