30 Amazing Facts That Sound Made Up, But Are Actually TRUE
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13-10-2015, 04:55 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
(12-10-2015 09:37 PM)Airportkid Wrote:  
(12-10-2015 10:25 AM)Chas Wrote:  Planet Average Diameter (km)
Mercury 4,879
Venus 12,104
Mars 6,771
Jupiter 139,822
Saturn 116,464
Uranus 50,724
Neptune 49,244
Total 380,008
The average distance from the Earth to the Moon is 384,400 km.
This one's full of technicality snags. The diameters of the gas giants to the sixth significant digit in kilometers aren't sensible since their atmospheres thin out: to what atmospheric density are those diameters defined?

But more calamitous is stripping Saturn of its rings. Saturn ain't Saturn unless it's got its rings on, so using space tugs to jostle all these planets into juxtaposition will leave Saturn's rings in place and THAT diameter puts the Moon in the middle of some planet's core. And don't gimme any nonsense about tipping Saturn so its rings are perpendicular - you don't want the edge of the rings to start cutting into the stack of supporting turtles. These lists just never quite get everything all taken into account. Facepalm

No one is suggesting actually doing this or that it is even possible. Dodgy

It's just something to show the scale of things. Facepalm

Skepticism is not a position; it is an approach to claims.
Science is not a subject, but a method.
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14-10-2015, 01:49 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
Numbers 8, 22 and 29 especially, are all complete bull shit.

I don't care how many times you fold a piece of paper, its thickness is not going to exceed the distance it takes to get to the fucking moon.

Otherwise folding it 4 times should make the thickness of the paper at least a foot thick.


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14-10-2015, 05:44 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
(14-10-2015 01:49 PM)Shadow Fox Wrote:  Numbers 8, 22 and 29 especially, are all complete bull shit.

I don't care how many times you fold a piece of paper, its thickness is not going to exceed the distance it takes to get to the fucking moon.

Otherwise folding it 4 times should make the thickness of the paper at least a foot thick.

Agreed. In fact:

https://en.wikipedia.org/wiki/Britney_Gallivan

She was ~16 when she did this. Brilliant!
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15-10-2015, 07:45 AM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
(14-10-2015 05:44 PM)Fireball Wrote:  
(14-10-2015 01:49 PM)Shadow Fox Wrote:  Numbers 8, 22 and 29 especially, are all complete bull shit.

I don't care how many times you fold a piece of paper, its thickness is not going to exceed the distance it takes to get to the fucking moon.

Otherwise folding it 4 times should make the thickness of the paper at least a foot thick.

Agreed. In fact:

https://en.wikipedia.org/wiki/Britney_Gallivan

She was ~16 when she did this. Brilliant!

Quote:A special kind of $85-per-roll toilet paper in a set of six met her length requirement.

Blink Where the fuck do you find an $85 roll of toilet paper?? Does it wipe your ass for you?

(22-08-2015 07:30 PM)Revenant77x Wrote:  It is by will alone I set my brows in motion it is by the conditioner of avocado that the brows acquire volume the skin acquires spots the spots become a warning. It is by will alone I set my brows in motion.
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15-10-2015, 08:50 AM (This post was last modified: 15-10-2015 08:57 AM by Grasshopper.)
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
(14-10-2015 01:49 PM)Shadow Fox Wrote:  Numbers 8, 22 and 29 especially, are all complete bull shit.

I don't care how many times you fold a piece of paper, its thickness is not going to exceed the distance it takes to get to the fucking moon.

Otherwise folding it 4 times should make the thickness of the paper at least a foot thick.

I don't have the relevant facts at hand to compute #29, but the other two are correct. You underestimate the power of exponentiation and combinatorics.

Every time you fold the paper in half, the thickness doubles. After 42 folds, the thickness will be the original thickness times 2 to the 42nd power. 2 to the 42nd power is an enormous number. When I divide the earth-moon distance by that number, I get a paper thickness of 0.00344 inch, which seems reasonable. For more on this, see:

http://www.sciencealert.com/a-piece-of-p...e-universe

Note that nobody is claiming that you can actually do this -- but if you could, yes, it would be that thick.

As for the birthday problem, what they say is absolutely correct. The probability of you sharing a birthday with any one person is only 1/365, but you have to do that 22 times, and then you have to do it for all the other combinations of people. It's a bit more complicated than just adding the probabilities, but you do get exactly the result stated in the OP. For more on this, see:

https://en.wikipedia.org/wiki/Birthday_problem
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16-10-2015, 10:28 AM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
#29 appears to be correct as well:

http://www.theguardian.com/science/occam...3/may/04/1

50 billion kilometers is approximately 30 billion miles.

What's going on here is basically the Archimedean property of the real numbers. No matter how small a number is (e.g., the diameter of a water molecule), you can reach any other number, no matter how big (e.g., 30 billion miles) if you multiply that small number by a sufficiently large number (e.g., the number of molecules in a teaspoon of water). It sounds preposterous, but do the math. It works!
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16-10-2015, 12:14 PM (This post was last modified: 16-10-2015 12:22 PM by Lightvader.)
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
The paper one is true .
I calculated it..
Distance moon-earth =384,400 km(thanks Chas)
384,400 km= ~4*10^5 km=4*10^8m


42 folds=2^42=(2^10)^4 *4
2^10=1042=10^3
(2^10)^4=(10^3)^4=10^12
42 folds=4*10^12


Paper thicknes=0.1 mm=10^-1mm=10^-4m
42 folds paper= 4 * 10^12m * 10^-4m = 4*10^8m

Distance moon-earth=4*10^8m

In truth, the length world exceed the distance.
I rounded 2^10 down and the distance was rounded up, but as long as it isn't wrong by at least a factor of 10, I know I'm on the right path

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16-10-2015, 12:55 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
The 29th is
Volume tea spoon= 5 ml= 5gram
Molar mass water=18 gram/mol
Amount mole water= 5/18= ~0.25=2.5*10^-1
Avogadro's number=6*10^23
Total molecules water= 2.5*10^-1 * 6*10^23 = 15*10^22=1.5*10^23

Diameter water molecule = 3nm=3*10^-9m(thanks Google)

(1.5*10^23 ) *(3*10^-9)=4.5*10^14. m

30 billion miles= ~45 billion km= 4.5*10^10km= 4.5*10^13m

Either I erred somewhere, it the site is wrong

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It's too damn "peopley" out there....
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16-10-2015, 01:01 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
Oh, I see my error.
Water molecule diameter=0.3 nm=3*10^-10
So length=(3*10^-10)*(1.5*10^23)=4.5*10^13

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It's too damn "peopley" out there....
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16-10-2015, 01:02 PM
RE: 30 Amazing Facts That Sound Made Up, But Are Actually TRUE
So 29 is correct

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