AcademicalNerd @academicalnerd@qoto.org
People are more important than wires.
Joined Jan 2021
Good morning.
2021-01-22, 08:20, Friday. Plain black coffee with very high ratio, almost 10:1. I like it, though.
Yesterday I finished my fifth semester with science work report. Might as well write about my work here. So there are a lot of thermodynamic models of liquids. Modern ones are quite precise, but complicated and have a lot of maths involved. They are very useful to predict the reaction equilibrium or solution's properties, but because of their complexity you need to run them through computer. So people tend to create their own implementations of these models and use them, but diffirent implementations perform calculations slightly diffirently and this can affect results of the study.
The idea is to create a more or less versatile program with GUI, that would be easy to use by anyone and make results reproducible. I now managed to make a prototype with saving, loading and calculating quilibria. The core code of implementation is not mine, however, I use pre-coded model (my colleague made it) to create GUI and more or less intuitive logic around it. The entire thing is in C/C++ and runs quite smootly on binary systems.
#stem #stemtips #student #uni #science #life #lifesyle #qotojournal #coffee #thermodynamics #programming
@freemo I see. Thanks, I will probably use it quite often.
@freemo
Thanks, I will. Is it a hashtag for anything long or anything long and science-related?
Good morning.
2021-01-09, 07:30, Wednesday. Today I'll share some random thoughts on studying STEM related subjects. Might do somthing like this every once in a while.
STEM tips №1: there are no shortcuts. The original quote is attributed to Euclid: there are no royal roads to geometry, he said to king Ptolemey. This my point: you have to put in the hours and effort. A lot of them.
A decent problem in calculus or physics will take you a solid hour even if you have all the notes from your lectures. And there are these problems in every chapter of your textbook and they won't get easier, so cramming this kind of thing gets impossible. Unless your end goal is to pass the test and not to learn something.
I'm in the middle of my third year of bachelorship and there hasn't been a semester where I'd have more than a day off, unless I was ill. It doesn't mean that I always spend the whole day studying, although sometimes I do, but 1-2 hours of studying every morning are a part of my routine now.
Good morning.
2021-01-19, 09:00, Tuesday. Got 4 for my exam (out of 5), which is good enough for me. I'm done with exams for this semester. And since I'm a nerd I'll tell you what the exam was about.
Solid Phase Thermodynamics. It is a separate course from thermodynamics in my uni, and for a good reason. Studying thermal properties in solid phase reactions is usually impossible (because thermal effects are small and the reactions themselves are slow), so there are a few tricks to do it.
The most important and versatile method is the EMF method, which allows to calculate Gibbs energy of the reaction using its' electrochemical properties. So we learned how to use it (how to compose electrochemical cells) and the thormodynamics specific for solid phases, like x-lg(pO2) diagrams.
@Pat @doltamalte @alex
Damn you are right.
Good morning.
2021-01-18, 06:40, Monday. Back home, the exam is in three and a half hours. Solid phase thermodynamics, very weird course that barely lasted for two months. Not sure how it goes, slightly anxious. But at least I had a good rest on Sunday.
My best exam tip - apart from actually studying the subject - is to not break the routine. Even if you have to wake up slightly earlier, do so and drink your usual cup of coffee and write a note in the journal. This will eliminate at least some of the anxiety.
I meant 2021-01-17, Sunday, but whatever. Should've finished that cup before writing.
@Pat @doltamalte @alex
Fahrenheit makes me wanna cry, but it makes sense physically. I am now wandering, if the wind is hotter than the object, will it heat it up faster than idle air?..
Good morning!
2021-01-16, 08:52, Friday. I moved to countryside for a night. It's chilly inside and I can't turn the heanting up because radiators won't survive the pressure. Physics is merciless, but at least I have some ground coffee and a small cezve here. No spices, I just need something warm. And of course my favorite mug < 3
@doltamalte @alex
That's neat. I always thought that realfeel was google's for some reason.
Good morning!
2021-01-06, 08:45, Saturday. So here is a basic cezve coffee recipe.
Finely grind some coffee, starting with 60g/liter and adjusting the ratio to your preference.
Put your coffee into a cezve, add spices. Today I went with some nutmeg and cloves; if you are new to this, cinnamon is generally a good starting point.
Fill the cezve with water and put in on the stove, use weak fire/low setting if you are an induction person. While the coffee is brewing, preheat your cup with hot water from kettle.
Once the water boils and foam starts to form - remove the cezve from fire and pour coffee into the cup. Wait for around two minutes while grounds settle and water adsorbs some more flavors and you are good to go.
@doltamalte @alex
So I ran some math and you seem to be right, at these temperatures (-15 C) it's about 1% heat capacity increase at 100% humidity. Which is weird because it feels really cold. Maybe the wind does it, indeed.
@doltamalte @alex
So you have absolute humidity and relative humidity. Let me explain.
At any temperature air can only hold on to so much water (the excess amount condensates into water). This is the maximum absolute humidity, which you use to calculate relative humidity (in %). And the higher the temperature is, the lower the maximum humidity goes, while the relative one is between 0 and 100% and the absolute value is between 0 and maximum for said temperature.
So for higher temperatures air can get almost wet because it holds a lot of water (that's what you mentioned). At lower temperatures the air is quite dry and you can't feel it like usual, but it plays role in how cold you feel.
I'm not sure what contributes to high humidity at low temperatures but I'm pretty sure salt that is used here to melt ice on the roads increases it quite a bit.
Hope this makes sense.
<good lord it's lengthy, phew>
Good evening.
19:26, Friday. It is ungodly cold here in Moscow. I don't mean the temperature itself, -15C is quite bearable, but 80% humidity and wind turns even short walks into a torturous experience.
And because I'm a nerd, here is an explanation: heat capacity of humid air is higher than it is of a dry air, so it draws more heat from your clothes.
@trinsec
LMAO. I first didn't get it but then read your bio...
On a serious note though, the idea is to not overload your senses in moments of piece and `quiet`, sorry for pun. Not sure what the equivalent for you would be, to be honest.
Good morning.
It's 9:15 am, Friday. Tried coffee with sugar, turns out I don't like it. Brewed a moka pot instead of ruined cup.
I noticed an interesting tendency: I get way more creative ideas when I don't listen to music. While I can't work without some beats in the background, walking with my earphones in for some reason stops my brain from having new ideas. So to all genz-ers who plugs their ears 25/8: try not to for a while, see what happens. It wont hurt, I promise. At least not too much.
Good morning.
It's 8:45 am and I am writing again. For a long time I was unable to stick with my writing habit for some reason. Doing it was a chore, even though I tried all the usual techniques for habit building.
What worked for me is substituting "morning pages" with "coffee notes". I simply start with the same thing every day: what am I drinking at the moment. It is always coffee, but since I use diffirent beans and spices for cezve and sometimes other brew methods, there is a lot to write about. At least enough to get me started.
#coffee #journalling #habits #cezve #jezve
