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L. Marcus

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  1. Like
    L. Marcus got a reaction from Cancer in Longest Running Thread EVER   
    The first rule of the Tautology Club is the first rule of the Tautology Club. 
  2. Haha
    L. Marcus got a reaction from Pariah in The Last Word   
    Two bodies are problem enough for some.
  3. Like
    L. Marcus got a reaction from Pariah in Longest Running Thread EVER   
    The first rule of the Tautology Club is the first rule of the Tautology Club. 
  4. Like
    L. Marcus got a reaction from Old Man in Longest Running Thread EVER   
    The first rule of the Tautology Club is the first rule of the Tautology Club. 
  5. Like
    L. Marcus reacted to Old Man in Longest Running Thread EVER   
    I'm not sure what's worse: knowing that Cancer has a little landing strip, or knowing that L. Marcus is turned on by it.
  6. Like
    L. Marcus reacted to Pariah in The Last Word   
    Remember, the only thing Flat Earthers have to fear is sphere itself.
  7. Like
    L. Marcus reacted to Old Man in It's time for Christmas.....   
  8. Like
    L. Marcus got a reaction from Pariah in 2017 Word Association Game   
    Toto
  9. Like
    L. Marcus got a reaction from Pariah in The Last Word   
    Diligence should be awarded.
  10. Like
    L. Marcus reacted to Ragitsu in 2017 Word Association Game   
    Fundament
     
    "
    1. the foundation or basis of something. 2. humorous a person's buttocks. "
    Hmmmmm....
  11. Like
    L. Marcus got a reaction from lemming in Political Discussion Thread (With Rules)   
    That would explain your height.
  12. Haha
    L. Marcus got a reaction from Hermit in Order of the Stick   
    Dancing in meadows is highly overrated. Too much thistles, too many hedgehogs. 
  13. Like
    L. Marcus got a reaction from tkdguy in Order of the Stick   
    Dancing in meadows is highly overrated. Too much thistles, too many hedgehogs. 
  14. Like
    L. Marcus got a reaction from Pariah in Complicate the Person Above   
    Pariah loves to re-enact Boot To The Head every last school day before Christmas with his unsuspecting students. 
  15. Like
    L. Marcus got a reaction from Pariah in The Last Word   
    Being alive is inherently dangerous. Just see it as a heads-up.
  16. Like
    L. Marcus reacted to Cancer in More space news!   
    [url=https://www.nature.com/articles/nature25020]More on that interstellar visitor[/url] (could well be behind a subscriber wall)
     
    From the abstract:
     
    EDIT (after I've had time to read the paper): From the text:


     
    Its 7.36 hour rotation period, for an object 800 m long, means that the object cannot be a "rubble pile", i.e., a mass of clumped-up small pieces; it takes some mechanical strength to hold itself together and in that shape with that rotation.  That mechanical strength is well within known substances (utterly nothing special needed), but many of Solar System asteroids seem to be collections of broken-up bits, and such a collection cannot hold that shape with that rotation.
     
    Its incoming trajectory (i.e., the velocity at infinite distance, what it had before it was accelerated by the Sun's gravity) was remarkably close to that of the average space velocity of the stars around us in their orbits around the Galaxy; the magnitude of that velocity is about 26 km/s.  While that is faster than anything macroscopic that humans have ever made, at that speed it's about 600,000 years travel time to (or from ) Vega.  The orbit is beyond all doubt hyperbolic and the object is interstellar: the orbit eccentricity is 1.1929 +/- 0.0006 (zero is a circle, between zero and 1 is an ellipse, 1 is a parabola, and greater than 1 is a hyperbola).  We have seen comets with arguably parabolic or borderline hyperbolic orbits before, but those seem to be due to things on near-parabolic orbits getting extra boost on their inward leg from the gravity of jovian planets.  This is the first no-doubt-about-it interstellar visitor.
     
    And right now, it's moving away from Earth at about 65 km/s.  No, we're not gonna catch up to them.
  17. Like
    L. Marcus reacted to death tribble in In other news...   
    Remember Boaty McBoatface ? Well the British public has done it again.
    http://www.bbc.co.uk/news/uk-england-south-yorkshire-42026485
  18. Like
    L. Marcus got a reaction from Pattern Ghost in Thor: Ragnarok spoiler thread   
    Taika Waititi needs to make more films.
  19. Like
    L. Marcus got a reaction from Barwickian in Real Locations that should be fantasy   
    Next time I'm that way, I've gotta take pictures of Old Town -- the Church Town of Piteå. The cottages aren't that old -- thanks to the Russians having their fun around 1814 -- but the style of buildings is thoroughly vernacular. And the bell tower of the church probably started out as a kastal, a defensive tower from the 14th century or thereabouts -- records are sketchy. 
  20. Thanks
    L. Marcus got a reaction from tkdguy in Musings on Random Musings   
    Needs more beard!
  21. Like
    L. Marcus got a reaction from Pariah in Musings on Random Musings   
    Not if it's done with panache.
  22. Like
    L. Marcus reacted to Sociotard in Political Discussion Thread (With Rules)   
    Please delete the portion of your post referring to her having posed in skin-mags, unless you can give a very good explanation why women who do pursue that work need less respect or bodily autonomy than other people.  Even if she were a full-fledged prostitute, posing with hands on breasts while she was asleep is wrong, and no less wrong than doing it to a nun.
     
    I also don't think the Trump support matters. I can accept contrary points of view, though, and respect someone who thinks the accusation was at least partially politically motivated. Still, I think clearly non-consensual grope-pose photos are egregious enough that no political motivation is necessary.
  23. Like
    L. Marcus reacted to Ternaugh in Political Discussion Thread (With Rules)   
    Dude, there's a picture of Franken behaving badly with her, and he apparently has a history of making "jokes" that are not appropriate.
     
    It doesn't matter who she supports, or where she's chosen to work, she didn't deserve to be the target of sexual harassment or assault. There is no excuse for treating anyone that way. It's not the victim's fault, and we should never forget that.
     
    Slate and the New York Times both have opinion pieces that Franken needs to resign. Even though I like what he's done in the Senate, I'm of the opinion that they're probably right, especially if the Democrats want to take the moral high ground with Moore.
  24. Like
    L. Marcus reacted to death tribble in In other news...   
    Death of a pioneer
    http://www.bbc.co.uk/news/uk-england-gloucestershire-42012740
     
    This next one if repeated would be the downfall of civilisation as we know it.
    http://www.bbc.co.uk/news/world-asia-42009839
     
    Da Vinci painting sells for a little bit
    http://www.bbc.co.uk/news/av/entertainment-arts-42006584/leonardo-da-vinci-artwork-sells-for-record-450m
  25. Like
    L. Marcus reacted to Cancer in More space news!   
    I had to do a bit of library searching to find this, but when synchronous rotation develops, the orientation of the spin axis also undergoes a forced change.   Exactly what happens depends on what other masses are in the system and where those are.  I have found decent discussions of this only in papers dealing with known systems with more than two bodies, for example Earth's Moon (considering the Earth-Moon-Sun system) and the satellite system of Jupiter (the planet plus three or four of the Galilean satellites).  For Earth's Moon, there are small but constant-in-magnitude-but-not-direction differences between the orientation of the Moon's spin axis and the orientation lines perpendicular to Moon's orbit around Earth and Earth's orbit around the Sun.  Put another way,  the spin axis and the normal to Moon's orbit plane around Earth precess around the normal to Earth's orbit around the Sun, and the three are always coplanar.
     
    If the moon were perfectly spherically symmetric, or fluid, then the orbit also would be driven to circular.  But with a solid and rigid body, it may end up in a state close to but distinctly and persistently different from circular.  This is true, e.g., for Earth's Moon, which has an orbit eccentricity around Earth of 0.055 (compare the eccentricity of Earth's orbit around the Sun, 0.0167, a perfect circle is exactly zero).
     
    The most comprehensible discussion of this that I've found is in one chapter (chapter 19, "Europa" by Chyba and Phillips) of a team-written book Planets and Life, edited by Sullivan and Baross, published 2007 by Cambridge U Press.  While some chapters from that book can be found separately and downloaded for free, I haven't found this one in that form.  It's written as a graduate-level textbook for students coming from a variety of disciplines, which means it's a bit more approachable.  See if you can find it in a library.
     
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