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
You can learn to create logic circuits in order to aid automation
I watch totally fine on my phone and pickup at home. It should sync to your log in account in my experience
That is the second. The “first” was linus going on an unhinged rant and shirking blame on the LTT forums
So me, using an ad blocker to prevent incorrectly vetted ads (that contain malware), stealing my information or compromising my computer, tracking my moves, or outright spying on what I say/type/consume is piracy? Then call me fucking Jack Sparrow baby
Maybe you are young, or incredibly naive (I am not trying to be offensive), but the internet used to be RIDDLED with unsafe ads. There is absolutely no reason you should ever believe they are safe now. Companies do very little to ensure their ads are safe as long as the money rolls in. Skype straight up served malware in their ads for years and never gave 1 fuck. (source: https://www.onmsft.com/news/skypes-traditional-desktop-program-is-spreading-malware-through-ads/)
Going on the internet without an adblocker (I suggest multiple layers, DNS level [Pihole/adguard] as well as device level [Extensions/browsers]) is like having unprotected sex with random strangers. Yes, you may end up fine, but you also could get some very nasty viruses (with long term damage, such as your SSN being leaked) all because you dont see the value in protection
Source that ads continue to be unsafe:
-https://www.komando.com/security-privacy/google-ad-scam-warning/847823/
And these are sponsored search results so that they appear first. You might think google should give a fuck about vetting those…but nope
edit: Spelling/grammar
Steve directly addresses your question in both his videos at some point. He states that he did this to avoid the company (he is not making this about Linus, he is directing this at the conglomerate that is LMG) attempting to muddy the timeline and impact the journalistic integrity of the piece. Low and behold, even without reaching out for comment, Linus did in fact attempt to muddy the timeline and undermine the legitimacy of the piece. So exactly what Steve feared happening, is exactly what LMG did, sadly
I have battled ADHD since second grade, been medicated and in therapy many times. I’m a successful chemical engineer now and I can promise you, that’s not an excuse for this behavior. I’m also by chance friends with multiple people with diagnosed ADHD, and not a single one of them acts this way when someone points out they are wrong.
So I’m not really fine with ADHD being used to explain shitty behavior. It’s not an excuse, ever
I straight up had the shocked Pikachu face when he said that. Being someone with a background in chemistry, I love the level of care GN puts into their testing. To have an LTT employeee be so fucking brazen with how they shit on someone WHO DOES IT RIGHT made me unsub right then and there. Linus’ reaction only made me feel even more secure in my choice.
Setup a jellyfin server, and then you can use custom CSS options to outright make jellyfin look and function like netflix.
Example: https://github.com/Automationxperts/jellyflix
There are many more options to completely customize the look and feel. Also you can do this system wide (meaning all clients get what you set up, or you can set it up per client since its just CSS)
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.
Sh.itjust.works is great. It’s exactly what the name says and that’s all I want from my instance lol
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
I just run a wireguard container on my raspberry pi 3b and use that to VPN onto my local network. Was super simple to set up