August12014
9PM
bijoux-et-mineraux:

Realgar, Galena and Quartz - Paloma mine, Peru

bijoux-et-mineraux:

Realgar, Galena and Quartz - Paloma mine, Peru

(Source: ebay.com)

8PM

centralscience:

Testing if some small vials were quartz or glass. Quartz transmits UV light, whereas glass will block it. I need quartz vials for an experiment involving photodegradation.

(via thecraftychemist)

7PM
kockamaniahu:

Lego Theme park (by OliveSeon)

kockamaniahu:

Lego Theme park (by OliveSeon)

5PM
4PM

klikkinfo:

Anaconda Falls / Anakonda vízesés

source / forrás: JBIronWorks

4PM

the-average-gatsby:

alright you guys have posted some pretty bad jokes on here but not one comes close to this doozy

brace yourselves

so there’s a far-off place that consists of a perfectly triangular lake surrounded by land, with three kingdoms on the three sides of the lake. the first kingdom is rich and powerful, filled with wealthy, prosperous people. the second kingdom is more humble, but has its fair share of wealth and power, too. the third kingdom is struggling and poor, and barely has an army.

the kingdoms eventually go to war over control of the lake, as it’s a valuable resource to have. the first kingdom sends 100 of their finest knights, clad in the best armor and each with their own personal squire. the second kingdom sends 50 of their knights, with fine leather armor and a few dozen squires of their own. the third kingdom sends their one and only knight, an elderly warrior who has long since passed his prime, with his own personal squire.

the night before the big battle, the knights in the first kingdom drink and make merry, partying into the late hours of the night. the knights in the second kingdom aren’t as well off, but have their own supply of grog and also drink late into the night.

in the third camp, the faithful squire gets a rope and slings it over the branch of a tall tree, making a noose, and hangs a pot from it. he fills the pot with stew and has a humble dinner with the old knight.

the next morning, the knights in the first two kingdoms are hung over and unable to fight, while the knight in the third kingdom is old and weary, unable to get up. in place of the knights, the squires from all three kingdoms go and fight. the battle lasts long into the night, but by the time the dust settled, only one squire was left standing - the squire from the third kingdom.

and it just goes to show you that the squire of the high pot and noose is equal to the sum of the squires of the other two sides

(via unbalancedfox)

4PM

arrenkae:

failed skill checks are the best

(via shaq-stoned)

3PM

fuckyeahfluiddynamics:

Wingtip vortices are a result of the finite length of a wing. Airplanes generate lift by having low-pressure air travelling over the top of the wing and higher pressure air along the bottom. If the wing were infinite, the two flows would remain separate. Instead, the high-pressure air from under the wing sneaks around the wingtip to reach the lower pressure region. This creates the vorticity that trails behind the aircraft. I was first introduced to the concept of wingtip vortices in my junior year during introductory fluid dynamics. As I recall, the concept was utterly bizarre and so difficult to wrap our heads around that everyone, including the TA, had trouble figuring out which way the vortices were supposed to spin. A few good photos and videos would have helped, I’m sure. (Photo credits: U.S. Coast Guard, S. Morris, Nat. Geo/BBC2)

(via localizeduniverse)

2PM

bijoux-et-mineraux:

Chalcopyrite var. “Blister Copper” - Illogan, Cornwall, England

(Source: irocks.com, via megacosms)

12PM
11AM
tastefullyoffensive:

"Lift me, human!"

tastefullyoffensive:

"Lift me, human!"

(via sawnik)

10AM

rockon-ro:

Beautiful electric blue crystals of CHALCANTHITE (Copper Sulfate) that were grown in a laboratory in Poland. Photo taken at 15X with a stereo microscope.

(via mineralia)

9AM

ohstarstuff:

Cassini Spacecraft Reveals 101 Geysers and More on Icy Saturn Moon

Scientists using mission data from NASA’s Cassini spacecraft have identified 101 distinct geysers erupting on Saturn’s icy moon Enceladus. Their analysis suggests it is possible for liquid water to reach from the moon’s underground sea all the way to its surface.

Over a period of almost seven years, Cassini’s cameras surveyed the south polar terrain of the small moon, a unique geological basin renowned for its four prominent “tiger stripe” fractures and the geysers of tiny icy particles and water vapor first sighted there nearly 10 years ago. The result of the survey is a map of 101 geysers, each erupting from one of the tiger stripe fractures, and the discovery that individual geysers are coincident with small hot spots. These relationships pointed the way to the geysers’ origin.

Thanks to recent analysis of Cassini gravity data, the researchers concluded the only plausible source of the material forming the geysers is the sea now known to exist beneath the ice shell. They also found that narrow pathways through the ice shell can remain open from the sea all the way to the surface, if filled with liquid water.

The fact that Enceladus’ sea is salty, laced with organic compounds, spouting into space, and maybe even rising up to the surface has raised this particular Saturnian moon as a major target for future exploration.


Cross-section of Ice Shell (Artist rendering)

Credit: NASA JPL

(Source: jpl.nasa.gov, via ohstarstuff)

July312014

(Source: thoracs, via sawnik)

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