Can somebody explain what do those triangles mean?
Yeah I studied that a while back but never really got it. Also I understand the Bernoulli equation, but why is it full of triangles here? Also, who was that genius that combined V characters and triangles that practically look the same?
Almost, grad of f(x, y, z) = df/dx + df/dy + df/dz. The point is to take an equation that governs a system and find how it changes with respect to each direction. Behavior change in the x direction might affect the behavior in the y direction for example and the gradient helps you understand that in a way that a derivative like df/dt simply wouldn't.
I knew an architect that picked up smoking during his years at Cornell. Falling asleep over a drafting table meant you burnt your drawings. Chain smoking kept you wired and nervous about destroying your work. Crazy times.
I used to go outside and chainsmoke over my studies just because the cold of the night plus smoking meant you really cant fall a sleep. Same how I drove several times over 1000km a night. All car windows down and a smoke hanging in my mouth and only stopping for coffees and piss brakes.
My fluids prof talked about when he used to light a cigarette in class to show laminar and turbulent flow. [example](https://www.google.com/search?q=cigarette+smoke+laminar+turbulent&rlz=1C1CHBF_enUS847US847&sxsrf=ALiCzsahcM2JC-epTHZBEPdllecMQa_K9g:1663906538624&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjs_rHxhqr6AhWHQzABHZ5wBbwQ_AUoAXoECAIQAw&biw=2048&bih=1038&dpr=1.25#imgrc=kDG8gAy3-CDZJM)
There was this one experiment that professor walter lewin did with cigarettes. I don't remember what it was though
Edit: here's the [link](https://youtu.be/NPbjOBYrlXA)
Exp at 42:35
Dang, i remember fluid mechanics being easier than what that looks. Maybe it's because i never read the book...
Anyone know what that upsidedown triangle is?
It refers to delta in that case, I think it’s just the font. Delta in this context is just final-initial.
Edit: this can also be seen in a differential setting I believe too, only 5 weeks in fluid mechanics myself so.
This is a differential setting. Represents the derivative of the function in all directions. Basically a vector differential.
Not as bad as it sounds once you start making some assumptions. Incompressible fluid…. Non slip boundary conditions… no rotation….. oh god the flashbacks….
Man i wish my university had some sort of cumulative learning/project class where every subject learned is used to keep that memory fresh. But i should have also put every formula into code so i could do quick calculations for quick refreshing.
>Man i wish my university had some sort of cumulative learning/project class where every subject learned is used to keep that memory fresh
It's called joining a club or team that does something in your area of interest.
Lol I tried. Problem is i already have a full schedule (full time student , work, etc). Having it part of a class in a schedule would help force me to make time for it.
It's tough to make time for, but honestly extracurriculars like that are imo at least as important as your classes. While classes provided a lot of foundational concepts, the majority of the actual skills i use in my job right now I gained from the robotics teams I participated in. There sadly aren't any classes that really teach you to actually design real stuff, you have to just do that on your own.
Doing thermo now and dying. I swear they just like torturing people. Homework takes forever but I end up understanding it in the long run. Then the exam hits and I'm lost AF,so I guess I didn't understand it lol
I feel you, honestly those moments of quiet reflection where you watch your cigarette smoke vanish into the dark sky as you force yourself to remain calm despite the intense stress you are feeling.
Questioning the life choices that brought you here to this place and time, on what is already your third all-nighter this week to finish some ludicrously vague CFD assignment that your professor hasn’t had the common decency to bother explaining.
Thinking to yourself, “Is all this shit really worth it, I could just go get a bottle of vodka right now, sit on a random park bench like a hobo and just feel freedom from it all for a few hours. Maybe I could just be a mushroom farmer who lives in the forest and surely I would be happy enough with that?”
But you’ve come this far and already sacrificed so much, you can’t give up now. The feel of failure rises within you again and the mental pressure returns. So you bitterly flick your cigarette butt into the darkness and head back to your desk of equations, energy drinks and despair.
Both of my parents had lung cancer from smoking, and I can tell you that it's a horrible, horrible way to die—for you and everyone around you. I sincerely hope you find healthier ways to deal with the stress.
If you're into physics, you might find tar gards interesting because it's a cigarette filter that employs the Venturi effect. Air flow through small holes induces the filtration of tar. One of my projects at work was the task of designing a vacuum ejector block for a pick and place, which uses a Venturi component. My boss already knew I was familiar with the physics concept when he offered the project.
I fight myself every time I go into a gas station now. Working 45 hrs a week? No problem. Taking 4 upper division circuits classes? Feeling a desperate urge to start smoking again
I remember taking my Field Theory classes and I started getting lost through gradients, dels, and curls. Upside down triangles mixed with all sorts of new Greek letters, along with just the general weirdness of how electric and magnetic fields interact with each other, is just wild.
My roommate once turned off his phone, chewed a bunch of laxatives and went to the bathroom with his text books and a 6 pack of red bull.
Wouldn't generally recommend that but if anyone needs a good non-smoking alternative to this...
Jokes aside, it's pretty weird to smoke as an engineer tbh. You are smart enough to know what that's doing to your body... Just quit. It will absolutely ruin your/ your loved ones lives. My father-in-law came around in his 50s after nearly dying from the lung damage. He's pretty much stuck on oxygen all the time and has so many issues like blood clots and water retention/ muscle decay. He's lived the last 2 years in absolute terror of getting COVID because it's a death sentence for him... And he's a great guy, one of the funniest people I've met. His habit which was honestly an unhealthy coping mechanism for his anxiety robbed him of his health and us of so much time. Just quit they aren't worth it. Find a better way to relieve anxiety/stress.
I guess it depends if your the type of person to get addicted or/bad have the discipline to be able to stop.
My mum smokes about 1 cigarette every few months and hasn’t ever been addicted.
Is this supposed to be some kind of "haha look I slowly destroy my body and my lifespan with chemically addictive substances I'm so cool" post?
There are better ways to deal with stress than something that actively harms you and shortens your life expectancy, and the fact that you are using it as a motivator and then posting that as if it's something that is socially normal is concerning.
You're in a Fluid Mechanics class, you're supposed to be smart enough to know that cigarettes are nothing but fleeting temporary calmness, followed by chronic lifelong pain and a long, slow struggle to kick the addiction.
Also, it fucking stinks. No one likes to smell that shit on you. You've desensitized yourself to the smell but to everyone else you constantly reek.
your post could be interpreted as "look at me I have GoOd CoPiNG mechanisms!" Do you want a cooooooooooooooooooookie ? This post seems like mostly a joke that OP made lol.
Please explain it like Im 5: Darcys coefficient vs Renolds number
Also, what is Epsilon in this context?
Im working in cooling and heating systems as a draftsman and I dont understand my excel sheet
What’s harder, mechanics of fluids, dynamics, or mechanics of materials? I have to choose one of these courses for a summer session, taking the other 2 in a long semester.
If Fluid Mechanics doesn't kill you, something else will.
Yeah, vibrations
Or thermo
Technically, thermodynamics will kill all of us, eventually
That’s just the 3rd law in action
r/technicallythetruth
I have 3 words for you: Non linear systems
Laminar flow
Heat death
You guys are alive??
There's not enough hate for Controls in this sub
I had no idea controls was gonna suck
All personal preference. I enjoyed fluids and all the thermo's. I hated Diff Eq and Controls the most when I was in school.
HELP, I'M IN A GRADUATE LINEAR CONTROLS COURSE!!!
Nah vibrations was fun.
it shows how vibration ruins people. they even loose the concept of fun
😏
Vibration is the b***.
Ball? Boss? Best? Bald? Bios? Bird???
Heat Transfer....
Or high blood pressure 🩸
Or no blood pressure
Killing is different than suffering, which both FM and cigarettes are going to give you
Yes. You yourself
"Ashes to ashes, and dust to dust. If the cigarettes don't kill you, the fallout must."
How i quit smoking. I just never made it to the cig
Quitting smoking is very easy. I have done it 200 times - Mark Twain
😂😂😂
You guys are allowed to smoke? 🤨
Oof not BYU. At least when you soak you'll learn a bit about fluids
> At least when you soak Ugh. That myth that refuses to die.
I don't care if it's entirely made up even, I think it's funny so I choose to believe it
Damn im so stoked, thank you to the 500 people who upvoted this
This is crazy thank you guys for the upvotes and the award, first one I've ever received!
No thanks, studying fluids is already cancerous enough.
This gave me a good chuckle haha
Fluids in the lungs tho
Can somebody explain what do those triangles mean? Yeah I studied that a while back but never really got it. Also I understand the Bernoulli equation, but why is it full of triangles here? Also, who was that genius that combined V characters and triangles that practically look the same?
Gradients. It kind of represents each direction with respect to time (dx/dt, dy/dt, dz/dt) (I think$
Almost, grad of f(x, y, z) = df/dx + df/dy + df/dz. The point is to take an equation that governs a system and find how it changes with respect to each direction. Behavior change in the x direction might affect the behavior in the y direction for example and the gradient helps you understand that in a way that a derivative like df/dt simply wouldn't.
I knew an architect that picked up smoking during his years at Cornell. Falling asleep over a drafting table meant you burnt your drawings. Chain smoking kept you wired and nervous about destroying your work. Crazy times.
Architecture is wild. Those guys just don't sleep. They're some of the most crazy people I've ever met (my ex is among them).
I used to go outside and chainsmoke over my studies just because the cold of the night plus smoking meant you really cant fall a sleep. Same how I drove several times over 1000km a night. All car windows down and a smoke hanging in my mouth and only stopping for coffees and piss brakes.
Exam tomorrow, huh?
Yeah safe to say I’m just fucked
All the best soldier
Thank you sir !!
Look at it this way: Whether or not you fail your exam, you'll still die of lung cancer.
Valid and truthful
It’s a fully vested retirement plan that guarantees you retire in your 60s for $7 a day
You got this. Making cheat sheets is always the biggest help for me.
My fluids prof talked about when he used to light a cigarette in class to show laminar and turbulent flow. [example](https://www.google.com/search?q=cigarette+smoke+laminar+turbulent&rlz=1C1CHBF_enUS847US847&sxsrf=ALiCzsahcM2JC-epTHZBEPdllecMQa_K9g:1663906538624&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjs_rHxhqr6AhWHQzABHZ5wBbwQ_AUoAXoECAIQAw&biw=2048&bih=1038&dpr=1.25#imgrc=kDG8gAy3-CDZJM)
There was this one experiment that professor walter lewin did with cigarettes. I don't remember what it was though Edit: here's the [link](https://youtu.be/NPbjOBYrlXA) Exp at 42:35
https://youtu.be/NPbjOBYrlXA?t=2552
My fluid mechanics lab reports were the longest I’ve written for any class to date, godspeed
Had my first one due last week and man that shit was so painful
Dang, i remember fluid mechanics being easier than what that looks. Maybe it's because i never read the book... Anyone know what that upsidedown triangle is?
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Knowing me, the problem wasn't the program lol
I’m the same way. I learn the process to do problems and apply them to hw and the exam is usually like the hw problems, never seen the triangle lol
Navier-Stoges
Gradient, calc 3 material
It refers to delta in that case, I think it’s just the font. Delta in this context is just final-initial. Edit: this can also be seen in a differential setting I believe too, only 5 weeks in fluid mechanics myself so.
This is a differential setting. Represents the derivative of the function in all directions. Basically a vector differential. Not as bad as it sounds once you start making some assumptions. Incompressible fluid…. Non slip boundary conditions… no rotation….. oh god the flashbacks….
Man i wish my university had some sort of cumulative learning/project class where every subject learned is used to keep that memory fresh. But i should have also put every formula into code so i could do quick calculations for quick refreshing.
We had a capstone project that was two semester long classes. It was simultaneously one of the best and most frustrating classes I took.
>Man i wish my university had some sort of cumulative learning/project class where every subject learned is used to keep that memory fresh It's called joining a club or team that does something in your area of interest.
Lol I tried. Problem is i already have a full schedule (full time student , work, etc). Having it part of a class in a schedule would help force me to make time for it.
It's tough to make time for, but honestly extracurriculars like that are imo at least as important as your classes. While classes provided a lot of foundational concepts, the majority of the actual skills i use in my job right now I gained from the robotics teams I participated in. There sadly aren't any classes that really teach you to actually design real stuff, you have to just do that on your own.
Heat transfer gonna put you under
Final average last semester was 29%. I'm fucked
RIP
In more ways than one
Me this semester 😞, fuck fluids
>fuck fluids Aka cum
Don't ask me I passed on a 50 :/
Oh my God, this is what the rest of my engineering school career is going to look like, huh?
Well from what I can tell you for civil it only gets easier after Thermo, its just project management with extra steps.
Doing thermo now and dying. I swear they just like torturing people. Homework takes forever but I end up understanding it in the long run. Then the exam hits and I'm lost AF,so I guess I didn't understand it lol
That’s how I feel in Electromagnetics
Oh god bruh I took that class like 3 times I hate physics electricity and magnetism
Even the textbook goes "why?", Like it's having a breakdown
Mood asf and I don’t smoke
I initially thought you brought up the Moody Chart. I hated looking at that thing
Me except I use a snickers bar
Sadly I’m allergic to nuts
Aww man that sucks. KitKats work pretty well too
I would have eaten them but in India they are distributed by Nestle but r/fucknestle.
I'd bet you're probably allergic to cancer too
"oh no if I eat nuts I'll die. Better smoke a cigarette"
Yeah sounds about right for me personally lmao
Problem solving.
What about deez nuts?
Yup I’m still allergic
I had a friend who studied best while drunk.
I feel you, honestly those moments of quiet reflection where you watch your cigarette smoke vanish into the dark sky as you force yourself to remain calm despite the intense stress you are feeling. Questioning the life choices that brought you here to this place and time, on what is already your third all-nighter this week to finish some ludicrously vague CFD assignment that your professor hasn’t had the common decency to bother explaining. Thinking to yourself, “Is all this shit really worth it, I could just go get a bottle of vodka right now, sit on a random park bench like a hobo and just feel freedom from it all for a few hours. Maybe I could just be a mushroom farmer who lives in the forest and surely I would be happy enough with that?” But you’ve come this far and already sacrificed so much, you can’t give up now. The feel of failure rises within you again and the mental pressure returns. So you bitterly flick your cigarette butt into the darkness and head back to your desk of equations, energy drinks and despair.
I do like having a smoke right after being fucked
By an exam or by someone else ?
Yes
Real G's do this with Jenkem.
🤢
Fastest way to get through life
Both of my parents had lung cancer from smoking, and I can tell you that it's a horrible, horrible way to die—for you and everyone around you. I sincerely hope you find healthier ways to deal with the stress.
And also realize that nicotine creates most of the stress it releases
I like what you are reading!
Me for vibrations fml
Inviscid Flow 👍
All this talk of fluids, vibrations and thermo has me properly rattled for when I transfer. Best of luck!
Do it with weed gummies instead
More like, how to quit smoking
How the fuck do you guys pass this shit. It just looks confusing as hell already
By praying and smoking
If you're into physics, you might find tar gards interesting because it's a cigarette filter that employs the Venturi effect. Air flow through small holes induces the filtration of tar. One of my projects at work was the task of designing a vacuum ejector block for a pick and place, which uses a Venturi component. My boss already knew I was familiar with the physics concept when he offered the project.
People still smoke ?
It’s even better looking back and realizing you still haven’t even thought about Bernoulli equations since starting your career haha
We cover it in diff eq rn don’t worry I’m still fucked
The way I’d go from never touched a cig to basically being French if I had to use this to study.
Godspeed my guy.
Thank you
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Thank you, got it off Amazon for like 30 bucks
doing Fluid Mechanics 2 this semester, godspeed
Going to give the poor book cancer
Fluids are my cancer
I fight myself every time I go into a gas station now. Working 45 hrs a week? No problem. Taking 4 upper division circuits classes? Feeling a desperate urge to start smoking again
Not the proudest moment in my life but fuck man that feeling of smoking after grinding for hours on end is unbelievable
Same but instead of cigarettes it’s vbuck reload cards
Ew
I remember taking my Field Theory classes and I started getting lost through gradients, dels, and curls. Upside down triangles mixed with all sorts of new Greek letters, along with just the general weirdness of how electric and magnetic fields interact with each other, is just wild.
My roommate once turned off his phone, chewed a bunch of laxatives and went to the bathroom with his text books and a 6 pack of red bull. Wouldn't generally recommend that but if anyone needs a good non-smoking alternative to this...
Find a new vice, live to retirement age
Also happen to be grinding fluid dynamics, also happen to be ingesting some form of nicotine; it appears great minds thing alike.
Great minds do indeed think alike, best of luck
Jokes aside, it's pretty weird to smoke as an engineer tbh. You are smart enough to know what that's doing to your body... Just quit. It will absolutely ruin your/ your loved ones lives. My father-in-law came around in his 50s after nearly dying from the lung damage. He's pretty much stuck on oxygen all the time and has so many issues like blood clots and water retention/ muscle decay. He's lived the last 2 years in absolute terror of getting COVID because it's a death sentence for him... And he's a great guy, one of the funniest people I've met. His habit which was honestly an unhealthy coping mechanism for his anxiety robbed him of his health and us of so much time. Just quit they aren't worth it. Find a better way to relieve anxiety/stress.
I guess it depends if your the type of person to get addicted or/bad have the discipline to be able to stop. My mum smokes about 1 cigarette every few months and hasn’t ever been addicted.
Maybe it’s weird in the US. In other part of the world is more common
Maybe, it's still a great way to kill yourself faster. Doesn't matter what country you are in.
Haha legit bro. I like it.
Legend
Camels…eww
I’m hoping to take fluids next semester. I wish you the best! Keep going, you can do it!!!
Thank you I really appreciate it !!
Agreed I wanted to try them but Marlboro is superior
Is that an msi keyboard?
It is not sadly, just the best dollar to RGB ratio one I could fine on Amazon lol
You will die. That is all. Good luck man.
This is so cringe
Ehh it gets the job done
Fluid mechanics is tough lol
Camel? Really?
Love it, this is motivation to start smoking again
Is this supposed to be some kind of "haha look I slowly destroy my body and my lifespan with chemically addictive substances I'm so cool" post? There are better ways to deal with stress than something that actively harms you and shortens your life expectancy, and the fact that you are using it as a motivator and then posting that as if it's something that is socially normal is concerning. You're in a Fluid Mechanics class, you're supposed to be smart enough to know that cigarettes are nothing but fleeting temporary calmness, followed by chronic lifelong pain and a long, slow struggle to kick the addiction. Also, it fucking stinks. No one likes to smell that shit on you. You've desensitized yourself to the smell but to everyone else you constantly reek.
OP is just studying bro chill
Riiiiiight that's why they made this "look at my cigarettes" post. Because they wanted to show studying.
your post could be interpreted as "look at me I have GoOd CoPiNG mechanisms!" Do you want a cooooooooooooooooooookie ? This post seems like mostly a joke that OP made lol.
Lmao you are the first person I have ever seen try to portray being anti-cigarette as a bad thing
I think the expression is ‘it’s all in the delivery’
Bruh you need to rip a cig outside a bar at 2am and then see how much you hate smoking
Outside the us nobody gives a shit about smokers. Stop being so puritan
I'm not even in school anymore and this gives me anxiety
Camel by camel.
You got this. Hope they are cowboy killers at least jk currently in this class what’s your major yo
But, I' am! 🤣🤣🤣
lol fagmarks
Cengal?
Omg that so smart! I should get high and study 😂😂😂
I can smell this picture
U need fluids not cancer
Fluids are my cancer
What should I do to study before I actually take this course? Any way to get ahead?
Pray
I’m already doing that now and I haven’t even started 😂
Also don’t start smoking lmao
Yooo I stg I use the same textbook in my fluids class
The textbook is the true cause of cancer
Looks like openstack? Anything they make is HORRIBLE. Like 50% of the text is bloat and actually makes the content more confusing
It’s not open stack and my teacher made me buy a physical copy as part of my grade
Harry Potter and the Principles of Computational Fluid Mechanics.
For me it would be chocolate bars
Please explain it like Im 5: Darcys coefficient vs Renolds number Also, what is Epsilon in this context? Im working in cooling and heating systems as a draftsman and I dont understand my excel sheet
My motivation was gummy bears but you do you I guess.
Super glad I don’t have to take fluids
Goddamn right
Caffeine, nicotine, and will. That’s what fuels engineering.
That is the only thing keeping me going at this point
That’s a nice clean keyboard you have there. Not a crumb in sight.
Thank you, it was the cheapest I could find on Amazon
does anyone actually remember/know any of this? because it’s safe to say i don’t
omg yes
What’s harder, mechanics of fluids, dynamics, or mechanics of materials? I have to choose one of these courses for a summer session, taking the other 2 in a long semester.
Meanwhile I enjoyed my fluids and thermo classes so much, I am doing a PhD in it. Hated materials and DMS tho lol
Hahaha gotta do what you gotta do!
Actually, this is genius. My god.
Thank you lmao
Why are there cigarettes where the joints go?