My Friend Just Told Me That Her PI Was Disappointed When One Of Her PhD Students Took A Week Off In The

As a chemist, this entire conversation is triggering my lab safety nerves. Have you geologists heard of PPE?

we do need to lick the rocks to identify them though. i appreciate your concern but...we actually do need to lick the rocks.

Sounds fake but okay

Purification of the “bad blood” from yesterday. 6 hrs later, the column is done and clean, and I’m in bed with Netflix and pizza after 2 looooong days in a row. Thank goodness!

Atomization is the process of breaking a liquid into a spray of fine droplets. There are many methods to accomplish this, including jet impingement, pressure-driven nozzles, and ultrasonic excitement. In the images above, a drop has been atomized through vibration of the surface on which it rests. Check out the full video. As the amplitude of the surface’s vibration increases, the droplet shifts from rippling capillary waves to ejecting tiny droplets. With the right vibrational forcing, the entire droplet bursts into a fine spray, as seen in the photo above. The process is extremely quick, taking less than 0.4 seconds to atomize a 0.1 ml drop of water. (Photo and video credit: B. Vukasinovic et al.; source video)

what do you think about chemical weapons and the use those weapons had against humanity? how do you feel about something as great as chemistry being used for such horrible things?

I’m sorry I just found this message buried in my inbox, so I don’t know when I received it.Short answer: Use chemistry for good. War bad. Chemical based war very bad. Be nice to other humans. Be nice to chemistry 

Gases +  Electric Field 

Click on pictures for more information.

Source

Always Have Ice

While you see many varieties of the common mold in your house and garden, the scientific word to describe them has a fascinating history.  Aspergillus is a genus of 300 or so common molds found in all types of climates around the world.  The Aspergillus mold was first catalogued in 1729 by the Italian priest and biologist Pier Antonio Micheli. These molds are in the fungus kingdom and while almost all are microscopic, colonies of the mold are easily recognizable and can grow quite large. Viewing the fungi under a microscope, Micheli was reminded of the shape of an aspergillum, which is the Latin word for a holy water sprinkler, itself from Latin spargere meaning to sprinkle, and named the fungus for the shape of the sprinkler.

You can see the similarity above, in the image of a silver aspergillium next to a microscopic view of aspergillus mold next to a colony of aspergillus mold growing on a damp terra cotta pot.

Image of aspergillium courtesy of Andreas Püttmann under a Creative Commons 3.0 license.  Image of aspergillus and mold colony courtesy Kathie Hodge and the Cornell University Fungi team.  

What is the shape of a falling raindrop? Surface tension keeps only the smallest drops spherical as they fall; larger drops will tend to flatten. The very largest drops stretch and inflate with air as they fall, as shown in the image above. This shape is known as a bag and consists of a thin shell of water with a thicker rim at the bottom. As the bag grows, its shell thins until it ruptures, just like a soap bubble. The rim left behind destabilizes due to the surface-tension-driven Plateau-Rayleigh instability and eventually breaks up into smaller droplets. This bag instability limits the size of raindrops and breaks large drops into a multitude of smaller ones. The initial size of the drop in the image was 12 mm, falling with a velocity of 7.5 m/s. The interval between each image is 1 ms. (Photo credit: E. Reyssat et al.)

Geminids of the South : Earth’s annual Geminid meteor shower did not disappoint, peaking before dawn on December 14 as our fair planet plowed through dust from active asteroid 3200 Phaethon. Captured in this southern hemisphere nightscape the meteors stream away from the shower’s radiant in Gemini. To create the image, many individual frames recording meteor streaks were taken over period of 5 hours. In the final composite they were selected and registered against the starry sky above the twin 6.5 meter Magellan telescopes of Carnegie Las Campanas Observatory in Chile. Rigel in Orion, and Sirius shine brightly as the Milky Way stretches toward the zenith. Near Castor and Pollux the twin stars of Gemini, the meteor shower’s radiant is low, close to the horizon. The radiant effect is due to perspective as the parallel meteor tracks appear to converge in the distance. Gemini’s meteors enter Earth’s atmosphere traveling at about 22 kilometers per second. via NASA

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(https://iep.utm.edu/art-emot/)

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