#electron's excellents

[unorcadox]

Minotauros took a strange amount of heartache for an instrumental song. The title really says it all here, it's about being trapped. In the latter half, it just kind of explodes into a tinny, distorted, maximalist mess. The melody cries out, repeating itself until it's gone hoarse.

[todayisafridaynight]

snappo what kind of music do you like

oh i like any kind of music i wont be mad bout anythin put on the radio :) my usual go-to genres tho are like .... rock, metal, and eletronic music...

[kendallwa]

https://www.instagram.com/tv/CxgZPYzOpg-/?igshid=NTc4MTIwNjQ2YQ==

Refresh - “What’s a Terrorist Look Like” 2011.

This song was released on SoundCloud back in the day. It’s about stereotypes and how people love to imagine threats, and how dangerous that can be. The most dangerous people may not look how you imagine them to look (i.e. black & brown). ✌🏽

#poetry #art #music #blackhair #hiphop #spokenword #blackexcellence #electronicmusic #housemusic #fashion

[mallu2005]

BPL COFFEE MAKER BDCMD0016C with 750 W(Capacity: 720 ml)

The BPL Coffee Maker BDCMD0016C is a powerful and convenient coffee maker that boasts a 750W motor and a capacity of 720ml, making it perfect for brewing coffee for small to medium-sized groups. With its digital display and timer, you can easily program your coffee to brew at the perfect time.

The coffee maker also features boil-dry protection, a removable filter for easy cleaning, and programmable brewing options. Additionally, you can customize your brewing time with the timer settings. Designed to make coffee brewing easy and fast, this coffee maker fits perfectly in any modern kitchen with its sleek design.

[mainfaggot]

CONTENDER FOR BG BSIDE OF THE SUMMERRRRRRR (zay mainfaggot awards)

[simply-sithel]

Good fortune (and friends) allowed me to catch this at the Roxie the other week! 'Twas just a fellow renting out the screen for a single showing of his work, charging $3.00 for admission as if it were a train ride.

The enthusiasm and love from the crowd warmed my heart and made it a wonderful viewing experience. Seemed like many knew the filmmaker (though I didn't) and I was (eventually) thrilled to find that the guy whispering behind me throughout the film was an ex-BART operator sharing lore and decked out in full operator uniform. People clapped as the train pulled into their home stations and there was the gentle sounds of audience approval at various points through the film/interview voice overs.

I wouldn't really call myself a "transit nerd" but I am grateful for transit infrastructure and I really enjoyed the positive spin put on the film. Feel good easy watching. Jump to the ~32:45 mark to leave Embarcadero & witness the Transbay Tube.

[avalontec]

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[cylexplastics]

PVDF material: excellent performance and wide application

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[sirtbhopal]

Kudos to Omskand Mani Giri for Clearing the NPTEL IoT Course with Excellence-SIRT Bhopal

Heartiest Congratulations to Omskand Mani Giri from the SIRT EC Department👏👏 He completed the NPTEL Certification Course on Introduction to IoT with an impressive score of 63%!

[jcmarchi]

Smart handling of neutrons is crucial to fusion power success

New Post has been published on https://thedigitalinsider.com/smart-handling-of-neutrons-is-crucial-to-fusion-power-success/

Smart handling of neutrons is crucial to fusion power success

In fall 2009, when Ethan Peterson ’13 arrived at MIT as an undergraduate, he already had some ideas about possible career options. He’d always liked building things, even as a child, so he imagined his future work would involve engineering of some sort. He also liked physics. And he’d recently become intent on reducing our dependence on fossil fuels and simultaneously curbing greenhouse gas emissions, which made him consider studying solar and wind energy, among other renewable sources.

Things crystallized for him in the spring semester of 2010, when he took an introductory course on nuclear fusion, taught by Anne White, during which he discovered that when a deuterium nucleus and a tritium nucleus combine to produce a helium nucleus, an energetic (14 mega electron volt) neutron — traveling at one-sixth the speed of light — is released. Moreover, 1020 (100 billion billion) of these neutrons would be produced every second that a 500-megawatt fusion power plant operates. “It was eye-opening for me to learn just how energy-dense the fusion process is,” says Peterson, who became the Class of 1956 Career Development Professor of nuclear science and engineering in July 2024. “I was struck by the richness and interdisciplinary nature of the fusion field. This was an engineering discipline where I could apply physics to solve a real-world problem in a way that was both interesting and beautiful.”

He soon became a physics and nuclear engineering double major, and by the time he graduated from MIT in 2013, the U.S. Department of Energy (DoE) had already decided to cut funding for MIT’s Alcator C-Mod fusion project. In view of that facility’s impending closure, Peterson opted to pursue graduate studies at the University of Wisconsin. There, he acquired a basic science background in plasma physics, which is central not only to nuclear fusion but also to astrophysical phenomena such as the solar wind.

When Peterson received his PhD from Wisconsin in 2019, nuclear fusion had rebounded at MIT with the launch, a year earlier, of the SPARC project — a collaborative effort being carried out with the newly founded MIT spinout Commonwealth Fusion Systems. He returned to his alma mater as a postdoc and then a research scientist in the Plasma Science and Fusion Center, taking his time, at first, to figure out how to best make his mark in the field.

Minding your neutrons

Around that time, Peterson was participating in a community planning process, sponsored by the DoE, that focused on critical gaps that needed to be closed for a successful fusion program. In the course of these discussions, he came to realize that inadequate attention had been paid to the handling of neutrons, which carry 80 percent of the energy coming out of a fusion reaction — energy that needs to be harnessed for electrical generation. However, these neutrons are so energetic that they can penetrate through many tens of centimeters of material, potentially undermining the structural integrity of components and damaging vital equipment such as superconducting magnets. Shielding is also essential for protecting humans from harmful radiation.

One goal, Peterson says, is to minimize the number of neutrons that escape and, in so doing, to reduce the amount of lost energy. A complementary objective, he adds, “is to get neutrons to deposit heat where you want them to and to stop them from depositing heat where you don’t want them to.” These considerations, in turn, can have a profound influence on fusion reactor design. This branch of nuclear engineering, called neutronics — which analyzes where neutrons are created and where they end up going — has become Peterson’s specialty.

It was never a high-profile area of research in the fusion community — as plasma physics, for example, has always garnered more of the spotlight and more of the funding. That’s exactly why Peterson has stepped up. “The impacts of neutrons on fusion reactor design haven’t been a high priority for a long time,” he says. “I felt that some initiative needed to be taken,” and that prompted him to make the switch from plasma physics to neutronics. It has been his principal focus ever since — as a postdoc, a research scientist, and now as a faculty member.

A code to design by

The best way to get a neutron to transfer its energy is to make it collide with a light atom. Lithium, with an atomic number of three, or lithium-containing materials are normally good choices — and necessary for producing tritium fuel. The placement of lithium “blankets,” which are intended to absorb energy from neutrons and produce tritium, “is a critical part of the design of fusion reactors,” Peterson says. High-density materials, such as lead and tungsten, can be used, conversely, to block the passage of neutrons and other types of radiation. “You might want to layer these high- and low-density materials in a complicated way that isn’t immediately intuitive” he adds. Determining which materials to put where — and of what thickness and mass — amounts to a tricky optimization problem, which will affect the size, cost, and efficiency of a fusion power plant.

To that end, Peterson has developed modelling tools that can make analyses of these sorts easier and faster, thereby facilitating the design process. “This has traditionally been the step that takes the longest time and causes the biggest holdups,” he says. The models and algorithms that he and his colleagues are devising are general enough, moreover, to be compatible with a diverse range of fusion power plant concepts, including those that use magnets or lasers to confine the plasma.

Now that he’s become a professor, Peterson is in a position to introduce more people to nuclear engineering, and to neutronics in particular. “I love teaching and mentoring students, sharing the things I’m excited about,” he says. “I was inspired by all the professors I had in physics and nuclear engineering at MIT, and I hope to give back to the community in the same way.”

He also believes that if you are going to work on fusion, there is no better place to be than MIT, “where the facilities are second-to-none. People here are extremely innovative and passionate. And the sheer number of people who excel in their fields is staggering.” Great ideas can sometimes be sparked by off-the-cuff conversations in the hallway — something that happens more frequently than you expect, Peterson remarks. “All of these things taken together makes MIT a very special place.”

[zerovapes]

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[crispyeagleenthusiast]

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[kendallwa]

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[mallu2005]

Bluetooth Wireless Recording Condenser Handheld Microphone Bluetooth Speaker Audio Recording Karaoke with MIC

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[absentlyabbie]

seriously, though. i work in higher education, and part of my job is students sending me transcripts. you'd think the ones who have the least idea how to actually do that would be the older ones, and while sure, they definitely struggle with it, i see it most with the younger students. the teens to early 20s crowd.

very, astonishingly often, they don't know how to work with .pdf documents. i get garbage phone screenshots, sometimes inserted into an excel or word file for who knows what reason, but most often it's just a raw .jpg or other image file.

they definitely either don't know how to use a scanner, don't have access to one, or don't even know where they might go for that (staples and other office supply stores sometimes still have these services, but public libraries always have your back, kids.) so when they have a paper transcript and need to send me a copy electronically, it's just terrible photos at bad angles full of thumbs and text-obscuring shadows.

mind bogglingly frequently, i get cell phone photos of computer screens. they don't know how to take a screenshot on a computer. they don't know the function of the Print Screen button on the keyboard. they don't know how to right click a web page, hit "print", and choose "save as PDF" to produce a full and unbroken capture of the entirety of a webpage.

sometimes they'll just copy the text of a transcript and paste it right into the message of an email. that's if they figure out the difference between the body text portion of the email and the subject line, because quite frankly they often don't.

these are people who in most cases have done at least some college work already, but they have absolutely no clue how to utilize the attachment function in an email, and for some reason they don't consider they could google very quickly for instructions or even videos.

i am not taking a shit on gen z/gen alpha here, i'm really not.

what i am is aghast that they've been so massively failed on so many levels. the education system assumed they were "native" to technology and needed to be taught nothing. their parents assumed the same, or assumed the schools would teach them, or don't know how themselves and are too intimidated to figure it out and teach their kids these skills at home.

they spend hours a day on instagram and tiktok and youtube and etc, so they surely know (this is ridiculous to assume!!!) how to draft a formal email and format the text and what part goes where and what all those damn little symbols means, right? SURELY they're already familiar with every file type under the sun and know how to make use of whatever's salient in a pinch, right???

THEY MUST CERTAINLY know, innately, as one knows how to inhale, how to type in business formatting and formal communication style, how to present themselves in a way that gets them taken seriously by formal institutions, how to appear and be competent in basic/standard digital skills. SURELY. Of course. RIGHT!!!!

it's MADDENING, it's insane, and it's frustrating from the receiving end, but even more frustrating knowing they're stumbling blind out there in the digital spaces of grown-up matters, being dismissed, being considered less intelligent, being talked down to, because every adult and system responsible for them just

ASSUMED they should "just know" or "just figure out" these important things no one ever bothered to teach them, or half the time even introduce the concepts of before asking them to do it, on the spot, with high educational or professional stakes.

kids shouldn't have to supplement their own education like this and get sneered and scoffed at if they don't.

[communistkenobi]

sorry I know I’m being extremely annoying right now but the claim that the electronic calculator ‘did not forcibly pervade every aspect of our lives’ is so boldly and confidently wrong it’s impressive. the ability to automate the act of quantification (ie what an electronic calculator does) is probably as central to modern commerce and society as like, the transistor or the lightbulb. a world where excel spreadsheets do not exist is a fundamentally alien one to most people on planet earth. all geospatial software is built on the ability to do math on the fly. can you imagine the world today without google maps? can you even begin to comprehend a society not dominated by numbers? even these examples undersell how fundamental automated calculations are because this technology did in fact pervade every aspect of life. the fact that you think a calculator is simply a plastic doohickey you were taught to use in grade nine math is maliciously literal. like these arguments are so nakedly and openly anti-intellectual that I would say it makes it clear that no one should take you seriously, but posting this kind of mind-numbing slop is one of the easiest ways to do numbers on tumblr right now, which is something you also wouldn’t be able to do without the invention of an electronic calculator