Jump to content

StringJunky

Senior Members
  • Posts

    13434
  • Joined

  • Last visited

  • Days Won

    96

Everything posted by StringJunky

  1. Try googling 'chemistry lab set' or 'chemistry laboratory set'. Here's two from Best Science Supplies. I don''t know your country to find local ones. https://www.amazon.com/CHEMISTRY-LAB-SET-PROFESSIONAL-EQUIPMENT/dp/B000Z3N07M https://www.amazon.com/Best-Science-Supplies-CHE-395-Professional/dp/B00198BHPE/ref=lp_3018850011_1_13?srs=3018850011&ie=UTF8&qid=1511310098&sr=8-13
  2. If I can think of a way of simplifying it further, I will, but can't atm. Yes, wherever you stand there is a set of rays converging there that you can make an image from.
  3. But they more parallel i.e. relatively, with distance, not absolutely, Some of those rays that are so slightly converging from all over the disk to reach our eyes to a point close enough for our eyes to make an image with them. Which rays we pick up to make an image from the innumerable number of photons coming at us is determined by the points in space where our eyes are.
  4. And will be statutorily held for a minimum of two years, in Europe, by an ISP.and search providers, who have crawlers.
  5. Modify your profile and remove everything > Change your listed email address to a non-existent one > Get on with your life.
  6. No problem. You are only acting responsibly by asking questions about something something that could possibly have been hazardous.. We don't know until we ask.
  7. Most likely because they are not the right configuration and of sufficient complexity.
  8. Of course it is.There's no other real world option.
  9. The LC50 (lethal concentration that will kill 50%) for a rat is 47,702mg/m2 for 4 hours. I don't think you've got anything to worry about. http://www.sciencelab.com/msds.php?msdsId=9927133
  10. This is the trouble with emergence, it's not predictable. Even one or two scientific people here scoff at its apparent mystique, like it's some hand-wavy phenomenon.
  11. Do it to a copy of the original.
  12. That eliminates a corrupt Word then. It's the file. What file format is it in?
  13. Have you tried uninstalling/rebooting/reinstalling Word?
  14. At any given point on a reflective or illuminating surface, photons are travelling in all directions from it (where they aren't blocked) and one of those lines of photons will strike a point on your retina, as placed by your eye lens. Do that for the whole surface from all positions of the object you get an (inverted) image of that object on your retina. You don't receive parallel rays, you receive the converging ones from all points of that viewed object. if you ask "How can we see stars as we do?",all you are seeing is a white dot which is a single rod being fired on your retina... it has no spatial dimensional value other than your eye is detecting a single line of photons from that star.
  15. Ignoring the fact that said billionaires have offshore tax evasion avoidance advisers and not paying what they do owe. There are trillions of taxable American dollars hidden from the IRS.
  16. Intensity wouldn't diminish with distance otherwise.
  17. For the purposes of the discussion, the sun is smaller than the Earth because the observers and the area of interest are in the vicinity of Earth.
  18. Yes. Not actually smaller but effectively.
  19. Before. They'll be doing both once in the atmosphere.
  20. You need the atmosphere to selectively absorb the wavelengths to get a colour, otherwise it will just be white.
  21. I think he's hanging onto some erroneous fact which is hindering his understanding. Where does the blue come from? Think of an atmosphere as like a sheet of, translucent plastic throwing rays in all directions as they pass through.There will be a mix of diverging and converging rays.
  22. It's rather a long way away, so, it's effectively pretty small relative to the Earth; most of the incident rays are diverging just before they enter its atmosphere. Edited: added..
  23. Yes, that's as I understand it. it's happening everywhere but only affects where the distance is great enough and gravity is low enough. Thanks.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.