|
|
|
|
BigPapaSmurf
SFN Die Hard
3192 Posts |
 Posted - 05/13/2005 : 10:54:28
|
I was asked about the volume of sand grains that would equate to all the stars in the universe, heres the info for anyone who loves pointless stats.
Sand is classified as being between 75 microns and 4.75mm,
General estimate of stars in the universe is about 10^21.
75 microns= 421,875,000 M^3
.5mm = 125KM^3 or a cube 5KM wide.
4.75mm = 107,171 km^3.
|
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
|
|
Plyss
Skeptic Friend
Netherlands
231 Posts |
Posted - 05/13/2005 : 11:42:59 [Permalink]
|
quote:
Originally posted by BigPapaSmurf
I was asked about the volume of sand grains that would equate to all the stars in the universe, heres the info for anyone who loves pointless stats.
Sand is classified as being between 75 microns and 4.75mm,
General estimate of stars in the universe is about 10^21.
75 microns= 421,875,000 M^3
.5mm = 125KM^3 or a cube 5KM wide.
4.75mm = 107,171 km^3.
How much is that in beer bottles filled with sand? |
 |
|
|
Valiant Dancer
Forum Goalie
USA
4826 Posts |
Posted - 05/13/2005 : 11:49:19 [Permalink]
|
quote:
Originally posted by Plyss
<blockquote id="quote"><font size="1" face="Verdana,Arial,Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by BigPapaSmurf
I was asked about the volume of sand grains that would equate to all the stars in the universe, heres the info for anyone who loves pointless stats.
Sand is classified as being between 75 microns and 4.75mm,
General estimate of stars in the universe is about 10^21.
75 microns= 421,875,000 M^3
.5mm = 125KM^3 or a cube 5KM wide.
4.75mm = 107,171 km^3.
How much is that in beer bottles filled with sand?
[/quote]
Now you're just being cruel.  |
Cthulhu/Asmodeus when you're tired of voting for the lesser of two evils
Brother Cutlass of Reasoned Discussion |
|
|
|
BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 05/13/2005 : 12:49:07 [Permalink]
|
Well I guess that depends on which sand type and if you fill the bottles to the brim or cap it at the 12 fluid ounce or pint level or whatever...
The .5mm sand stopped at the 12 fluid ounce level of American standard bottles would be...
1.25 x 10^17 cm^3 of sand / 354.882356 cm^3 per bottle = 352,229,401,903,542 full bottles plus a partial bottle. |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 05/13/2005 : 12:51:54 [Permalink]
|
quote:
Originally posted by BigPapaSmurf
75 microns= 421,875,000 M^3
That's the answer I got, or a cube 750 meters on each side.quote:
.5mm = 125KM^3 or a cube 5KM wide.
I get 125,000,000,000 m3.
0.5mm = 0.0005m.
Cubed = 1.25 x 10-10 m3
Times 1021 = 1.25 x 1011 m3
While this is, indeed, a 5,000-meter cube... Oh, I see what the problem is. You're doing 125(KM3), instead of 125K(m3). Duh, my bad.quote:
4.75mm = 107,171 km^3.
Or a cube 47,500 m on a side.
Of course, since the cube-root of 1021 is 107, the sand-grain size times 107 is equal to the length of the side of the cube into which 1021 such sand grains will fit.
Plyss wrote:quote:
How much is that in beer bottles filled with sand?
If we do pints, it's much easier to estimate. A pint is about half a liter, and there are 1,000 liters in a cubic meter, so 1021 sand grains 0.5mm each would fit into 250,000,000,000,000 pint glasses, give or take.
Okay. 12-ounce American beer bottles with precision:
bottles = (grain-size)3 x 2.818172x102475-micron = 1,188,916,131,214.07 bottles
0.5mm = 352,271,446,285,649.87 bottles
4.75mm = 302,028,731,259,159,057.60 bottles Good enough? |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 05/13/2005 : 12:58:41 [Permalink]
|
| Damn I need to write a program to calculate the space lost due to uneven stacking of the sand particles... |
"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 05/13/2005 : 13:09:55 [Permalink]
|
| Actually, since sand grains are often closer to spheres than cubes, and so could pack closer together, the above figures are probably upper limits. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
Dave W.
Info Junkie
USA
26022 Posts |
Posted - 05/13/2005 : 13:17:00 [Permalink]
|
| I mean, a sphere 75 microns in diameter has a volume of 2.209 x 10-13 m3, whereas a cube 75 microns on a side has a volume of 4.219 x 10-13 m3. A very significant difference. |
- Dave W. (Private Msg, EMail)
Evidently, I rock!
Why not question something for a change?
Visit Dave's Psoriasis Info, too. |
|
|
|
Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 05/13/2005 : 13:19:49 [Permalink]
|
Are you guys considering that the grain of sand itself isn't cubic, and not fluid/amorphus?
If you have a litre of sand in a container, there's also a lot of air in between the grains. I bet you can pour a quarter, perhaps even a half-pint of water in that litre of sand without it pouring over.
The moral: If life is a bucket full of sand, and you've filled it with so much that you can't put more into it, you'll know there's always room for a nice beer on top. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
|
|
|
Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 05/13/2005 : 13:22:06 [Permalink]
|
| Heh... I missed BigPapaSmurf posting about uneven stacking. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
|
|
|
Randy
SFN Regular
USA
1990 Posts |
Posted - 05/13/2005 : 14:12:55 [Permalink]
|
From "Ask the Astronomer".....
http://www.astronomycafe.net/qadir/q2865.html |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
|
|
|
 |
|
|
|
Topic Locked
