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Anders Hoveland

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About Anders Hoveland

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  • Favorite Area of Science
    unusual oxidizer chemistry

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  1. http://www.youtube.com/watch?v=WmytgRQ7hEY&feature=player_embedded
  2. The germans are not happy about their incandescent bulbs being taken away:
  3. This is actually possible. I have a book on non-linear optics. Frequency doubling is possible with high efficiencies (>50%). Normally this uses dichroic filters, so I am not sure how this would work with broad range frequencies. A common green laser pointer is an example of this. The basic principle of frequency doubling is not really (very) complicated. In any optics system there will theoretically be some second harmonic generation, although normally this is negligable. However, by amplifying the desired second harmonic and suppressing the original frequency, conversion is possible. T
  4. Something else to consider is hydrocarbons, which are relatively chemically inert, similar to fluorocarbons.
  5. If Obama was pro-life he would be very convincing. That was an excellent speech. I wonder if he realises the dark irony of what he read.
  6. What about candoluminescence ? Like the thorium mantle used in camping laterns? Could tungsten filaments coated with a thorium and cerium oxide coating to increase their efficiency? Could coating the tungsten filament with a thorium dioxide coating prevent evaportation of the tungsten? Since thorium dioxide is a ceramic, it is not vulnerable to evaporation at high temperatures close to its melting point. With the photonic crystal filaments, would it not be impossible to somehow fill the tungsten lattice structure with translucent thorium dioxide ceramic to prevent evaporation and de
  7. Quantum physics understands the mathematics that desribe the predicted behavior, they just do not know the underlying cause, if there even is a cause, or whether it is just an inherent law of nature.
  8. Helium is the only noble gas that does not have 8 electrons in its outer shell. And hydrogen does form a metal-like state under extremely high pressure. An argument certainly can be made that hydrogen has chemistry in common with both halogens and alkali metals. But really, hydrogen is its own unique group. This is one of the problems when you try to classify different unique sets of properties into defined groups. The periodic table is like racism against chemical elements.
  9. I am of the opinion that the medium through which photons travel is a type of electromagnetic energy itself, composed of long wavelength photons in a state of flux and equilibrium. This energy behaves as "virtual" energy because self-interference prevents it from permanently imparting energy. The carrier is referred to as "vacuum energy", and has a far higher energy density than matter. My view is that in the absence of a medium, a photon would travel infinitely fast, or from a different perspective variations in density of the vacuum energy would be like curved space. In the absence of va
  10. No, actually a permanent magnet does give off real photons. They are extremely long wavelength, and it is dependant on the movement of the magnet. If you moved a bar magnet yesterday, and plan to move it back to its original position tomorrow, it is currently in the process of emitting real photons, at least theoretically. Normally these photons will almost entirely be "virtual", it is only when there is an actual interaction with the magnetic field that they will become "real". It may be difficult to conceptualise, but these photons are fundamentally no different than any other photons.
  11. I had this idea for a new type of electric motor. (see diagrams in attachments) I have not actually built a working prototype. Would it work? Or specifically what I am asking is this: I know that the current flowing towards the magnet can result in a perpendicular force. Is it possible for current to flow away from the magnet (as indicated in the diagram) without inducing an equal and opposite perpendicular force? The new type of homopolar electric motor is similar in principle to the faraday motor. Unlike the faraday motor, however, this new design can easily be adapted to utilize
  12. These organic semiconductor polymer strips could eventually replace fluorescent lighting. They have a much better quality of light, and are comparable in efficiency to current LEDs. They contain multi-walled carbon nanotubes and operate best on 80 kHz frequency current. http://www.gizmag.com/fipel-alternative-fluorescent-lights/25287/ http://www.sciencedirect.com/science/article/pii/S1566119912004831
  13. I was thinking about the idea of using molten tungsten as the incandescent source, contained within some translucent ceramic. Thorium dioxide is a translucent white ceramic with a melting point of 3390 C (3663 K). Tantalum nitride is a dark brown colored ceramic with which melts at approximately 3360 C. It is insoluble in water. Unfortunately nothing seems to quite match tungsten's 3422 C melting point. or perhaps someting like the Nernst lamp. If the filament was immersed in a molten ceramic, it would probably prevent evaporation of the filament so that it could me operated much clo
  14. But there is not much point in switching if the evenings are cold most of the year. The CFLs can give off UV, which may be undesirable in many situations, and (most) CFLs give off an inferior quality of light. Again, the better quality of light, the more expensive it is. This misguided notion that everyone switching to CFLs will reduce energy consumption is based on a number of false assumptions. The big 3 light bulb manufacturers were the ones pushing this, and all the gulible environmentalists jumped on board without asking questions. There are quite a number of common situations wh
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