Frank

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About Frank

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    Baryon
  1. Rainwater collection

    Musk wants to use his boring company TBM for sewers. Maybe rainwater/storm sewers could also work? Might be a way to retrofit where no separate storm sewers exist.
  2. Maybe look for visual programming for python? Seems there are a bunch of options there.
  3. OK. Not sure exactly what the node is representing - a group of files that were pre-selected (or chosen) by hand? So it would create a sort of meta-hierachy or graph for the filesystem?
  4. Looks like you already found it, so is this promotion?
  5. Giant solar collectors in space?

    One problem with hydrogen is it is cheaper to strip carbon from methane than to do water electrolysis! Not a problem (for profits) until there is a carbon tax. I just read that a nuclear plant in California isn't renewing their license, not because there is a push against nuclear there, but because they can't make money. Renewables are cheaper and there is a dip in demand between 9 and 5 which is bad for base-load power. They could produce hydrogen in the lull, but I guess it's not profitable either, or maybe within the lifetime of the plant, renewables will start producing the hydrogen more cheaply - who knows.
  6. Giant solar collectors in space?

    Built in a mining pit, collects water too. Not for deserts I guess. Solar power tower - Wikipedia: https://en.wikipedia.org/wiki/Solar_power_tower#Novel_applications
  7. Giant solar collectors in space?

    Sandstorms damage panels, no water to clean the panels, not close to where people live, generally. Seems like these problems can be overcome, but the $ is probably not there (yet).
  8. Giant solar collectors in space?

    One artificial moonlit test city, maybe - it's not a great idea. Solar panels in deserts can power the world. Some projects already exist.
  9. Giant solar collectors in space?

    This might interest you: China May Soon Have a Second (Artificial) Moon: https://www.space.com/42183-china-artificial-moon.html Downside: even from LEO, reflection is about 30 km wide (IIRC) because of Etendue - Wikipedia: https://en.wikipedia.org/wiki/Etendue which means to get 1:1 sunlight, the mirror would need to match that size! Also, rain and clouds means no light. There are also ideas about solar panels in space with energy beamed to earth using microwaves.
  10. Rainwater collection

    So "pumped"? Good point but a bit pedantic.
  11. Rainwater collection

    Fine if it rains. Need to keep the sides of the reservoir above sea waves, like by flotation. I was told Australian pools by the ocean sometimes get sharks in them. "Because in Australia, sometimes you have to pick a shark out of a pool" https://www.goodthingsguy.com/environment/australia-shark-pool/. So the sides might need to be high enough to keep out marine life. For the ocean rise part, it seems unlikely the mass of antarctic glaciers plus volume expansion caused by temperature increase would equal what is siphoned off and never returned to the ocean (somehow). That would be a lot of very large reservoirs.
  12. Quick Electric Machines

    Since planetary gears are used in turboprop engines and/or turbofan engines, I think yes. Also, I've noticed a sort of upper limit to existing permanent magnet motors of ~400 Hz or so, is there an induction resonance or high power electronic switching limit, or in other words, what limits the top frequency of electric motors?
  13. Am I in the right place...???

    Yeah, very close, maybe suggest a "painting" or "wet paint" filter to highlight subtle colour differences, might help to turn on the flashlight too.
  14. Am I in the right place...???

    Extrasensory colour perception - might be an app for that, one that exaggerates the colour differences it sees the same way an app can be used as a magnifying glass. Depends on the camera sensor's colour sensitivity. Filters might prove handy because of the limited colours actually perceived by camera sensors (red, green and blue), same as our eyes. When it comes to paint though, different light will interact with the paint reflection spectra(?) which may in fact include colour wavelengths we interpolate. This isn't as likely a problem in the given case where we want to discern between wet and dry or between new and old.
  15. Does anyone know how Wardenclyfffe Tower works?

    Not necessarily, if no practical application exists given the inroads made into other means or, if power is in the atmosphere, how do you charge(ha) people for use? Still not clear why it's "no". It seems to me what Tesla describes is similar to a fluorescent tube, or similar, where current flows through an ionized gas, not transmitted by electromagnetic energy (like wireless phones or toothbrushes).