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Mars Northman

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Everything posted by Mars Northman

  1. ...Is there a question?
  2. Well, engine block and other temperatures (fuel temp for one) are the most important factors. Fuels like gasoline tend not to atomize as well at lower temperatures, instead forming droplets that can stick to surfaces instead of float around in the combustion chamber. Adding more fuel ensures that at least some properly atomized fuel fills the chamber up enough for the sparkplug to DEFINITELY ignite it (which then ignites any droplets as well, this is the cause of many types of sputtering when cold starting an engine) Naturally aspirated (Otto) engines are usually designed to operate on a 13:1 mixture of air/fuel (for gasoline) mostly because achieving complete combustion requires around 13 units of air (by weight) per unit of fuel (again, assuming a gasoline Otto type engine). Air temperature being lower is beneficial to internal combustion engines, technically. This is because, compared to warmer air, there are more oxygen atoms contained inside a given volume of (colder) air. On a naturally aspirated engine this effect is not really noticeable without special measuring equipment, however on supercharged engines (where the intake air is usually heated up quite a bit by the supercharger) this can make a dramatic difference. This is the reason intercoolers exist. Height above sea level does the same thing since it also affects the number of oxygen atoms for a given volume of air. A group B rally car running Pikes Peak (google it) would actually lose almost a tenth of its power output (for group B this could equal 100hp!) at the top compared to the start. Scientia es potentia.
  3. Actually, since he stated it STORES energy the relevant unit is not current (flow) but capacitance. And yes it appears to be a bimetallic coupling as previously stated. Forming a galvanic cell would require having some type of coating between the metals would it not? Not judging but this does not look "engineered" enough for this to be the case, especially since thread starter invented it (definitely not a novel invention though). Love threads like these, keep experimenting (and reading on your own) and asking 'stupid' questions about them. If I may offer a suggestion for future inventions; Document document document, details of construction operation etc. Think of it as an engineer AND a scientist would, the engineer keeps drawings specs etc of everything and the scientist formulates and conducts detailed measurements of the results. The goal of both endeavours should be SIMPLE repeatability, anyone who has access to your materials on an invention should be easily able to build their own copy and perform the same measurements (hopefully with exciting results). Scientia es potentia.
  4. I'm assuming you mean vary conductor length (for an analog circuit? RF?) WITHOUT impacting the amount of added resistance per unit of distance? Does it have to be the exact same conductor or is it enough for the point of origin/destination to be the same? If not then perhaps look into rotary selector switches, I believe these can be made to effectively vary conductor length (for the part of the circuitry they connect to/from) if designed/chosen properly. Please correct me if I'm wrong. Scientia es potentia.
  5. As previously mentioned, SDR (software defined radio) for the appropriate band(s). Aluminium foil does not count as a device. Neither does a microwave oven door, technically its a part of the oven. If you want a name for something that completely blocks electromagnetic radiation the term is FARADAY CAGE, after its inventor Michael Faraday whose surname also gave name to the unit for electrical capacitance (the Farad). ...And yes, TECHNICALLY the microwave oven door, when closed, completes a faraday cage to capture any errant microwaves (along with the rest of the chassis of course). Scientia es potentia.
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