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absGeekNZ

@ absGeekNZ @lemmy.nz

Posts
6
Comments
315
Joined
3 yr. ago

  • Jeffrey Epstein’s Brother Claims He Heard ‘from a Pretty Good Source’ That Epstein Files Are Being Scrubbed of Republican Names

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  • So like just turn the text background to black....it looks redacted.

  • Megyn Kelly suggests Epstein wasn't an 'actual pedophile' if victims went through puberty

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  • Yep, this pretty much nails it.

    The conspiracy makes them feel a sense of importance that they can't get in any other aspects of their lives. It is sad, these people cause real harm to those around them with these fantasy worlds they buy into.

    Telling them they are wrong, often just feeds the delusion; because you don't know the secrete, this makes them feel more of the same, feeding the conspiracy further.

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  • /s maybe

    Well done; that gave me a chuckle....

    Its not gay if it your own soapy fingers right....right guys....oh fuck maybe I'm gay. No I can't be, I hate the gays!!!!

    • some closeted jock probably.

  • Birthday Gift for a smart 6 year old girl

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  • Another one bites the dust, also works.

  • Is it racist to oppose illegal immigrants?

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  • It depends on where you are.

    e.g. in NZ, we don't have a problem with illegal immigration, but completely legal "temporary migrant workers".

    The issue, isn't the people, it's the load on already stretched infrastructure. Because they are "temporary", they are not factored into the calculations for infrastructure spending.

    This wouldn't be a problem, if a short team need was being met, but it isn't... There are always temporary workers, because we as a country can't fill all the jobs from local supply.

    With birth rates and other immigration, our population growth is around 1.5%, not the 0.5% we target our spending at.

    If we spent at a rate that accounted for the real population growth, everything would work better for everyone.

  • 'Windmill': China tests world’s first megawatt-level airship to capture high winds

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  • Kinda.

  • Can you think of any now?

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  • Getting the washing off the line...time to play "is it still wet, or just cold"

  • Trump to host UFC cage fight on White House lawn to mark 250 years of US independence

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  • Not from USA; but.....Terry Crews would be a great leader; he is way to nice to actually run though.

  • TIL about Dunning Kruger Effect - why people with low competence overestimate and people with high competence underestimate themselves.

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  • Came here to say this.

    It is psychologically satisfying to believe DK, but ultimately just because you like the sound of it, doesn't make it true.

  • What are the most upbeat songs with kind of depressing lyrics?

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  • ordering stuff online

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  • Or $30 product, and "sorry we don't ship to your location"

    Or the fairly regular $30 product with $75 shipping.

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  • Taking the planet as the reference point. Complicates the situation a lot, but here we go.

    If you contrast "A" and "D". The initial velocity in "A" is 1, whereas "D" is 201. The acceleration due to gravity in "A" SEEMS LOWER (this is why external observer is way easier) on the way in and in "D" it seems higher. In "A" you are literally falling for much longer (gaining much more speed); than in "D".

    In "C" and "F" the situations are also different, I over simplified a bit too much. In "C" you would spend more energy than in "F"; since the acceleration due to gravity would seem higher, but not that much more. I should have made the exit angle 90°, to make them exactly equivalent...

    The calculations are significantly more complex from the point of view of either the planet or space craft.

    Thinking about trying to solve a real set of equations is a bit much; there are other concerns; like the fact that gravity drops off at 1/d2; so distance between the objects matters, the integration over distance of the equations is beyond me (I haven't had to do that since uni, 20yrs ago). But the concepts are not too complicated; and for me at least the external observer makes it so much less complicated.

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  • First assume that it is a spherical cow traveling through a vacuum...

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  • It is difficult to conceptualise.

    But you also have to choose the most convenient observer to help you get it.

    I would say the easiest way to "get it" would be to consider it from the Suns observation point of view. Choosing the planet or spacecraft just means that you have to consider a lot more relative motion.

    • Situation A: Your space craft is catching up to the planet;
    • Situation B: You have gained "29" speed as you fall toward it.
    • Situation C: You spend 20 speed climbing back out of the gravity well; for a total speed gain of 9.

    • Situation D: Same setup, you catch the planet quicker because it is now traveling toward you.
    • Situation E: You have only gained "11" speed rather than the 29 when the planet was moving away from you.
    • Situation F: You still spend 20 speed to climb out of the gravity well; for a total speed loss of 9.

    This is obviously simplified and the numbers are meaningless. But the concept stands.

    Depending of the incoming and outgoing angles; the energy changes are more or less....

    Hope this illustrates it a little better.

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  • No, it's hard to explain without diagrams.

    But as you fall towards a planet (any gravity well); you pick up speed, if the planet is moving away from you, you fall for longer before you catch up. As you climb back up, you don't spend all of the energy you gained on the way down. That difference is the Slingshot effect.

    It also works in reverse, if the planet is moving towards you. You catch up quicker, thus gain less speed. And spend overall more energy than you gained when you climb back out. Slowing down in the process.

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  • You are gaining (or losing) energy based on if you are traveling in the same direction at the planet or not.

    If you are coming from behind (travelling in the same direction) you an falling into the gravity well for longer. Thus gaining more energy. The extra energy is based on the speed of the planet through space.

    Conversely if you an coming from the front, you fall for a shorter period. You lose energy at you climb up the gravity well.

  • Atuin replaces your existing shell history with a SQLite database, and records additional context for your commands

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  • Something something magical shell history

  • How would you propose we actually combat climate change?

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  • Well it is a hypothesis that needs testing...