quantum mechanics

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59 documents for quantum mechanics
  • In the 1970s, however, [Stephen Hawking], a physicist at Cambridge University, used quantum mechanics to predict that black holes are not, in fact, completely black. Heisenberg's uncertainty principle, one of the central tenets of quantum mechanics, maintains that you cannot pin down all the physical properties of a particle at the same time. Among other curiosities, this leads to the startling idea (which has been proved experimentally) that a vacuum is not empty space. Instead, it is filled with pairs of "virtual" particles and their anti-particles, which pop into existence for a fraction of a second before recombining with one another and disappearing again. Near a black hole's event horizon things can go wrong. A virtual particle or anti-particle may be captured by the black hole's ...

  • ...in the 1920s with their work on quantum mechanics and the uncertainty principle. . The pla...

  • [Werner Heisenberg] was the pioneer of quantum mechanics; Einstein was a critic of the new physics; and [Niels Bohr] played an intermediary role, trying to reconcile the classical and the new. Sentences like the following are commonplace: "When a quantum of radiation hits an electron, it bounces off with less energy. But Planck's rule says that the energy per quantum is proportional to the radiation's frequency, so reduced energy means lower frequency or longer wavelength. To Einstein, the new physics formulated by Heisenberg and Bohr was not the final word; its ascendancy would be transitory. A new theory, based on classical principles, would, [Albert Einstein] believed, eventually replace quantum mechanics.

  • His approach is to examine the universe in "powers of 10" to highlight major discoveries in different scales of space and time. In doing so, he draws his audience out of their everyday world and into the realms of the ancient past, the very large, and the very small. [Christopher Potter] uses colourful, if convoluted, analogies to relate difficult concepts. When describing the new perception of the world that physicists have due to their knowledge of quantum mechanics, he says "a world that appeared to be sinuous reveals itself, when looked at closely, to be grainy, in the same way as our technological world which was once smoothly analog is now pixilated and digital. In places his scientific accuracy is less than perfect. For example, he defines the speed of light -- an exact physical...

  • The justification? Because the gospels were primarily concerned, as we must be, to show that Jesus was a "particularity" (grab a passing scientist to find out what that means), not just an outstanding man of his time. Dump both genealogies. Because the wise men brought three gifts, and because Ps 72:10 speaks about three kings presenting gifts to the messiah, the wise men and the kings have become interchangeable.

    ...(Quantum mechanics does not allow the notion that God stage...

  • [...] debate is useful, provided one views the topic as a Malayan jungle clearing -- an area being constantly choked by the creeping undergrowth of quotations out of context and unfounded assertions, needing constant attention to keep it clear of illogical trains of thought and the comparing of apples with oranges -- in particular, setting rationalism (modern science) against superstition (out of date religion). Blair's defence must also be discounted, factual though it was: "Almost half the health care in Africa is delivered by faith-based organizations ... one-quarter of worldwide HIV/AIDS care provided by Catholic organizations ... fantastic work of Muslims and Jewish relief organizations ... in Canada, thousands of religious organizations care for the mentally ill, disabled, disadv...

    ...) who are as perfectly at ease with quantum mechanics as they are with biblical theology. Yet ...

  • The second article was a podcast of the CBC Radio One program "Ideas" from January 7, 2007. Entitled "The Strangeness of Science," the podcast featured a lecture by evolutionary biologist Richard Dawkins of Oxford University,2 in which Dawkins posits that our perception potentially limits the types of scientific research we undertake.

    ...Quantum mechanics is an even more fantastic theory that st...

  • ... mind-body interaction based upon standard quantum mechanics. Harris notes that I show how all of the...

  • So, the name of the game is follow-up," Cardinal said. "And it's going to be approaching its perihelion, which is its closest point to the sun, in mid-June. So that's when it will be brightest. People will be able to see it with binoculars and small backyard telescopes. "All the other astronomy is galactic stuff, where you're looking at black holes and stars and you're looking at other galaxies. Where you're looking so far away that it's never going to matter to anybody, whatever you find out," Cardinal said. "I'm really, really excited to take this forward and maybe, hopefully be able to inspire some of the kids to stay in school a bit longer. They don't have to do science. I just want them to reach a little bit further and to see that they can do anything. Even if they don't know wh...

    ...I liked to read about black holes and quantum mechanics and all kinds of stuff. So I was interes...

  • An ethnographic study explored how 41 grade 11 students enrolled in biology, chemistry, physics and psychology classes completed a modified scientific literature review (SLR). Researchers questioned whether the use of primary readings from peer-review science journals promoted increased student learning, the ability to handle scientific information, the stimulation of critical thinking skills, development of a deeper understanding of a scientific topic, and the preparation for collegiate research. Data were collected in four phases: Preliminary interviews; debriefing interviews after completion of the SLRs; content analysis of student work; and face-to-face interviews two years after the SLR unit with self-selected participants from the original sample. Findings indicate that students w...

    ..., abilities of birds, obesity, narcolepsy, quantum mechanics, cell phone dangers, quantum mechanics, ...



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