I run some of my services (until very recently including jellyfin) on my HP pavilion G6 from 2007. It still runs my wireguard, backup pihole, heimdall, etc. I run it on Linux mint (it was familiar) and cant do most things on screen (lags hard) but I can ssh or VNC in just fine
Completely fair point, that I do not think I have the knowledge to speak on. On the Trigonometry Wikipedia page, he pops up a few times, and many trig identities are known as pythagorean identities. Perhaps its not fully trig, but was used as a basis to help discover trig? Without having the understanding pythagorus gave mathematicians regarding triangles, I would think it would be pretty hard to begin developing deeper math regarding said triangles
There will be those that do and dont get the “nitty gritty” of the theory side of the math. Those people sometimes become math majors. Normal people (joking, dont be mad math majors), need more than simply the theory side of the math and actually need to see/perform the application side of things. I never once “understood” the lesson in math class when we go over the equations with variables only. I only truly began to learn the material and be able to use it once we got to the example problems. We would do multiple in class and then I would understand how to literally go through the problem and perform the math that was expected of me on the homework, and subsequently the test. There is tons of stuff i know how to use in math, but by no means understand WHY it came to be, or HOW its works for the realm of mathematics. I wanna know how this math can help me solve real life problems, problems I will face in industry, or even just a cool way to apply math in the real world. Not how it will be used in research to find new types of math we wont be able to apply for 70 years.
It was pretty funny being in calculus in college. I was in a class with mostly engineers who were also taking the exact same weed out courses, and nearly every day after the professor would finish showing us the theory side of the lesson, hands would shoot up and the question of, “What application does this have in real life or engineering? Like, how will I actually use this?” always got asked. So not “loving” the theory is by no means uncommon (we all wished for an application focused version of the class to exist, for people like stem students who are not into the math theory lol), but I still see the value in having it presented so that you can have a more foundational understanding instead simply going through the motions
The reason they drill it in to the extent that they do is so that you have a foundational understanding of the underlying math on which to build new knowledge. If you show up in calc 1 in college without remembering even the basic concepts you were previously taught in things like trig…that can really bite you in the ass. My teacher LOVED pulling out classic substitutions for Secant, Cosecant, and cotangent (No, i didnt outright remember them from Trig, but I had seen them, and that made refreshing much easier). Also these concepts then form the basis of many other fields such as physics (electricity/magnetism, kinetic motion, optics, etc.), chemistry (quantum, MO theory, and things relating to the physics side of why chemistry occurs), and many of the graphing concepts used in engineering/stem only make sense if you have the foundational understanding of what integration/derivation are. Those stem from understanding how to graph complex functions by hand (like we did in trig) so that when you are doing it later with assistance, you still GRASP what is going on.
Yes its not perfect, and yes for people who never need that later in life it can suck. However, I would make the argument it is better to have more of your population educated to a higher standard than what is needed in daily life, than to only give that to those who are aware enough at a young age to actively seek said education
A^2 + B^2 = C^2 is known as the Pythagorean theorem. This theorem explains the proportionality of the 3 sides of a right triangle (a triangle with 1 corner angle = 90 degrees). If you know the length of 2 sides (in his example, the wall beams) you can find out the length of the third (in his example, this would be the supporting strut spanning the beams that meet at a 90 degree angle). If their example is explaining a beam that spans the room from 1 corner to the other, you still use this formula as a rectangle is 2 right triangles that meet along their hypotenuse (the longest leg of a right triangle, or the length you are solving for in this problem). The 2 known sides are the length/width of the room, and you solve for the 3rd side, your diagonal beam
You would use materials that perform completely fine at those temps. This could be anything from high nickel alloy steel, to Inconel, to an HEA (high entropy alloy). You can even do high heat resistant metals with ceramic coatings on the inside for protection if creating a passivation layer is too difficult for the application or the exposure environment does not allow for one to form.
There is an entire subsection of engineering studies focused on purely coaxing specific properties out of a material or developing materials to custom suit extreme applications, known as material science. They generally work very closely with chemical engineers (my background) and metallurgists in order to manufacture the designed product in either batch form, or in continuous fashion.
I work in a steel mill and we have Inconel furnace rolls that hang out in 1600 F heat 24/7 and are rated (iirc) to ~2300F max operation temp. For reference medium carbon steel melts between 2600 and 2800F, and loses a lot of its mechanical strength well before 2300F (I am trying to find a stress strain curve for carbon steel over multiple temperatures for reference. I will update if I find one)
Edit: Okay so I found one that does show what I am trying to convey. As you can see, the higher the temperature of the sample material, the lower the yield strength. Example: the 100C sample was strained to >25% before failure, while the 700C sample began to plastically deform (fail) before 10% strain. Take note of the second link, all the test temperatures are MUCH higher than any of the carbon steel samples
Carbon Steel Curve: https://www.researchgate.net/figure/Stress-strain-curves-at-different-temperatures-for-steel-4509-2_fig11_236341600
Inconel Curve: https://www.researchgate.net/figure/Stress-strain-curves-of-Inconel-625-alloy_fig11_338984803
Anyone I know who left our troop, did so early after transitioning from cub scouts to boy scouts. Most had other commitments that required most of their time (sports mostly), or they didn’t find it “cool”. I didn’t care if it was “cool” at school or not so that point never bothered me. I managed playing 2 year round sports along with scouts and clubs, but totally understand not wanting to make that commitment and deciding to drop scouts. I loved the camping trips, cool merit badges, and high adventure opportunities it provided (like Philmont Ranch).
You seem to have a very different perception of scouting (which obviously could come from the way your troop functioned vs. how my troop did for example), but my point is that you shouldn’t paint things with a broad brush. Again, I don’t share any of these same sentiments with you, but you speak like it’s absolute fact or that you know all intricacies of the situation. You simply do not, nor do I. I am sorry you had a poor experience.
To your last point. I just texted 2 people who left my troop (we are still friends) and brought forward what you said. Only 1 has responded so far and said “LOL, it had nothing to do with “facism” wtf. I just didn’t really love it so I didn’t want to keep putting time into it.” So again to my point of not painting things with a broad brush…not everyone shares your experience of “the young fascists club”. In general, sweeping generalizations result in indefensible positions. It’s easy to find flaw in absolutist statements about large groups
I’m not sure what troop you were in, but nobody I know had an experience like that in scouts. I loved scouts and highly suggest people get into it. Without scouting I would have never done many awesome things, and I straight up never would have gotten the chance to get into certain hobbies like snowboarding (my family does not ski), without taking merit badges like the snow sports merit badge. I learned how to scuba dive, I learned blacksmithing (awesome merit badge), it helped fuel my love of chemistry, and so SOOO much more. I’m not saying it’s all fine and dandy, there are bad people out there. However, painting scouts with a broad brush (or painting anything with a broad brush) is just wrong. It’s not representative of the entire group, nor of everyone’s experience with said group.
I would say scouting significantly built my leadership skills, I attended multiple leadership conferences and trainings, and my eagle scout award is a talking point in every interview. Along with many of the life long friends I made along the way, I highly recommend scouting to young children. You will be shocked the cool opportunities it can provide.
Finally, I’m not in any way sure what was fascist about anything we did in scouting? Outside of being respectful when performing flag ceremonies, very little national anything came up unless we took a trip to a military base to see refueling planes for example. I’d assume this highly depends on the troop and its leaders, but again this is not an across the board scouting thing. Every troop can be wildly different from the next as long as their bylaws fit within thr BSA rules
That is the second. The “first” was linus going on an unhinged rant and shirking blame on the LTT forums
Yeah, very sadly the chemical industry (and then by extension, manufacturing/maintenance as a whole) is rife with this shit. I hope and pray that young and aspiring chemists/chemical engineers/regulators/safety engineers/etc. will make changes in time that we take harder approaches to shit like this. We put the environment and people first, the “progress” of industry in a close second.
Regarding what you said about the old guys doing it how they used to. I see that all the time in my steel mill. Lots of older guys (and some younger ones who put off the too cool for school vibe) dont wear earplugs all the time. They havent for the last 20 years, so what is me telling them they will lose their hearing gonna do? They have done it this way, and will continue to do it this way. Luckily, we have had success in general improving our safety culture, but getting people to care about the unseen threats (particulate matter, hearing loss, exposure, etc.) can be very hard
To be exact, it is a wt% of the feedstock they are changing. Not the fuel itself. (I am not commenting on the fact that they likely would be exposed to combustion products/uncombusted products).
From a chemical perspective, it also chemically needs to be similiar to the original feedstock, or else you would not be producing the fuel you want in the correct ratios. These systems are a very complex system of multiple primary reactions + side chain reactions. They are not trying to reinvent the wheel here, they would want the system to behave as close to the same as possible so that they can just apply this in their existing plants.
IF (BIG IF) they can prove that the waste plastic feedstock does not change the output products of the combusted fuel (included non combusted products, or products of incomplete combustion), this could be a big win for making use of waste plastics, otherwise I have a very sick feeling that this is trending towards the next tetra-ethyl lead event
So I wanted to provide a bit of unique perspective here on the topic. I now work as a process engineer in a steel mill, but 2 of my previous positions were in product safety and regulatory compliance. I worked in US, CA, & MX regulatory law, as well as global compliance with countries outside of the Americas. In my position I had to deal with regulatory compliance with chemical lists (TSCA, ECHA, DSL/NDSL, ISHL, etc.) and I was responsible for creating and verifying the information we use to create our SDS sheets.
So a large part of people are stuck on the fact that there is a lot of redacted information in the paper, this could be for multiple reasons outside of protecting trade secrets. As I stated above, there are regulatory chemical lists. In many countries, it is entirely ILLEGAL to sell or use in manufacturing, any chemicals which do not appear on the list for the country in question. When a company wants to create a new chemical (which is happening all the time, this also can be a “mix” and not a defined exact molecule, ill speak more on this later) its is a very slow and long process of classifying the chemical, getting a CAS number assigned, and then getting this chemical listed on the regulatory lists of the locations you intend to use it/sell it. To get listed on these lists is a process in itself that includes providing absolutely as much information on the chemical as reasonably achievable. From my experience, ECHA (EU) has stricter rules than TSCA (U.S) for example, and not all lists are made equal, governed equally, or even list the same chemicals. So circling back, the feedstock listed in the paper is likely very early in this process or is in the middle of the process, meaning there is not an “official” name or means of identifying what is being spoken about, anything referred to in the paper would just be internal monikers/code names or possibly a nickname to describe it.
On the topic I said I would speak more about, “mixes” or “chemicals” without a defined chemistry. So there are feedstocks/chemicals/mixes of oils/paraffin materials/alkanes/etc. that are very hard to control the creation of, so they are created as an inseparable bulk mixture. Some Examples:
-Cas #: 85535-86-0 [C18-28 Chloroalkanes (20-50 %Cl)]
-Cas #: 97553-43-0 [Paraffins (petroleum), normal C > 10, chloro]
The “mixtures” are classified based on their properties and what is actually making up that mix defined within the certain Cas #. This is likely how all of the feedstocks in the paper would be classified. Based on certain plastics that are recycled you could expect X, Y, Z, defined blends.
Finally, regarding the safety aspect. Having been thrown into the world of chemical regulation (I am a chemical engineer by education, we covered the existence of TSCA in like one section of our safety course), I got to see first hand how almost “fly by the seat of your pants” it is. I cannot suggest a “better” way to more safely regulate these chemicals, other than to take an outright strict approach (which I am in favor of btw). Eu for example is much stricter (both health and environmental hazard wise) compared to the U.S. They have a higher burden of proof that the chemical is not harmful and an approach of “okay if it shows signs it could be a problem, classify it as such”, while it sure feels like the EPA takes the approach of “okay, lets see if you guys can keep this from becoming a problem.” Which companies have proved repeatedly, they cannot.
Fair enough! Jerboa currently functions similarly to baconreader (which is what I used to browse reddit) so it has been a very smooth transition. I might try out some of the other offerings over the next few months, but I doubt I will be clamoring or a switch until either I am not getting something I want from Jerboa, or someone tells me about a feature I would specifically like on another app
Do you mean read posts or read mail? If you mean posts, I actually wouldn’t like that feature (for me). I like being able to find a post I found funny or pull up info for someone else, and seeing that it WAS read is helpful there
Here I am on jerboa wondering why it barely gets mentioned lol. It was all that was available in the first wave of migration and im used to it now. Sorta how I ended up on baconreader. Someone told me to try it, I had not used a 3rd party app before then (reddit didnt even have one at the time, the one they have now is steaming trash) and I got used to it and never looked for another. Until Jerboa isn’t doing what I need/want or begins to have functionality problems, I dont feel a need to change
I’m confused what Republicans have to do with this point at all? That sorta came out of nowhere and doesnt pertain to anything stated in the article. In fact the article actually references Biden shutting down the railroad strike (I dont remember him being republican?).
Nobody is in government is here for you, regardless of the side. I don’t get why people politicize the shit out of literally everything or make it partisan.
The classic saying goes, “How do you know a politician is lying?”
“Their lips are moving.”
In general they want people fighting about party lines and what they make to be partisan politics. Why feed in?
I torrented and seeded many torrents (its still seeding right now) and it can do at least 2 (havent tried more) jellyfin streams at once as long as I disable server side transcoding to reserve resources. I had the full arr suite of apps running along with ombi (gonna move to jellyseer, but imo ombi used too much ram on my 4GB laptop to be something I kept running). Is it perfect? No, it has quirks that will come up now and again but can I really complain when getting now 16 years of use out of a laptop I never thought I’d touch again once I built my desktop?
Edit: oh be aware, if you’re using old hardware, DO NOT use the newest versions of things like Linux mint, it possibly won’t have drivers that works for really old hardware (like wifi card, Lan card, etc.) and it won’t be easily apparent sometimes. I solved this with a friend who had the same laptop as me but couldn’t get internet once installing mint. It turns out he used a newer version of mint that did not have a way to support his wifi card and installing and older version solved it