Great thread idea! (Here's an existing one for Ham >>2130 although not much in there).

Post edited on 19th Mar 2022, 11:30am

>>2646
Delay-tolerant networking is a proposed way of compensating for low bandwidth, such as in a typical meshnet.

https://datatracker.ietf.org/doc/html/draft-ietf-dtn-bpbis-31

I know of a local "hamwan" kind of project but because of the used 13/6cm frequencies you are required to have a license to use it. Would be cool to find/start a mesh network like these that anyone can join to, something like Freifunk for germans.

if the force is being constructed as a vector the negative sign simply indicates its direction.
the direction being down toward the earth.

>>6
But this isn't force, but potential energy.

As distance between the two planets increases, the potential energy should increase. But the equation dictates that the potential energy will simply approach zero from the negative side. Whys that?

Because it is supposed to be negative.

>This potential energy is more strongly negative than the total potential energy of the system of bodies as such since it also includes the negative gravitational binding energy of each body. The potential energy of the system of bodies as such is the negative of the energy needed to separate the bodies from each other to infinity, while the gravitational binding energy is the energy needed to separate all particles from each other to infinity.

It's a good question, the answer is that potential is always relative to a point of reference, and here we choose r = infinity to be the point at zero potential. Then since potential is just the negative integral of work done in bringing that point from infinity to zero, and the work done is positive (because we're going with the gravitation field, not against it), the potential energy is negative.

As for why we don't choose r = 0 to be the point of zero potential, I think it's because the law of gravitation isn't entirely accurate for small distances (since the force blows up to infinity there), and moreover for r=0 they'd need to occupy the same point in space anyway.

>>1025
That is an increase. It goes from more negative to less negative. Hence the delta is a positive increase.

Post edited on 13th May 2022, 9:04pm

>>2675
I would get a desktop. You can buy less RAM at first (then buy another identical stick of RAM) or you could get a CPU with integrated graphics and upgrade it later. Also using a HDD instead of a SSD is a good way to save some money. Don't save money by buying a cheap PSU. I recommend that you don't get a Nvidia GPU if you are planning on using GNU/Linux. Actually, Steam Deck uses GNU/Linux (SteamOS), so the experience with using another GNU/Linux distro (like Xubuntu) on a desktop isn't that much different if you don't need the extra portability. You could test first using GNU/Linux only and installing Wine/Steam, because Botnet 10/Botnet 11 costs money.

Also, even if you wanted more portability, I would get a laptop instead of Steam Deck. And remember that you need a screen and keyboard+mouse for your desktop computer, while a laptop already has those.

>I don't know how to change things on a desktop
You just need to look at the motherboard's manual and see where is slot X located and plug the part in. Watch a tutorial on YT before assembling your first PC. The only thing you can mess up is the CPU. You need to read the manual of the MoBo and CPU extra carefully.

can I get a good pc under 1000 bucks? If no should I geg a steam deck then

Post edited on 10th May 2022, 12:04pm

>>2696
>can I get a good pc under 1000 bucks
Sure. But you need to post some example software that you expect to run. Would using GNU/Linux be a deal breaker for you? The Steam Deck uses it and you should get the exact same software compatibility if you ran GNU/Linux on a desktop PC that you assembled yourself.

>If no should I geg a steam deck then
I'm worried about Deck's battery life and I personally think that a laptop would be better, if you want more portability. And, in my opinion, a desktop is better if you need more power. Do you have a screen for your desktop PC? If not, you need to take into account the cost of a screen if you are going to assemble a PC. If you don't have a screen, you could also use a TV as your screen, though.

The GPU matters than the CPU when it comes to video game performance.
I would get the cheapest ATX or EATX case that has dust filters. And I think that an AMD Ryzen 5 3600 or AMD Ryzen 5 5600 CPU is a good for the price. Note these models do not have integrated GPU. I would get G.Skill Ripjaws V, 16GB DDR4 3200MHz RAM sticks (Buy a package that has 2x8GB RAM sticks). I recommend getting a Western Digital or Toshiba HDD(s) instead of a SSD (this is a good way to save money). I don't know which motherboard you should get (I think getting a Asus or Msi MoBo that has AMD AM4 socket for the CPU is a good choice). I would get a Corsair or Seasonic PSU (there are PSU calculators online. I recommend getting a slightly better PSU than you need).

>>2697
I can provide the screen (one from 2007)

>>2685
This is good advice but let me present you another alternative if you've never coded anything at all. I'd say don't be afraid to pick up RPGMaker or GameMaker or similar engines, because it will provide you with easy accomplishments that you will desperately need to keep yourself motivated in the months and years to come. Imho nothing is more important on the long run than keeping yourself motivated, and even though they will have their own logic you will also learn programming by the general structure of conditionals and loops and such.

Afterwards you can get into "deeper" territory with easy languages like python libraries and such, Love2D is lua but it's quite popular too.

These posts so far have offered solid advice. Sooner or later though, if you're serious about games, C++ is kind of a must. C++ is the absolute, uncontested king of game dev.

edit: even Love is written in c++.

Post edited on 2nd May 2022, 12:34am

>>2684
I recommend you pick a high-level language at first. Since you are interested in game development, I recommend you pick Lua. Lua can be used for scripting in your future game projects (for example Gmod uses it), and you can use Love 2D to make 2D games in Lua.
>https://www.lua.org/pil/contents.html

After Lua, you may want to learn C++, I guess? If so, read PPP2.

>>2684
I think it kinda depends on how driven / motivated you are, really.
As >>2686 said, if you're a total beginner not knowing how you feel about programming I would say just look into things in a casual way where you can choose what you want to look more deeply into and whether it's for you or not.

If you already decided you want to dedicate a solid amount of time I would recommend https://java-programming.mooc.fi/part-1
Yeah okay it's Java but the course is really well structured and gives a lot of exercises you can submit which will give you a really solid foundation with a lot of concepts that will be relevant in pretty much any programming language.
When you have key concepts down it mostly just comes down to syntax / quirks of different languages that need to be learned.

I'd be a bit wary about the above if you aren't already feeling dedicated because honestly it will probably kill your motivation, I just found it useful when I was in that stage of kinda intermediate beginner wanting to know more without wanting to delve into books too much back then

>>2567
Nah. The problem seems more likely to be related to drivers and hardware acceleration. I didn't have Mesa-32bit installed.

After I installed that, it would immediately crash and give some sort of registry error I can't understand in the slightest. It's possible on real hardware this wouldn't be an issue.

Maaaaybe, proton would somehow rectify this, but I don't even feel like trying. This was on void linux.

>>2568
Wine 7 is out. Any improvement using this newest release?

>>2564
You're making life a lot more difficult than it needs to be
Just use Bottles, it's on Flathub
Basically a wrapper for handling wineprefixes at its core with a bunch of other useful features
Since I moved my desktop back to Linux a few weeks back I've been using it and have had basically no issues running VNs with it
The only real issue that you can't handle through the GUI in terms of dependencies is Windows fonts, but if you just grab those somewhere yourself and dump them into the wineprefix I've had good success with a lot of things just running out of the box

>>2680
For context, that was my experience using wine in a void virtual machine. Since then, I've learned there's a big difference between a real gpu and virtualized one. I've also started using vmware instead of vbox, which has been quite the improvement.

I haven't tried cavestory in wine again, but nxengine works easily. And following this(admittedly lengthy) guide https://learnjapanese.moe/vn-linux/ (minus the lutris steps) has led to good results with visual novels, even in a vmware virtual machine(kubuntu).

I haven't seen a case where Bottles would improve things. Just using the same prefix for everything seems better to me.

>>2553
>Why are you saging and being cagey? It comes across as elitist.
One sages when his post isn't pertinent to a thread's topic, or his post is unsubstantiated. It has nothing to do with being cagey, nor should you infer it as elitist behavior.

>I guess you could argue they don't really teach.
They don't teach well, because if they did, homework wouldn't be assigned. Instead, it would be optional. I agree on this point. My original posts pertained to those paid services and their userbase.

>>2556
Unrelated but it's disappointing that people (read: the current crop of users from 4chan) have forgotten sage etiquette and treat a sage as some sort of mark of disapproval.

>>2557
Whether properly or not, most of those users don't use sage. Some even improperly state it's not enabled on 4chan, and that was years ago. I'm sure it's gotten worse.

>>2728
>Some even improperly state it's not enabled on 4chan, and that was years ago. I'm sure it's gotten worse.
I guess that only means no one ever read the rules. I checked again and to my surprise it even mentions the proper intended usage (I don't know if that addendum was always there)
>What is "sage"? Entering "sage" (by itself) into the [Options] field while replying will cause the thread not to bump to the top of the page. Contrary to popular belief, a sage is not a downvote, and should not be used as one. "sage-bombing" or announcing that you've saged a thread may result in a ban.

>>2429
It's a model of one.

Our simple classical physics laws have already been proven to be mere approximations of more complex ones. Who knows if we're not a model of some much more complex universe?

nothing

Did you know that churches don't even need to apply for tax exemption in the United States?

It is an interesting idea. Maybe it would be possible to make a religion out of it. For example, one could say this 'simulation' is filled with secret rules and codes of behaviour that the simulation favours or disfavours, one could use real statistics and skew them or even just make statistics up and so they could say something like '70% of people that took their hat off in the presence of a cow have had an unexpected and unrelated, highly beneficial event occur in their lives that could not be explained whereas 67% of people that have urinated on a cow have died of an unnatural and unrelated death that cannot be explained either, therefore there is a secret code in the simulation where if you take your hat of to a cow you are blessed but if you pee on one you will likely die'.

>>2048
Hey that's pretty good!

I'll be updating to Windows 10 soon so thanks OP.

Off-topic, but I don't want to make a new thread.
On windows, you can't tag gif and png files by default. This program fixes that by adding metadata to whatever file types you want(which are supported I guess).
https://github.com/Dijji/FileMeta

Simplewall is a lifesaver. Haven't had to update for a while.

>>2310
Quanta magazine is the gold standard of understandable reporting in physics/math. Here's their explanation of time crystals
https://www.quantamagazine.org/perpetual-motion-test-could-amend-theory-of-time-20130425/

>>2311
I think about this a lot. The half-baked rationalization I am most satisfied with for the moment is that mathematics is so successful at describing the world since it is an enormous repository of arguments; while it may not be the case that every mathematical argument is relevant to real-world phenomena, we are forced to turn to mathematics to find means of concretely describing and articulating what we observe about physical reality. Now that I write it out, though, this revelation seems pretty vacuous.

In any case, yes, it is very interesting that a handful of axioms consistent with how we understand the world could bear so much fruit.

>>2313
"The Unreasonable Effectiveness of Mathematics in the Natural Sciences" seems relevant

No. The theories of mathematicians don't bother me at all.

>>2217
My dad has that chair. It leans back too much for my taste. I like sitting closer to the edge of my seat, so that sloping feeling annoys me.

Post edited on 17th Mar 2021, 6:55am

>>2217
(According to reverse image search that's Staples Hyken).
>>2216
You can actually get the higher-end ones for quite cheap used. For instance, you can get Aerons for $250-$350 if you hunt around a bit. And considering that they last 20 years or so and are designed to be repairable it doesn't seem too outrageous. But I don't know if the Aerons are actually as comfortable as people say they are or they're just overhyped placebos.
>>2218
There's probably a way to adjust recline tension

>>2220
Yes, it's Staples Hyken. Sorry for not specifying that.
And yes, you can adjust the recline angle as well as "disable" it completely to allow for it to be similar to a rocking chair.

I was able to test a bunch of chairs in my quest to buy a comfortable one. Here are some quick thoughts, in case it might help anyone else:

* Steelcase Leap V2: A bit overrated in my opinion, I felt "boxed in" by the seat (especially the way the sides sort of curve slightly inwards like a bucket racing seat). It just felt overengineered and heavy, but a lot of people seem to like these so your mileage may vary.

* Think V1: A lot lighter than the v2, and an interesting hybrid between mesh and foam seat/back where they suspend a thin piece of foam on a bunch of metal wires that can flex to mold to your body. But in practice the seat felt pretty uncomfortable, there was almost no lumbar support 9even with their adjustable plastic contraption), and there was no way to set recline tension. I feel like there's a weight threshold to get the metal wires to actually bend, and I guess I was below that cutoff (I guesstimate you need to be > 140 ish)

* Haworth Zody: Currently trying this, I like the mesh back and its lightweight feel. It doesn't have any fancy gizmos like the other two steelcase chairs, it's just a solidly designed chair with all the things you would expect.

Note that the one chair I didn't have the chance to try was the much-hyped Aeron, although I think the hard plastic edges of the mesh seat would have been an instant dealbreaker.

If you're shopping for chairs, it would behoove you to try to find a ushed/refurbished furniture dealer nearby. Depending on your location (rural or urban) this might be easier said than done, but you can usually get chairs from liquidation places or office closing sales for a fraction of their original cost. This guy's [1] reviews of various chairs were also very helpful in identifying things to look for.

[1] https://blog.szynalski.com/archive/

>>2293
>>2294
I don't get the appeal.

>>2293
If you're on a hidpi screen antialiasing is unnecessary anyway. osx disabled it a few versions back

Post edited on 29th May 2021, 12:41pm

>>2295
It also looks slightly better on a CRT, if you're running one for some reason.

>>2296
>osx disabled it a few versions back
Didn't they disable only subpixel AA (keeping grayscale by default)?

>>2373
>keeping grayscale
yeah you're right, my bad. When I played around with subpixel vs grayscale only, the only noticeable difference on the hidpi screen was that with grayscale-only aa, fonts were a bit thinner.

Post edited on 9th Aug 2021, 3:52pm