Recent content by Drakkith

  1. Drakkith

    How to become brilliant?

    You can start by setting tangible, specific goals. Everything you've listed is intangible and unquantifiable. Choose a specific school you want to get into. Choose a career you want to aim for. Choose goals and milestones that you can easily recognize when they've been completed. Don't aim to...
  2. Drakkith

    Medical Is 5 milliamps at 240 volts dangerous?

    Did you lick the terminals again, Berk?
  3. Drakkith

    A Pandora's Box: Carbon-14 vicious cycle from transmutation

    Yes, it does. While there may be some kernel of truth here, the vast majority of it makes no sense. Thread locked.
  4. Drakkith

    Extinction event in my story, is it believable?

    For reference, a solar mass object placed 4 light years away from Earth has a tidal force of only 3.1x10-23 N. Compare this with the Moon's tidal force of 1.08x10-6 N, a difference of 17 orders of magnitude. To get the same tidal force from a mass placed 4 light years away you would need...
  5. Drakkith

    Extinction event in my story, is it believable?

    No. Galactic tidal forces are immeasurably weak owing to the huge distances between objects in space. By far the largest source of tidal forces on Earth is from the Moon, with the Sun exerting 46% of the tidal force the Moon does despite being about 27 million times more massive than the Moon.
  6. Drakkith

    Courses Forced to do PLTW's HBS (Human Body Systems) sophomore year, easily disturbed by gory stuff

    I'm sorry to say, but you may have to accept that you'll simply have to take a class or two that you don't like. And it's likely to keep happening into college and even into your future career. That's life. Talk to the staff at your school, talk to your parents, but don't be surprised if there...
  7. Drakkith

    B Help answer student question about infinity?

    That's fine if you want to discuss the history of this topic, but those views are a century or more out of date now, so why bring them up? There have been many, many mathematicians in the last hundred years just as smart, productive, and knowledgeable as Cantor, Hilbert, and other mathematicians...
  8. Drakkith

    Courses Forced to do PLTW's HBS (Human Body Systems) sophomore year, easily disturbed by gory stuff

    I recommend talking to a counselor or someone else in the school staff about this, along with your parents. There may be some way to avoid taking this course and instead taking another science course, or taking a higher level course or a different subject now and two science courses next year...
  9. Drakkith

    B Help answer student question about infinity?

    Generally it is the responsibility of the person proposing a position to provide references supporting that position when asked to do so. If, by your own admission, you cannot make sense of math publications then I recommend not supporting a minority or fringe position on a topic. You can, of...
  10. Drakkith

    I Insulator band gap and applied voltage?

    No, the band gap is the energy needed to excite an electron from the top of the valence band to the bottom of the conduction band. Notice that band gaps are often given in electronvolts, not volts. An electronvolt is a unit of energy, while the volt is a measure of electric potential, two very...
  11. Drakkith

    I Explanation for homemade digital microscope's optical systems?

    Per the link: The microscope has a simple operation principle based on changing the magnification and the focus by adjusting the relative distances between a camera, a single objective lens and a sample. Unfortunately I can't find anything about the objective lens, either in the link itself or...
  12. Drakkith

    I Looking for a formula for damage when sliding to a stop

    I wouldn't consider sliding a collision, no. I'm not familiar with that equation. It looks like the kinetic energy formula but with an extra term for distance. You're actually looking for the wrong thing here. You don't care about the force applied to the body, that's going to be roughly the...
  13. Drakkith

    I Looking for a formula for damage when sliding to a stop

    I'm not quite sure what you're trying to get at. The biggest factor in whether you sustain injury or not is wearing protective gear. It just so happens that protective gear often has less friction than skin does, which would explain why you can slide far longer before coming to a stop. Where...
  14. Drakkith

    Tidal friction and global warming

    Why would the water be gone? Unless it escapes into space there's nowhere for it to go. There are no truly spherical planets, moons, or other bodies: 1. There are no bodies that are entirely homogenous. That is, all objects in space have some difference in composition, density, shape, or other...
  15. Drakkith

    B Understanding the electric field

    It's not complicated. Charges create an electric field around themselves that then exerts a force on other charges. Exactly how everything works in detail is given by the relevant equations. I'd expect a physicist to understand these concepts 'to the core', but not a high school student. That...
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