#equations for physics

[er-cryptid]

Power

-- power = time rate of doing work

-- formulas:

P = ∆W / ∆t P = F ∗ v P = F ∗ v ∗ cosθ

-- F = instantaneous force

-- v = instantaneous velocity

-- θ is the angle between F and v

-- if power does not vary with time, the formula is:

P = W / t

-- units are joules per second, J/s

-- this is equivalent to the watt

1 J/s = 1 W

-- horsepower is another common unit

1 hp = 746 W

[valtsv]

me trying to explain to people that being likable and/or funny and/or sympathetic and/or physically attractive are not rewards you get for being a good person but simply side effects of being a person with no inherent moral weight and that characters who are "bad people" having these qualities does not mean that the author endorses all of their actions or wants the audience to root for them

[synelven]

my take on an arcane university au (jinx and ekko are top of the class)

[maybeinanotherworld]

physics professors are really going through it- every day, I think about my quantum physics professor who once went on a rant about how there's too many types of mustard these days followed by the words "well, at least quantum physics is less complicated than the mustard aisle" followed by one of the most cursed derivations I have ever seen

[questcequecestqueca]

This monstrosity here is known as the “Standard Model Lagrangian”. It's an equation that encapsulates everything we currently know about particle physics.

[8o8o8o8o8]

Much like how our brains can calculate trajectory (aka aim) even when we don't know the formula, I think Gabriel and all angels just intuitively understand advanced math, because what is god's design if not the laws of physics, and what is physics if not applied math.

And you know what is also math? Programming. He would not be entirely wrong to deify V1 as they might as well have divinity running in their circuits. In this essay I will

[solanumflare]

okay I think I've figured out another thing that makes me pissed at reese discourse and how people talk about him

as a disabled person, if I learned that my disability-- a disability that stopped me from feeling fully alive and seeing my friends and leaving my house and left me in immense pain and fatigue and led people to act like I'm so fragile I can't even do the smallest things to try and enjoy life-- was caused by somebody close to me who I believed cared about me, who was one of the main people perpetuating the act of treating me like even seeing other people is too much and like I should just sleep in the dark and do nothing and not enjoy what I have left of life under the pretense of not wanting me to be affected badly by my disability, I would want to kill them too.

reese isn't a perfect person but he sure as hell isn't unjustified.

[anakinskywalkers]

PHANTOM TRAVELER SUPERNATURAL (2005)

[studiousandrogynousfox-blog]

aerosols is an interesting course but the amount of content is insane

[skylargoesbark]

my math teacher: it's okay that you all did poorly. we're just humans.

me: uhh...

[noosphe-re]

Each rock is a wave equation – a complex model of bifurcation and wave formation. The involutions of unstable gestures have made an avatar of mathematical conjecture, and like holograms of time feeling space to predict a future state, each curve in stone foresaw a future boundary state to return its figured sum. But perception, distracted by the rock's baroque designs, may forget the secret forces that framed its final form – the tiny interferences, the micro-instabilities, and the Laplacian quests of flow regimes. Endless habits carved to stone as the tireless sculptor of the manifold weaves its liquid signals into space. Shells may store the sounds of waves, but Taihu stones compile the liquid physics into an alphabet of epsilons and upsilons – the sinusoidal cells of tidal swells and the shapes that sign the lunar paths.

Paul Prudence, Figured Stones: Exploring the Lithic Imaginary

[neilgayman69]

Having a cane can be fun cuz I just put googly eyes all over mine to match my Jonathan Sims cosplay I'm going to a convention as this weekend.

[kaiserouo]

(prev)

terrifying mercenary doing terrifying things (math)

i don't know limbo theorem, void physics and actual real-world physics so i'm just gonna use the only proof system i know, which is natural deduction.

this was a homework problem for my computational logic class, which is kinda interesting if you're only gonna deal with it for one semester. natural deduction serves as a starter though, model checking and program verification is the actual fun part, but i forgot almost everything so i guess this would suffice.

[jesskasb]

poking the bear again

[spacejax]

Resources that have helped me in my classes!

(will add to this list as I find/remember more)

Classes I've used these in so far:

Honors Mechanics

Honors Thermodynamics & Optics

Relativity & Quantum Mechanics

Theoretical Mechanics

Calculus I, II, III

Differential Equations

Mathematical Techniques in Physics

Introduction to Astronomy

Fundamentals of Astronomy

Astronomy & Astrophysics

- - - - Youtube Channels - - - -

Physics

Michel van Biezen - oh my god I love him. I think he uses Sears and Zemansky's University Physics for example problems. His channel has 10k videos (!!!) and is very well-organized. He also lectures on math (from 5th grade to linear algebra), chem & organic chemistry, and astronomy.

Calculus

The Organic Chemistry Tutor - I mostly watch his videos on Calculus I-III and Differential Equations, but he also covers physics and chemistry.

Nancypi - Precalculus, Calculus I, and some of Calculus II. I barely showed up to calc lectures my first semester so she was a great help. also i have a crush on her

Michel van Biezen - I usually don't watch his math videos because his notation and techniques are different from what my prof makes us use

Astronomy

Urknall, Weltall, und das Leben - my literal dream channel. perfect levels of dryness, and videos are usually at least 45 minutes long. It's entirely in German though lmao

Michel van Biezen - covers important topics in introductory astronomy, and also does example problems (although I think they're all algebra-based)

- - - - Textbooks - - - -

Introduction to Cosmology - Barbara Ryden

Foundations of Astrophysics - Ryden & Peterson

University Physics - Sears and Zemansky

Calculus - James Stewart

Modern Physics - Kenneth Krane

Classical Mechanics - John Taylor

- - - - Workbooks - - - -

Essential Modern Physics - Chris McMullen, Ph.d. ----- LIFE CHANGING. BUY THIS FOR INTRO TO QUANTUM.

[nablavii]

Hello there! Today we've finally started real physics. Diffusion equation into nuclear and radioactivity phenomena, yup. That censored equation related to Oppie's adventure in the Manhattan project.