Wind tunnel testing plays a major role in the planning of many space missions. Here a model of the Mars Sample Return Orbiter is tested at Mach 10 to determine the heat shield’s response to aerobraking off Mars’ atmosphere. The colors are the result of electron beam fluorescence, in which an electron gun is used to ionize molecules in the flow, which causes them to emit photons (light). The technique can be used for flow visualization–as in the case of the shock waves shown here–or to measure flow characteristics like density, temperature, and velocity. (Photo credit: Thierry Pot/DAFE/ONERA)
just saying carrying around beakers of acid to splash on people is nowhere close to proper PPE
chemistry: it’s not that STEM students aren’t all nerds, it’s that some of those students carry around beakers of acid. even if you actually manage to punch them, they’ll spill their chemicals on you. also something about constantly drawing hexagons makes people scarily organized. don’t fight chemistry students.
biology: depends. some of them can poison you. but if they’re pre-med, they’ll probably thank you for fighting them, they’re so goddamn stressed. on the other hand, avoid fighting the neuro students. they’ll just set their lab rats on you.
physics: do you know how unnecessarily sidetracked they get? they wouldn’t even fight you. they would just attach you to a spring and calculate your natural frequency as you bounce back and forth until you vomit and don’t want to fight them anymore.
astronomy: yeah you can totally fight them if you can find them. they’re probably in one of those creepy observing domes so if you feel like going out of your way to get attacked by an axe murderer, sure.
geology: they will hit you over the head with rocks and dump your body into a volcano. do not fight the geologists.
math: you can fight the math majors, but there would be no fun in it. they wouldn’t put up much of a fight, their heads are so far in the clouds. they probably wouldn’t even notice getting beaten up if they’re in the middle of a problem.
engineering: look do you want to get hit with a wrench and/or electrocuted
computer science: yes. do it. fight the CS students. every time you’ve ever gotten pissed at a computer, put that rage into your strikes. plus they’ve got such mouths, it’ll be really satisfying. fight them!
Remember all those times your parents told you it was rude to sigh? Well, you can discount that advice entirely, because sighing’s actually a crucial reflex that keeps our lungs healthy, and researchers have just uncovered the switch in our brain that controls it.
The team identified two tiny clusters of neurons in the brain stem that automatically turn normal breaths into sighs when our lungs need some extra help - and they do this roughly every 5 minutes (or 12 times an hour), regardless of whether or not you’re thinking about something depressing.
“Unlike a pacemaker that regulates only how fast we breathe, the brain’s breathing centre also controls the type of breath we take,” said one of the researchers, Mark Krasnow, from Stanford University School of Medicine.
In this video, mixtures of inks (likely printer toners) and fluids move and swirl. Magnetic fields contort the ferrofluidic ink and make it dance, while less viscous fluids spread into their surroundings via finger-like protuberances. (Video credit and submission: Antoine Delach)
Locality:
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
Cuprite is commonly found as an oxidation product of copper sulphides in the upper zones of veins, often associated with Native Copper, Malachite,Azurite, Limonite and Chalcocite. A fibrous form of Cuprite is known as Chalcotrichite
Photo: Michael Förch
hey, your blog is super great and you seem like a beautiful human being. i find you to be super inspiring! i know you get a lot of these questions, but is it okay to punch boys who tell me that i "can't can't be an engineer because I'm a girl"?
Not that I’m advocating violence, but if hypothetically you were to punch a shitty dude for being sexist, you should aim for the solar plexus or the stomach, not the face, because you’re less likely to hurt your hand and you’ll do more damage. Hypothetically of course.