Recent content by physicsisphirst

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    LaTeX Latex howto

    i've been away more than 5 yrs and can't find the thread that used to tell you how to code latex. you could practise there too without burdening others with your errors. where is that thread? or something similar? in friendship, prad
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    Human population

    ok it seems there is no doubt about the growth so the stuff about the 'myth' is likely the biggest myth. however, how is it that the growth rate is declining? in both graphs, there is a tendency for decreasing slope d^2P/dt^2 < 0 i can see it argued that in europe it will decline because...
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    Human population

    i've always been told that the human pop has been going steadily up and up (6E9 in 1999 i think). a site like this http://www.populationaction.org/ seems to support this. now someone has told me this is all a lie by the elite to kill off large segments of the world. ok that's fine - i have no...
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    Parker 61 fountain pen

    well palladin, it's not that it couldn't be said, it's that it doesn't happen at least for this pen which i think works on capillary action. the exact opposite happens as i outlined. i think it could be the way you state it though for a squeeze or cartridge fountain pen and definitely for a...
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    Parker 61 fountain pen

    pallidin, i agree with you and apologize for causing this confusion. i wrote "i keep the pen rightside up (the way you'd carry it on the clip in your pocket)" and it wasn't sufficiently clear especially since pens do have clips in various places though i have never seen a fountain pen that is...
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    Parker 61 fountain pen

    we just have a discrepancy regarding interpretation of orientation. let me rephrase it. if the nib is pointing down, i would think gravity would pull the ink towards the nib - which it doesn't seem to be succeeding in doing if we just leave the pen lying around with the nib pointing down...
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    Parker 61 fountain pen

    i meant just towards the nib, pallidin. presumably with an upside down pen, gravity would pull the ink towards the nib which it does for regular fountain pens and ball points (which don't write too well when the nib is pointing up). in friendship, prad
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    Parker 61 fountain pen

    this is a unique fountain pen from the 60s in that you don't squeeze anything to get ink into it. you just dip the solid one piece 'cartridge' into the ink and it fills, presumably through capillary action - i don't know what's inside, but i doubt if it is a sponge to have lasted all these...
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    Moral dilemma

    geometrick, you don't need to read atlas shugged (it's a big fat book anyway and unlikely to enhance your understanding of math or physics). you merely need to understand that there are many ways to give back and that you don't have to work in the social justice arena to contribute to it. in...
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    Calculus final in 24 hours - failure imminent - need some advice

    greenneub, failing it may not be a bad thing if you don't really understand what you are doing. i recall i didn't attend most of my 1st year calculus classes, but crammed and studied specific areas which just happened to show up on the exam. i pulled off a 75% for the whole course. however, i...
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    Philosophy: Should we eat meat?

    (been away for a week and putting in a very brief appearence for now.) it is precisely for the health benefits to the mother and the baby that people adopt veg diets (just as my wife did!) all this morality stuff aside, it is important to understand that not only can one maintain weight...
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    Very Wierd Physics

    oh dear :frown: i think my physics needs more help than i realized if i have forgotten this sort of thing. :redface: thank you for explaining all this, Gokul.
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    Philosophy: Should we eat meat?

    "athletes need meat" is one of those silly ideas that still occasionally rears its ridiculous head .... well, i suppose since some athletes do use steroids and stuff, they will find a suitable source of those sorts of things in meat etc. :rofl: some people are still under the weird...
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    Philosophy: Should we eat meat?

    thanks for clarifying this francis. if you "treat every animal great and can kill it painlessly", you may not get any objections from the utilitarian faction provided their premise is to minimize suffering. (note: that since this doesn't really happen, it is as you say merely "an exercise")...
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    Very Wierd Physics

    ok thanks for the explanation - it makes sense. but wouldn't the absence of friction decrease the decelerating force and therefore create an acceleration? what about a curling stone that you slide over a carpet that is on an ice rink. what will happen when the rock hits the edge of the carpet...
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