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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.23 22:03:00 -
[31]
 Originally by: Jaerl
I can't honestly see how the inside of a frisbee would be travelling faster than the outside, unless you're seeing it from some strange extra-dimensional perspective.
Orbital Mechanics has the concept he's seeing. Higher orbits have lower orbital velocity than lower orbits. (RL orbits defined by gravity, not EVE forced-orbits). Yet the mechanics that get you there are counterintuitive. To speed up, you slow down. To slow down, you speed up. To move retrograde in the same orbit, you thrust out. To move prograde in the same orbit, you thrust down. Normal and antinormal bring you back.
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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Karma
Gallente
Vortex Incorporated
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Posted - 2007.12.23 22:11:00 -
[32]
perhaps the OP meant to ask 'why does a frisbee spin faster inside (indoors) than outside (outdoors)' ... ?
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Jaerl
Caldari
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Posted - 2007.12.23 22:27:00 -
[33]
Originally by: Karma
perhaps the OP meant to ask 'why does a frisbee spin faster inside (indoors) than outside (outdoors)' ... ?
That would have saved my brain exploding from Sister Impotenta's previous post. Seriously though, I hope you just made all that up and that is some sort of new-maths, because reading all that made my brain hurt from too many long words. 
Up is down and slow is fast? 
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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.23 23:08:00 -
[34]
Originally by: Jaerl
That would have saved my brain exploding from Sister Impotenta's previous post. Seriously though, I hope you just made all that up and that is some sort of new-maths, because reading all that made my brain hurt from too many long words.
Up is down and slow is fast?
Orbiter is the long answer, and will give you much understanding. For the short answer, you're going to have to wait because I have some last minute "christmas shopping" to do. If I'm sober enough when I get back, I might get into it.
If you want to do your own thought experiment while I'm out:
Consider a weight at the end of a string. Twirl it around your head. Bring it in close, and you have to twirl wicked fast. "Wheewheehweeheehee". Let it out far and you only have to twirl it slow, "WhoooWhumphwoooUmphwooo." Now, when you want to go from in-fast to out-slow, you whip it harder. When you want to go from out-slow to in-fast, you'll do what I do: cheat and pull the string in. But that's like arbitrarily increasing gravity. To do it right, you let the weight slow down, and take up the slack. Now disregard the string and continue on your own, for "out takes you back" and "in takes you forward".
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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7shining7one7
Quafe Paladins
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Posted - 2007.12.24 02:57:00 -
[35]
Edited by: 7shining7one7 on 24/12/2007 03:02:23
totally besides the op but interesting
they follow the complex magnetic grids of earth as their internal compass when they migrate or fly in general.
they also use this type of interaction in regards to avoid hitting eachother when flying in formation when going in their fast paced speeds and doing sudden shifts in direction.
ingenious design
as for gravity well science doesn't really truthfully know what gravity is, they just know that it works but they are still quite clueless as to exactly how it works, faith, seeing is believing.
anyways, looking forward to duckie for christmas dinner, merry christmas everyone.
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brennan reed
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Posted - 2007.12.24 09:32:00 -
[36]
speaking of the outside of a frisbee moving faster than the inside, does that mean my head is traveling faster than my feet? I mean, the earth is rotating just like a frisbee and my head is closer to the outside.
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Jaerl
Caldari
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Posted - 2007.12.24 09:58:00 -
[37]
I think we might be wandering into gravity (mass) vs. centrifugals (spin) here, but yes - your head is moving faster than your feet according to that theory... does that mean according to relativity your head is slightly older than your feet when you die?
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Derovius Vaden
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Posted - 2007.12.24 10:02:00 -
[38]
Originally by: RogueWing
The outside actually spins faster.
If you were to unroll the frisbee into a straight line, then the "outside" line would be longer than the "inside" line.
They both spin for the same amount of time. But, since the outside covers further territory than the inside does in the same amount of time, then it must be traveling faster.
This. Its the same reason the Earth accelerates at the extremes of its orbit around the sun; we must cover a greater distance in the same time.
And ducks fly in a V-shaped formation because of wing-tip vortices and the lift generated by them, not the drag induced on the animals themselves. Only thing of value I learned in my fluids class.
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Miki Fin
Gallente
Independant Union of Rangers
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Posted - 2007.12.24 12:19:00 -
[39]
Listen, in order to maintain air-speed velocity, a swallow needs to beat its wings forty-three times every second, right?
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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.24 14:06:00 -
[40]
Depends on the type of swallow.
Y'all know that the stork brings babies, right? Well you know what keeps babies away?
Two Swallows.
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.24 14:44:00 -
[41]
Originally by: brennan reed
speaking of the outside of a frisbee moving faster than the inside, does that mean my head is traveling faster than my feet? I mean, the earth is rotating just like a frisbee and my head is closer to the outside.
Yes, by about one part in three and a half million at the equator, diminishing to almost nothing at the poles. However during the day, when your head is pointed at the sun, the earth's motion around the sun decreases the relative motion, it increases at night. Assuming you're not in bed, sleeping.
Keep in mind also that time runs at different rates between your head and your feet. I think it runs slightly faster at your head. So the effect is magnified.
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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insanebe
Caldari
Swordbruden Mining and Security Service Inc.
Rare Faction
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Posted - 2007.12.24 18:30:00 -
[42]
You need to be careful hear in what you measure, i.e you need to measure the number of spins of the frisby so obviously when you think about it its crazy to think the inside has somehow detached itself from the outside and down 2 complete spins while the outside has done only one spin, so the number of rotations is the same
knowledge is power.... guard it well |
Frezik
Basically Outdated Stereo Equiptment
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Posted - 2007.12.24 18:54:00 -
[43]
This is my favorite thread in a long time.
Did you guys know that:
∞ + 1 = ∞
And:
(∞ - ∞) + 1 = ∞ - ∞
Therefore:
1 = 0
Yay for math!
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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.24 20:03:00 -
[44]
I thought ∞ was transcendental, and therefore not subject to algebraic rules, but a quick look does not support either of my beliefs.
Either way, I would have thought that (∞-∞)+1=∞
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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Frezik
Basically Outdated Stereo Equiptment
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Posted - 2007.12.24 20:15:00 -
[45]
Originally by: Sister Impotentata
I thought ∞ was transcendental, and therefore not subject to algebraic rules, but a quick look does not support either of my beliefs.
Yes, that's basically what the above proves; you can't use infinity as a number like that.
Either that, or you just proved that the universe blew up. Note that if you turn in a thesis proving the universe blew up, you're probably not going to get a doctorate.
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Derovius Vaden
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Posted - 2007.12.24 21:17:00 -
[46]
Originally by: Frezik
This is my favorite thread in a long time.
Did you guys know that:
∞ + 1 = ∞
And:
(∞ - ∞) + 1 = ∞ - ∞
Therefore:
1 = 0
Yay for math!
Infinity is not a number, and thus you cannot do algebraic operations on it. Its like saying apple + orange = orapple. A function can go TO infinity, but it does not equal infinity, as infinity is a philosphical conceptual rather than a tangible "thing" or number.
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Sister Impotentata
Elite Angels Of Death
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Posted - 2007.12.24 21:27:00 -
[47]
Edited by: Sister Impotentata on 24/12/2007 21:30:02
Merry Christmas, DV. I wish you the best, and good luck with finals. 
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TANSTAAFL
Originally by: Psycho John Petrucci
If there's any point where you feel it's too difficult, then just stop. Because you just, you don't have it, you're just not good.
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Frezik
Basically Outdated Stereo Equiptment
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Posted - 2007.12.24 21:30:00 -
[48]
Originally by: Derovius Vaden
Infinity is not a number, and thus you cannot do algebraic operations on it. Its like saying apple + orange = orapple. A function can go TO infinity, but it does not equal infinity, as infinity is a philosphical conceptual rather than a tangible "thing" or number.
So much for a sense of humor . . .
I'm rather fond of the above proof. It shows a concept a lot of people struggle with (infinity is not a number) without using anything more than basic algebra.
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Bob Stuart
Federation Fleet
Chaos Incarnate.
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Posted - 2007.12.25 02:06:00 -
[49]
Ducks, geese and swans have differing lift and drag coefficients. This means that the number of birds to form a V (or skein as it is called when it is composed of geese) with a particular aerodynamic efficiency differs between species. In all cases though, as the number of birds increases, the efficiency of the formation increases.
One of our aerodynamics classes at university had an exercise on calculating the numbers of birds to achieve a particular efficiency. Someone thought they would try to be funny, and ask about the African and European swallows, but since swallows do not beat their wings continuously, as geese/swans/ducks do, instead they fly with bursts and glides, the equations do not apply.
As a result, the person was made to stand in the corner and think carefully about what they did for the rest of the lecture.
Of course, that was nearly 10 years ago, so I don't think such teaching methods are allowed these days, in case they infringe upon people's right to self-expression.
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Daelin Blackleaf
Aliastra
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Posted - 2007.12.25 08:44:00 -
[50]
a = b + 1
(a-b)a = (a-b)(b+1)
a2 - ab = ab + a - b2 - b
a2 - ab -a = ab + a -a - b2 - b
a(a - b - 1) = b(a - b - 1)
a = b
b + 1 = b
Therefore, 1 = 0.
lolmath
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Seroquel
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Posted - 2007.12.25 09:00:00 -
[51]
an aeroplane on a treadmill will take off. true story.
(\_/)
(O.o)
(> <) This is Bunny. Copy Bunny into your signature to help him on his way to world domination. |
Seroquel
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Posted - 2007.12.25 09:02:00 -
[52]
dividing by zero crits you for 9000
Originally by: Daelin Blackleaf
a = b + 1
(a-b)a = (a-b)(b+1)
a2 - ab = ab + a - b2 - b
a2 - ab -a = ab + a -a - b2 - b
a(a - b - 1) = b(a - b - 1)
a = b
b + 1 = b
Therefore, 1 = 0.
lolmath
(\_/)
(O.o)
(> <) This is Bunny. Copy Bunny into your signature to help him on his way to world domination. |
slipshade
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Posted - 2007.12.25 11:55:00 -
[53]
This is an issue that that designers of the earlier CD rom drives had to figure out...
Problem was soleved using a thechique called CAV or constant angular velocity. which basicly menas the RPM of the drive is adjusted as the laser travels outwards.
Its also a cunning way for optical drive manufacturer's to "trick" you into thinking you are getting a better drive by saying you have a "40x" drive, when in reality its only going this fast for a short period of time
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Karma
Gallente
Vortex Incorporated
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Posted - 2007.12.25 12:15:00 -
[54]
Originally by: slipshade
Its also a cunning way for optical drive manufacturer's to "trick" you into thinking you are getting a better drive by saying you have a "40x" drive, when in reality its only going this fast for a short period of time
yes, but if say a 30x drive is also only going that fast for a short period of time, then a 40x drive would still be faster than a 30x drive. so all's good ;)
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Daelin Blackleaf
Aliastra
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Posted - 2007.12.26 06:47:00 -
[55]
Originally by: Seroquel
dividing by zero crits you for 9000
OH SHI-
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Alena Lemming
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Posted - 2007.12.28 07:48:00 -
[56]
im bored and u have all almost got the answer right.
the bird at the front is causing a vortex with its wing beat (like concord/747's (the pictures u see on tv)
the birds close behind on either side gain additional lift by this vortex, so they have less work to do.
so the guy up front is doing the hardest work and giving the others a boost. they will swap places when he gets annoyed or tired, so eventually on a long trip everyone wil have had a go at the front(unless one or two happen to be selfish old bird's).
the reason why one side might be longer is just down to that side being picked by the last bird in front when it took a break from being point.
Also see under tailgating, F1 racing cars, etc.. the guy tailgaiting is getting a boost in efficiency by getting close enough that the guy in front is moving all the air(and suffering the effects of drag) whilst the tailgater is tucked into the vortex (disturbed air) immediatly behind, though he will suffer less downforce on his front spoiler.
the answer 42 might come into it, but you'll have to ask ferarri if they incorporated it into their designs(then again you could ask any of the other teams since they seem to have been suffering a sudden outbreak of P2P during the last year or so). |
MotherMoon
Huang Yinglong
Namtz'aar k'in
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Posted - 2007.12.28 08:30:00 -
[57]
Originally by: Derovius Vaden
Originally by: RogueWing
The outside actually spins faster.
If you were to unroll the frisbee into a straight line, then the "outside" line would be longer than the "inside" line.
They both spin for the same amount of time. But, since the outside covers further territory than the inside does in the same amount of time, then it must be traveling faster.
This. Its the same reason the Earth accelerates at the extremes of its orbit around the sun; we must cover a greater distance in the same time.
And ducks fly in a V-shaped formation because of wing-tip vortices and the lift generated by them, not the drag induced on the animals themselves. Only thing of value I learned in my fluids class.
and at a smaller scale why the earth rotates faster at the equator and slower at the poles.
however the angular velocity is the same.
which is an important note to keep in mind.
pink supporter!
Future art director at CCP!
or texture guy, either or :P
http://www.digipen.edu/main/Gallery_Games_2004#Narbacular_Drop
Was in class with these folks :P |
MotherMoon
Huang Yinglong
Namtz'aar k'in
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Posted - 2007.12.28 08:34:00 -
[58]
If a post about spining objects is posted on the EvE-o forums at 2 posts and hours and the angular velocity of the earth relative to iceland is a constant, how long until the thread will derail into ducks?
pink supporter!
Future art director at CCP!
or texture guy, either or :P
http://www.digipen.edu/main/Gallery_Games_2004#Narbacular_Drop
Was in class with these folks :P |
Plaetean
Murder-Death-Kill
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Posted - 2007.12.28 08:52:00 -
[59]
thread delivers
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Crumplecorn
Gallente
Eve Cluster Explorations
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Posted - 2007.12.28 13:49:00 -
[60]
If God had intended us to understand this stuff, he would have made us birds.
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DesuSigs |
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