This is an amazing idea 10 comments
jimcrichton
· 9 years ago
Well, you're not meant to use it while someone is driving the car.
11
Swedes winning at life 13 comments
jimcrichton
· 9 years ago
Burning trash reduces its volume, thus less landfill space is needed. Also, why would you NOT try to recover useful energy from the trash?
9
South Park ending 6 comments
jimcrichton
· 9 years ago
It seems like they've been actively TRYING to get canceled, playing "how much can we get past the censors".
50
Netherlands - The moses bridge 4 comments
Dashing through the 8 comments
jimcrichton
· 9 years ago
If speed is your goal, then you may want to consider an alternate lubricant.
18
Incredible paper cut 4 comments
Dmx though 3 comments
jimcrichton
· 9 years ago
But they need Scooby to do things like bait their traps (in exchange for a Scooby-Snack of course).
1
Waltz like it's 1698 32 comments
Men will always find a way 9 comments
jimcrichton
· 9 years ago
You're thinking of trying to suck fluid up from lower than oneself. In this case, once he gets some beer into the straw it will become a siphon and he'd better be prepared to drink it all at once.
3
How to annoy your sister 11 comments
No science here, please 4 comments
A truck spilled its load of carbon dioxide 9 comments
Titanium blades 14 comments
jimcrichton
· 9 years ago
*through
Also, only if you hit them along a cleavage plane in a shearing motion.
1
Also, only if you hit them along a cleavage plane in a shearing motion.
I almost lost my shit during service 9 comments
jimcrichton
· 9 years ago
Nah, you're good. God has a sense of humor. After all, He created farts.
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Edited 9 years ago
Mind=blown 5 comments
jimcrichton
· 9 years ago
FALSE
Lets give a generously large estimate for the size of a grain of sand at 2mm (0.2 cm) diameter. Assume a spherical grain of sand (which is again, generously large) and calculate volume:
(4/3)*pi*(0.1cm)^3 = 4.19E-3 cc (cc= cubic centimeter)
The density of quartz (what sand is made of) is 2.65 g/cc so
(4.19E-3 cc)*(2.65 g/cc)= 1.11E-2 g
Silicon dioxide (quartz) has a formula mass of 60.08 g/mol so
(1.11E-2g)/(60.08 g/mol)= 1.84E-4 moles of SiO2
Each mole of SiO2 has 3 moles of atoms so
(1.84E-4)*3= 5.54E-4 moles of atoms
One mole is 6.022E23 atoms so
(5.54E-4 moles)*(6.022E23 atoms) = 3.33E20 atoms per grain of sand
The number of stars in the observable universe is estimated at 1E29.
3.33E20 < 1E29
There are not more atoms in a grain of sand than stars in the universe.
QED.
(Justification for size of sand grain: http://en.wikipedia.org/wiki/File:Wentworth-Grain-Size-Chart.pdf)
5
·
Edited 9 years ago
Lets give a generously large estimate for the size of a grain of sand at 2mm (0.2 cm) diameter. Assume a spherical grain of sand (which is again, generously large) and calculate volume:
(4/3)*pi*(0.1cm)^3 = 4.19E-3 cc (cc= cubic centimeter)
The density of quartz (what sand is made of) is 2.65 g/cc so
(4.19E-3 cc)*(2.65 g/cc)= 1.11E-2 g
Silicon dioxide (quartz) has a formula mass of 60.08 g/mol so
(1.11E-2g)/(60.08 g/mol)= 1.84E-4 moles of SiO2
Each mole of SiO2 has 3 moles of atoms so
(1.84E-4)*3= 5.54E-4 moles of atoms
One mole is 6.022E23 atoms so
(5.54E-4 moles)*(6.022E23 atoms) = 3.33E20 atoms per grain of sand
The number of stars in the observable universe is estimated at 1E29.
3.33E20 < 1E29
There are not more atoms in a grain of sand than stars in the universe.
QED.
(Justification for size of sand grain: http://en.wikipedia.org/wiki/File:Wentworth-Grain-Size-Chart.pdf)
The truth about a career in chemistry 8 comments
Sharks need fiber for a balanced diet 6 comments
jimcrichton
· 9 years ago
[citation needed] I doubt very much that the main problem is sharks. The kevlar is mostly to confer extra tensile strength and to reinforce the cable against abrasion.
1
Ol' Rufus is a bad ass with the sling shot 2 comments
jimcrichton
· 9 years ago
That's even more impressive given that he's using irregularly and inconsistently shaped projectiles (random stones)!
1
Someone ran over a wrench. I didn't know this was possible 9 comments
jimcrichton
· 9 years ago
Ok, so here's my theory. The first tire kicked the wrench up off the ground and it had not settled onto its side before the second tire reached it. So the second tire pushed against the end of the wrench while the other end was pushed against the road surface, thus providing enough force to pierce the tire.
4
·
Edited 9 years ago
