FIRST LOOK AT ANT-MAN & THE WASP!

FIRST LOOK AT ANT-MAN & THE WASP!

FIRST LOOK AT ANT-MAN & THE WASP!

The superhero couple rocking their sweet looking suits!

More Posts from Lokarprincipal and Others

4 years ago

Um lugar bem peculiar.

lokarprincipal - Conhecimento é Poder
4 years ago

O inferno são os outros.

lokarprincipal - Conhecimento é Poder
2 years ago

Piuiii

2 years ago
Oliver Jackson-Cohen As James In Surface (2022) Episode Eight “See You On The Other Side”  
Oliver Jackson-Cohen As James In Surface (2022) Episode Eight “See You On The Other Side”  
Oliver Jackson-Cohen As James In Surface (2022) Episode Eight “See You On The Other Side”  
Oliver Jackson-Cohen As James In Surface (2022) Episode Eight “See You On The Other Side”  

Oliver Jackson-Cohen as James in Surface (2022) episode eight “See You on the Other Side”  

1 year ago

Sewing Machines & Planned Obsolescence

Sewing Machines & Planned Obsolescence
Sewing Machines & Planned Obsolescence

I've got these two sewing machines, made about 100 years apart. An old treadle machine from around 1920-1930, that I pulled out of the trash on a rainy day, and a new Brother sewing machine from around 2020.

I've always known planned obsolescence was a thing, but I never knew just how insidious it was till I started looking at these two side by side.

I wasn't feeling hopeful at first that I'd actually be able to fix the old one, I found it in the trash at 2 am in a thunderstorm. It was rusty, dusty, soggy, squeaky, missing parts, and 100 years old.

How do you even find specialized parts 100 years later? Well, easily, it turns out. The manufacturers at the time didn't just make parts backwards compatible to be consistent across the years, but also interchangeable across brands! Imagine that today, being able to grab a part from an old iPhone to fix your Android.

Anyway, 6 months into having them both, I can confidently say that my busted up trash machine is far better than my new one, or any consumer-grade sewing machine on the market.

Old Machine Guts

Sewing Machines & Planned Obsolescence
Sewing Machines & Planned Obsolescence

The old machine? Can sew through a pile of leather thicker than my fingers like it's nothing. (it's actually terrifying and I treat it like a power tool - I'll never sew drunk on that thing because I'm genuinely afraid it'd sew through a finger!) At high speeds, it's well balanced and doesn't shake. The parts are all metal, attached by standard flathead screws, designed to be simple and strong, and easily reachable behind large access doors. The tools I need to work on it? A screwdriver and oil. Lost my screwdriver? That's OK, a knife works too.

New Machine Guts

Sewing Machines & Planned Obsolescence
Sewing Machines & Planned Obsolescence

The new machine's skipping stitches now that the plastic parts are starting to wear out. It's always throwing software errors, and it damn near shakes itself apart at top speed. Look at it's innards - I could barely fit a boriscope camera that's about as thick as spaghetti in there let alone my fingers. Very little is attached with standard screws.

And it's infuriating. I'm an engineer - there's no damn reason to make high-wear parts out of plastic. Or put them in places they can't be reached to replace. There's no reason to make your mechanism so unbalanced it's reaching the point of failure before reaching it's own design speed. (Oh yeah there is, it's corporate greed)

100 years, and your standard home sewing machine has gone from a beast of a machine that can be pulled out of the literal waterlogged trash and repaired - to a machine that eats itself if you sew anything but delicate fast-fashion fabrics that are also designed to fall apart in a few years.

Looking for something modern built to the standard that was set 100 years ago? I'd be looking at industrial machines that are going for thousands of dollars... Used on craigslist. I don't even want to know what they'd cost new.

We have the technology and knowledge to manufacture "old" sewing machines still. Hell, even better, sewing machines with the mechanical design quality of the old ones, but with more modern features. It would be so easy - at a technical level to start building things well again. Hell, it's easier to fabricate something sturdy than engineer something to fail at just the right time. (I have half a mind to see if any of my meche friends with machine shops want to help me fabricate an actually good modern machine lol)

We need to push for right-to-repair laws, and legislation against planned obsolescence. Because it's honestly shocking how corporate greed has downright sabotaged good design. They're selling us utter shit, and expecting us to come back for more every financial quarter? I'm over it.

6 years ago

Bom saber

problem solving tips that actually worked for me

Hey there!

If you have a math, or science related subject (like I always do), you’ll find that you really can’t escape analysis and problem solving, especially if you’re majoring in something science or maths related. So I am here to share some tips that actually made studying technical subjects a little bit easier and manageable for me in college:

Practice solving. If you have a subject that requires you to solve, you really have to practice solving, there is no easy way out of this one. This allows you to develop your own technique in solving the problem. You can start by doing the problems you did in class, then venture out to some examples in textbooks, then further into the problems in the textbooks until you get the hang of how the concepts and theories are applied. 

Listen during class. I know, it’s boring. But you have to do this. This way, you’ll be able to understand the topic once it is presented to you. In my opinion, it’s better if you let an expert explain it because they know the important bits in the lesson. Then study it afterwards on your own to develop your own techniques.

Ask your professors. Don’t be afraid to ask questions in class. Or if you’re shy, you can ask them after the class. However, it’s important that you ask them about the lesson when you already did your part; meaning: you already studied the material/solution over and over again but there’s just something that you can’t seem to grasp. 

Study before the class. Studying the lesson in advance doesn’t hurt. Plus, it works because you already have an idea about it. However, I don’t do it usually. What I do is that prior the discussion, I study the lessons that are going to be essential to the next topic. Example: Say that our topic later will be about introduction to thermodynamics (which includes derivation of various thermodynamic formulas); what I’m going to study instead is the different integration and derivation techniques, and different basic thermodynamics concepts like laws of thermodynamics. This ensures me that I know the prerequisite lessons of the next topic in class.

Absorb the conceptual parts of the topic first. Before diving into the problems itself, try to digest the concepts or theories behind it first. This way, you can understand which information is important and easily think of a solution because you know the problem’s framework. Even when your professor gives you a problem that seems different from your other sample problems, the concepts will still be the same throughout.

Reverse engineer the solution. Reverse engineering is reading and understanding your solution from bottom to top. I do this to make connections while going through the solution. I usually ask myself “‘where did this come from?’, ‘why did this happen?’, or ‘why is the answer like this?’” It allows me to look into the parts that I missed which are usually concepts or theories that I forgot to apply in solving the problem.

Look for key terms or phrases. There are some problems that put in information that may seem unimportant, but actually is really important. Examples such as the phrases constant velocity, constant acceleration, starting from rest, accelerate uniformly, reversible isothermal, adiabatic conditions, isobaric/isochoric compression/expansion, etc., are easy to miss but actually gives you vital information especially when solving a problem.

Try to ask yourself how or why it happened in every step of the solution. You can do this to gauge your mastery of the lesson. If you can answer yourself confidently, then you’ve studied well enough. But, if you can’t or if you feel that it’s not enough, then you better get your pen, paper, and calculator to practice some more.

If you have to draw it, draw it. Some problems need the use of your imagination, and these problems are the ones that get tricky most of the time. It’s easier to draw each of the time frames that are important so you get the sense of what’s going on between these pictures. This way, you’ll know which information you’re missing and which ones are you failing to take into account.

It’s okay to be messy and slow while practicing. Not all of time you can solve in a tumblr-esque manner because, dude, tumblr notes or solutions are soooo pretty to look at, BUT, what’s more important is that you understand each step of the solution and how the answer came to be 8.0658 m/s directed 32° south of west. So it’s okay to have dashes, strikethroughs, and crosses on your scratch paper, as long as you’re learning, a messy solution on a paper you’re not going to submit to your professor is fine.

IF YOU’VE REALLY GOTTEN THE HANG OF SOLVING IT, try to solve a fresh set of problems as fast and accurately as you can. Try to solve as if you’re in an exam. This is also to gauge how well you’re prepared for it, but you need to do this accurately. I repeat, accurately. It doesn’t work if you’ve finished it in less than an hour but all of your answers are wrong.

Rest. If you know that you’ve done a good job, then take your mind off of everything first and let it wander to wherever it wants to wander. You deserve it ✨

5 years ago

Jóia

Notetaking

Notetaking

Sound Note - take notes while you record audio

Evernote - notetaking that syncs across platforms

Paper 53 - minimal notetaking that syncs

Microsoft OneNote - collaboration and syncing, best for Office users

Google Keep - jot things down, best for Google suite users

Notability - take notes and annotate PDFs

Mindly - create mind maps

Day One - a digital journal

Flash Cards

Quizlet - the quintessential flash card app

StudyBlue - another commonly used app

Cram - best for its “cram mode”

Eidetic - uses spaced repetition for effective memorization

Planner 

My Study Life - schedules, tasks, reminders, and more

StudyCal - keeps track of tasks, exams, and grades

24me - automated reminders and event planning

iStudiez - schedule and prioritized task list

Google Calendar - a calendar, best for Google users

Glass Planner - a calendar and to do list with incredible functionality

To Do List

Clear - organized to-do and reminders

MinimaList - simple to-do and focus timer

Trello - collaborative project organizer

Todoist - clean and functional task manager

Default notes app on your phone

Time Management

Forest - plant trees by staying focused

Pomotodo - pomodoro timer with to-do list

Timeglass - custom timers

Tide - pomodoro with white noise

Alarmy - forces you out of bed 

Pillow - smart alarm that tracks sleep cycles

Productivity

Workflow - automate tasks

Habitica - turn your habits into an RPG

Continuo - simple, colorful activity tracking

Freedom - block distracting apps

Free Learning

Coursera - free MOOCs

TED - listen to Ted Talks

Duolingo - language learning

Memrise - spaced repetition language vocabulary

Khan Academy - free video lessons

Ambient Noise

8tracks - curated playlists

Spotify - online music streaming

Coffitivity - cafe ambience

Noisli - background sound generator

Rain Rain - rain sounds

Binaural - binaural beats

Health

Rockin Ramen - recipes based on ramen

MealBoard - meal planning

Lifesum - healthy eating

Stop Breath And Think - mindfulness meditation

Pacifica - mental health management

Sworkit - personalized video workouts

Waterlogged - hydration tracker

Reference

WolframAlpha - Google on steroids

Oxford Dictionary - all of English at your fingertips

RefMe - citation generator

PhotoMath - solve math problems by taking a photo

Mathway - step by step math help

Desmos - free graphing calculator

Wikipedia - not the best source, but it’s handy

Miscellaneous 

Companion - stay safe when walking alone

Mint - money management

Toshl - finance manager

Tiny Scanner - scan documents

6 years ago

Oh my gosh :)

lokarprincipal - Conhecimento é Poder
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lokarprincipal - Conhecimento é Poder
Conhecimento é Poder

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