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  1. MarkFL

    Trump’s Anti-Science Campaign

    Trump’s Anti-Science Campaign I find this particularly disturbing:
  2. MarkFL

    Speaking of "heat index"...

    I was doing a bit of reading last night on how the heat index is computed, and I discovered that the concept of the heat index was first devised by a meteorologist local to my area, George Winterling. George is retired now, but most people in the Jacksonville area over the age of 30 will likely...
  3. MarkFL

    The NFL is back!

    Do you know how I know? I sat down tonight to watch a TV show I like only to find a bunch of pituitary cases grunting over an inflated pigskin instead. YAY!!!
  4. MarkFL

    Two cyclists and a fly

    Jim Bob and Ellie May live exactly 10 miles apart along a straight road, and they wish to ride their bicycles to meet because their kin are a feudin' and they must meet in private. They depart their homes at precisely the same time, and cycle towards one another each at a steady pace of 5 mph...
  5. MarkFL

    The motorist and the hill

    Suppose a motorist is going over a hill...it is one mile up to the top and one mile from the top to the bottom on the other side. On the way up the hill, the motorist travels 30 miles per hour...how fast must the motorist go down the hill so that his/her average speed over the entire hill is 60...
  6. MarkFL

    Do black holes have a back door?

    Do black holes have a back door? One of the biggest problems when studying black holes is that the laws of physics as we know them cease to apply in their deepest regions. Large quantities of matter and energy concentrate in an infinitely small space, the gravitational singularity, where...
  7. MarkFL

    Researchers chip away at Smale's 7th unsolved problem in mathematics

    Researchers chip away at Smale's 7th unsolved problem in mathematics How do you arrange a group of points on the surface of a sphere so that all the points are as far apart from each other as possible? With two points, the answer is easy: place them on opposite sides of the sphere, as if they...
  8. MarkFL

    CP violation or new physics?

    CP violation or new physics? Over the past few years, multiple neutrino experiments have detected hints for leptonic charge parity (CP) violation—a finding that could help explain why the universe is made of matter and not antimatter. So far, matter-antimatter asymmetry cannot be explained by...
  9. MarkFL

    Making computers reason and learn by analogy

    Making computers reason and learn by analogy Using the power of analogy, a new structure-mapping engine gives computers the ability to reason like humans and even solve moral dilemmas.
  10. MarkFL

    Robots come to each other's aid when they get the signal

    Robots come to each other's aid when they get the signal Sometimes all it takes to get help from someone is to wave at them, or point. Now the same is true for robots. Researchers have completed work on a project aimed at enabling robots to cooperate with one another on complex jobs, by using...
  11. MarkFL

    New mathematical method reveals structure in neural activity in the brain

    New mathematical method reveals structure in neural activity in the brain "We have adopted approaches from the field of algebraic topology that previously had been used primarily in the domain of pure mathematics and have applied them to experimental data on the activity of place...
  12. MarkFL

    Jupiter's great red spot heats planet's upper atmosphere

    Jupiter's great red spot heats planet's upper atmosphere Researchers have discovered that Jupiter's Great Red Spot may provide the mysterious source of energy required to heat the planet's upper atmosphere to the unusually high values observed. I'm just glad Earth doesn't have "perpetual...
  13. MarkFL

    Astronomers confirm faintest early-universe galaxy ever seen

    Astronomers confirm faintest early-universe galaxy ever seen Scientists have detected and confirmed the faintest early-universe galaxy ever, using the W. M. Keck Observatory on the summit on Mauna Kea in Hawaii. The team detected the galaxy as it was 13 billion years ago.
  14. MarkFL

    Solution To Math Problem Posed To iBot

    Hello iBot and CH, iBot requested that I show how a problem I posed to it is solved: iBot's Request The problem can be found here, and I am posting the solution here so I can use $\LaTeX$. The problem is as follows: In order to solve this problem, we may rely on the following formulas...
  15. MarkFL

    Weird quantum effects stretch across hundreds of miles

    Weird quantum effects stretch across hundreds of miles Scientists have discovered strange quantum effects hold, even over hundreds of miles. In longest test of quantum mechanics, researchers find neutrinos, traveling over 450 miles at close to speed of light, have no single identity. The...
  16. MarkFL

    What's The Next Number In The Sequence?

    I thought it might be fun if we have a thread where a user posts the first terms in a sequence, just enough terms to that a rule for determining the next and following number can be inferred. Those responding should not only state the next number, but the rule they used to find it. Then the...
  17. MarkFL

    Longest maths proof would take 10 billion years to read

    Longest maths proof would take 10 billion years to read I thought Andrew Wiles' ~300 page proof of Fermat's Last Theorem was impressive, but this is staggering! :o Speaking of Wiles and Fermat: Remembering when Wiles proved Fermat's Last Theorem Yes, I do remember exactly where I was and...
  18. MarkFL

    Astronomers find evidence for ‘direct collapse’ black hole

    Astronomers find evidence for ‘direct collapse’ black hole Astronomers have discovered evidence for an unusual kind of black hole born extremely early in the universe. They showed that a recently discovered unusual source of intense radiation is likely powered by a "direct-collapse black hole,"...
  19. MarkFL

    If life can make it here, it can make it anywhere

    If life can make it here, it can make it anywhere Scientists explore the likelihood of complex life existing elsewhere in the universe If the origin of life is common on other worlds, the universe should be a cosmic zoo full of complex multicellular organisms. Scientists use the evolution of...
  20. MarkFL

    Black hole born without stellar parent, evidence suggests

    Black hole born without stellar parent, evidence suggests Scientists have known for some time now that certain stars can give rise to black holes upon their "death." Our sun is far too small to ultimately result in a black hole, and its fate is said to be that of a white dwarf. However...
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