[-] lightingnerd@lemmy.world 3 points 1 year ago* (last edited 1 year ago)

Solving this problem is easy, if A or D were correct, P = 0.5, if C or B were correct P = 0.25, since A and D require P = 0.25, and since C and B require P = 0 or 0.5 respectively, there is no correct solution that can be given, therefore the solution is "Undefined".

Anyway, have a good troll!

[-] lightingnerd@lemmy.world 5 points 1 year ago

I use LibreOffice! Calc, Draw, and Writer are very user friendly once you get used to where the tools are. Impress is a pretty good replacement for Powerpoint: the stock graphics leave a lot to be desired--but that's a simple fix with a good stock image service. About the only thing LO doesn't do is notes, but I'd check out Xournal++ if you were looking for a way to replace OneNote. Plus, LibreOffice doesn't push OneDrive down your throat. It's been a win-win for me.

Another thing to consider if you really like typesetting is to learn LaTeX: it's a slightly steep learning curve(especially for advanced topics), but it'll do things that your typical WYSIWYG word-processing suite couldn't dream of doing. Plus there are a lot of templates available that you can adapt for your purposes.

[-] lightingnerd@lemmy.world 5 points 1 year ago

Yep, and the best way to make sure these places keep going is to contribute!

Also, if you can, consider donating to instance/server hosts and developers.

[-] lightingnerd@lemmy.world 3 points 1 year ago

Not to mention the periodic spore clouds, haha! It would be really cool if it were possible though!

I wonder if it would be possible to get some radiotrophic fungi to absorb IR and UV, so they could functionally act as a thermal barrier, cooling during the summer and heating during the winter...

https://en.wikipedia.org/wiki/Radiotrophic_fungus

21
submitted 1 year ago* (last edited 1 year ago) by lightingnerd@lemmy.world to c/mycology@mander.xyz

Day 4 of growing Pleurotus ostreatus cultures from spore. Only one plate got contaminated, but it was bad. There are two contaminant fungi going to battle, and around three possible bacterial colonies. I must have been losing it at the end, haha! Can't wait to see how they progress!

[-] lightingnerd@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

True, it's always good to verify with academic articles. I'd never trust ChatGPT without also verifying with sources--if for no other reason than its training dataset was cutoff in 2021. It's generally good to seek out research that is less than 3-5 years old when possible, due to how quickly the scientific landscape changes. According to this particular article from 2019, ChatGPT's response was pretty accurate.

https://onlinelibrary.wiley.com/doi/full/10.1002/ejlt.201900101

[-] lightingnerd@lemmy.world 4 points 1 year ago

I love this thing that people forget about open source. Like the whole FreeCAD community, there's a whole group of people who don't even use the vanilla UI--because they don't have to, haha! Of course, it does take skill, but if you're skilled enough to make pull request...

[-] lightingnerd@lemmy.world 28 points 1 year ago

Yeah, I'm a Reddit refugee, and I heard a bunch of people complaining about there being no "centralized login", and I'm like--bruh, that's WHY WE MOVED HERE, lmao!

[-] lightingnerd@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

Thanks for the recommendation, I just finished watching it--and yeah that speaks volumes (quite literally, haha!). I love how they started off the episode with a very fluent mixture of non-English and a few English phrases.

I should really go back and revisit TNG! I remember watching it as a kid, but now that I have a few decades under my belt, I've gone back and watched a few episodes: and it really is packed with amazing philosophy and social commentary.

7

From the left to the right (in the attached photo): two jars of Pleurotus ostreatus spores (now mycelium) growing in grain, two jars of P. ostreatus liquid culture cloned from agar, and two jars of Pleurotus pulmonarius liquid culture cloned from agar.

I also have five agar plates I inoculated with a different collection of P. ostreatus spores, but there's no visible growth yet--so I'll leave those out.

The P. pulmonarius was cloned from a fruiting body growing on a commercial grower's spent block that was salvaged from their waste pile. It's actually a pretty happy, and fast-growing variety. It seems that it hasn't reached senescence yet.

The P. ostreatus LC was cloned from a several-generations old sample that was initially from a liquid culture bought through amazon. It hasn't performed super well--which is why I've taken it to spore in two different experiments. I may end up disposing of this LC, but I'll probably store it in the fridge while I work on isolating some new strains from the spore experiments. Hopefully I'll win the P. ostreatus lottery...

All of this is just done in a simple Still Air Box, it's just a hobby for now. Some day I want to assemble a proper lab with a FFU/LFH, but that day is not today!

Anyone else culturing anything fun?

[-] lightingnerd@lemmy.world 2 points 1 year ago

Indeed, indeed! Diversity is one of the strongest traits of human life (and life in-general).

I don't recall that episode, I'll have to go watch it!

[-] lightingnerd@lemmy.world 3 points 1 year ago

Oh that's a really great method! I used to know a guy with ASD who did kind-of the inverse, he was super familiar with reading (specifically the bible), but he had a hard time with conversations. So he learned how to use the bible as a medium to conduct conversation.

Really, really cool discussions were born from that, and by the time I met him, he was almost independently conducting conversation, only going back to certain bible references when he got stuck or he needed to borrow a story or metaphor.

[-] lightingnerd@lemmy.world 6 points 1 year ago

Yeah, definitely an ADD/Attention-Processing issue. I used to read a lot as a kid, and after a head injury that aggravated my ADD and years of reading and talking in short-form messages (SMS, twitter, etc), it took me FOREVER to re-learn the skill of reading long-form text.

Luckily, with practice comes mastery, I was able to regain my abilities to read, and I'm currently working on a few textbooks and two casual books. It's still a struggle in distracting environments (loud children, hospitals, etc), but it's getting better the more I read.

[-] lightingnerd@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

Oh that is very interesting! I guess the main way that they decompose is through PHA depolymerase--according to ChatGPT a lot of the species that have been tested in the decomposition of PHA are bacteria. It would be interesting to try inoculating some samples of PHA with different mushroom species as well. It would be really great if PHA could be fully-decomposed into proper food-safe compost.

24
Torsion Hinge Box (lemmy.world)

I hope the 3D Printing community welcomes other CNC tools. This is a project I made on my custom-built laser table, utilizing "Living Hinges" aka "Torsion Lattice Hinges". They're a really neat mechanism that allows for a variety of different arrays or "lattices" of shapes that facilitate bending--and of-course these can also be created with an FDM printer as well!

This particular lattice is a simple design, cut into a 5mm plywood, and the divisions are all 2mm. Due to the length of the torsion pattern and the space between adjacent parts, the lattice featured in this box is actually quite flexible--it's capable of about 180 degrees rotation before risking damage, so for a beveled corner, it works quite well!

Another cool thing about these lattices is that they are essentially springs! My next project is going to implement a shorter lattice that instead of bending perpendicular to the lattice's plane, will act as a spring along the horizontal axis of the plane. The forces won't be torquing around the vertical columns of the lattice, but rather pressing those columns until the gaps close, so the torque will be along vectors perpendicular to the lattice plane near the thicker connecting regions.

Over all these are really useful designs, and due to the near infinite ways they can be designed, they can both deform in very unique ways, and also scatter light in very unique ways.

Hope this has inspired some of you to explore these really cool mechanisms in your own work; and if you have used these before, let me know in the comments!

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lightingnerd

joined 1 year ago