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Showing content with the highest reputation on 04/27/21 in all areas

  1. Hmm. Who has been funding exploration to this point? Individuals? Or governments from the US, the EU, China, Japan, India, etc.? Or are you suggesting that private enterprise is not now getting involved? Like SpaceX, Orbital, Boeing, Blue Origin, etc.? Perhaps you are unaware of people looking for adventure. Space Adventures sent seven private citizens to the ISS. NASA has announced plans to send private citizens to the ISS. Mars One has signed up 2700 people who have asked to be part of a one-way mission to Mars. I am unsure exactly what history you are looking at.
    2 points
  2. Some manufacturers like Tesla already include provisions for taking back batteries for recycling/disposal in the purchase price. It is a serious consideration but I don't think it is being neglected. I fully expect more and better recycling and safe disposal Also I think we need some perspective - projections for battery waste for Australia indicate a rise to above 100,000 metric tons per year by 2050. Not sure what global projections are. It is also projected that by then most of that waste will be recycled. I am inclined to think that the quantities of battery waste is an underestimate,
    1 point
  3. Excellent. I'm sorry my post was so stuffy and 'theoretical'. The rest is much more practical. Now I mentioned 'circuit elements' These are ideal black boxes - ideal in that they 'do what you want but you don't have to know how or why'. The element or box has one, two, three or four or sometimes many 'terminals' with which it interacts with the rest of the circuit elements via the nodes. One terminal is special - I only know of one example we call ground or earth. Two terminals are simple so let us take one of those. Say we connect one terminal to nod
    1 point
  4. Sounds like a job for a 100 megaton nuke.
    1 point
  5. I am rather fond of Sabine, she cuts through the gobbledygook and makes her field understandable. As a bonus she sings, often about science.
    1 point
  6. First I have heard of Sabine...I love the rather "thick" pronunciation of Einstein. Interesting video.
    1 point
  7. That is essentially correct. However, making the case for cannonballs is not very productive. The fact remains that missiles/impactors ( or whatever you wish to call them ), have to have some sort of guidance. It is not easy to hit something 1-2000 km away, much less explode at height, and re-enter with multiple MIRVs. The one clear advantage defensive missiles have, is that they know exactly where the incoming missile is going to be ( or hoping to be ), and an intercept course is much easier to solve for. Think of it like bsaeballs. It is very difficult to hit an outfielder wi
    1 point
  8. If Watson isn't the most famous doctor ever, then Who is. ------------------------- Meanwhile in Salzburg...
    1 point
  9. A woman was at her hairdresser’s getting her hair styled for a trip to Rome with her husband.. She mentioned the trip to the hairdresser, who responded: ” Rome? Why would anyone want to go there? It’s crowded and dirty.. You’re crazy to go to Rome .. So, how are you getting there?” “We’re taking BA,” was the reply. “We got a great rate!” “BA?” exclaimed the hairdresser.. ” That’s a terrible airline. Their planes are old, their flight attendants are ugly, and they’re always late. So, where are you staying in Rome ?” “We’ll be at this exclusive little place over on Rome
    1 point
  10. Glad it helped. By the way I see I made a typo in the formula for silica, which should be SiO2, not SiO4. (Although the units are SiO4 tetrahedra, by the time they share all their "O" vertices with neighbouring ones, the overall ratio of O:Si becomes 2:1.)
    1 point
  11. A man boarded an airplane and took his seat. As he settled in, he glanced Up and saw the most beautiful woman boarding the plane. He soon realized She was heading straight towards his seat. As fate would have it, she took The seat right beside his. Eager to strike up a conversation he blurted out, “Business trip or pleasure?” She turned, smiled and said, “Business. I’m going to the Annual Nymphomaniacs of America Convention in Boston." He swallowed hard. Here was the most gorgeous woman he had ever seen Sitting next to him, and she was going to a meeting of nymphomaniacs! Strugglin
    1 point
  12. To me, mass is volume, so one liter would be one liter. I am aware in "physics," "physicists" use mass as it best confuses an embarrassing subject they do not wish to discuss, in my opinion. Physicists check a substance's specific gravity, subsequently giving the substance in question known kinetic energy to get it moving and known kinetic energy to bring it to a stop. Whether or not it is hotter or colder (more or less dense) than the substance known at sea level on earth at room temperature, which is contradictory to the original base definition of mass (a volume of some substance). It
    -1 points
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