Kalcifer
@Kalcifer@sh.itjust.works
- Comment on Why don't we just gather up all the ocean's trash and all the nonrecyclables, put them in a rocket, and launch it into the sun? 1 week ago:
- Comment on Lemmy should have a community called lemmy_guess 1 week ago:
Roasting community?
- Comment on Lemmy should have a community called lemmy_guess 1 week ago:
Lemmy_at_em rolls off the tongue better, imo.
- Comment on Pressure vs Temp 2 weeks ago:
Duck science.
- Comment on Regain Control in my ass 2 months ago:
Metaverse in my ass.
- Comment on Why 🤷♂️ do users 👨💻 dislike 👎 the use ✅ of emojis 😀 on Lemmy 🐭? 2 months ago:
I don’t have any fundamental issue with emojis when they’re used to expand meaning or provide clarity. Eg you could use an emotive emoji to show/clarify the intent/emotion of something. Imo, using emojis in this way is no different than the practice of adding a “/s” to denote sarcasm. When they get annoying is when they’re used superfluously. If they serve no purpose, then it’s just clutter.
- Comment on 16GB of RAM Could Be the New Minimum in Apple's Upcoming M4 Macs 2 months ago:
I only just upgraded from 8GB to 16GB like 2 months ago.
- Comment on Lemmy being used as a source now 2 months ago:
When I use a link as a source, at the time that I access it for information I will also save a snapshot of it in the Wayback Machine. Ofc theres no guarantee that the Internet Archive will be able to survive, but the likelihood of that is probably far greater than some random website.
- Comment on Lemmy being used as a source now 2 months ago:
gestures passionately “Download Lemmy!”
I’m feeling warm and fuzzy for some reason.
- Comment on What devices should i look for to get a -30V power supply. 2 months ago:
The current direction didn’t change from the PSU perspective, only from the load.
You are absolutely right. I don’t know why I was thinking the direction changed.
- Comment on Higgs Field 2 months ago:
The Higgs mechanism gives mass to elementary particles. That is not to say that the total of inertial mass of a non-elementary massive object is due to the Higgs.
- Comment on Higgs Field 2 months ago:
To make it as simple as possible
Too simple, imo. It simplifies to the point of becoming incorrect.
Higgs makes it hard to push something.
One is called inertial mass (what we feel due to the Higgs mechanism)
The Higgs mechanism has been found to give mass to elementary particles only (short of neutrinos) [3]. This is important to note, as the mass of hadrons is far larger than the sum of their constituent elementary particles [4]. The rest, and vast majority, is found in the bound energy (eg the Strong Interaction) of the elementary particles (eg quarks) [1][2].
Regarding “Inertial mass”, I want to note the following definition for clarity:
Inertial mass is a measure of an object’s resistance to acceleration when a force is applied. [5]
References
1. D H. “Relation between binding energy and inertial mass”. Physics Forums. Published: 2012-07-08T01:12 (Accessed: 2024-08-13T05:39Z). www.physicsforums.com/threads/…/post-3987273. > It’s not the Higgs field. The Higgs gives elementary particles their masses. The strong interaction gives protons and neutrons their masses. There is a whole lot of energy bound up in those protons and neutrons. That’s why protons and neutrons are considerably more massive than than the sum of the masses of the quarks that form them. 2. “Why we can take for granted that energy binding is associated with inertial mass?”. Davius. Physics StackExchange. Published: 2023-05-17T10:07:08Z (Accessed: 2024-08-13T05:44Z). …stackexchange.com/…/why-we-can-take-for-granted-… > QCD energy binding (associated to a “cloud” of gluons joining together the three quarks) is responsible for the 99% of the inertial mass of a proton. 3. SuperCiocia. “Which particles does the Higgs Field give mass to?”. Physics StackExchange. Published: 2020-08-04T03:33:37Z (Accessed: 2024-08-13T06:08Z). …stackexchange.com/…/which-particles-does-the-hig…. > the Higgs field is responsible for the masses of all the elementary particles (including the Higgs boson) short of neutrinos. 4. Viktor T. Toth. “How is the strong nuclear force responsible for over 90% of mass?”. Quora. Published: 2021-05-02 (Accessed: 2024-08-13T06:26Z). quora.com/How-is-the-strong-nuclear-force-respons…. > Actually, it’s closer to 99% when it comes to protons and neutrons. Only about 1% of their masses come from the up and down quarks; the rest is binding energy. 5. “Mass”. Wikipedia. Accessed: 2024-08-13T06:34Z. en.wikipedia.org/wiki/Mass#Definitions
Higgs makes it hard to push something. Gravity makes it hard to lift something.
The Higgs interaction contributes to both. Mass due to the Higgs interaction is a component of inertial mass, given that the Higgs boson gives mass the elementary particles contained within [3]. Inertial mass is a measure of an objects inertia (ie its resistance to acceleration when a force is applied) [1][2].
Note that the concept of “lifting” only applies in a gravitational field when a force is able to be created by pushing off of a surface — the resistance to the “lift” being created by the objects weight. If one is in free-fall, for example, the effects of gravity are no longer apparent given that one has no reference to the fact that they are falling.
References
1. “Inertia”. Wikipedia. Accessed: 2024-08-13T06:43Z. en.wikipedia.org/wiki/Inertia > Inertia is the tendency of objects in motion to stay in motion and objects at rest to stay at rest, unless a force causes its speed or direction to change. 2. “Mass”. Wikipedia. Accessed: 2024-08-13T06:44Z. en.wikipedia.org/wiki/Mass#Definitions. > Inertial mass is a measure of an object’s resistance to acceleration when a force is applied. 3. D H. “Relation between binding energy and inertial mass”. Physics Forums. Published: 2012-07-08T01:12 (Accessed: 2024-08-13T06:46Z). www.physicsforums.com/threads/…/post-3987273. > The Higgs gives elementary particles their masses.
the other is called gravitational mass (what we feel due to gravitational attraction between two masses).
I’m not sure exactly what you are trying to say here, but I suspect you are perhaps referring to the following excerpt(s) from Wikipedia:
Active gravitational mass is a measure of the strength of an object’s gravitational flux [1]
Passive gravitational mass is a measure of the strength of an object’s interaction with a gravitational field. [1]
I’ve personally never heard the term “gravitational mass” before, but it could be found from the above two statements, or more succinctly stated:
Gravitational mass is the “m” in F = GmM/r2 (Newton’s law of universal gravitation) [2]
References
1. “Mass”. Wikipedia. Accessed: 2024-08-13T06:54Z. en.wikipedia.org/wiki/Mass#Definitions. 2. starkeffect. “Can someone explain to me how inertial mass and gravitational mass are the same and what this means outside the classroom?”. AskPhysics. Reddit. Published: 2023-09-24T22:59:20Z (Accessed: 2024-08-13T07:00Z). www.reddit.com/r/AskPhysics/comments/…/k228dew/
They are usually the same so the distinction is usually ignored.
This statement is rather dubious. Simply put, there has simply not been found any empirical difference between inertial mass and gravitational mass. [1]
References
1. “Eötvös experiment”. Wikipedia. Accessed: 2024-08-13T07:07Z. en.wikipedia.org/wiki/Eötvös_experiment
- Comment on Higgs Field 2 months ago:
These terms get a little convoluted for me as my knowledge of them is far from well established. I don’t really want to get into what the actual “Higgs field” is, but, for the sake of the meme, the following excerpt from Wikipedia should suffice:
via the Higgs mechanism, [the Higgs boson] gives a rest mass to all massive elementary particles of the Standard Model, including the Higgs boson itself. [source]
- Comment on Higgs Field 2 months ago:
I was assuming that the image was confusing the term “weight” with “mass” (as both are equal on earth — give or take the variance in Earth’s gravitational field)). If weight was intended to be a separate term, then it’s just incorrect. Weight is the term given to the force that objects in a gravitational field impart on others when they are not accelerating (I mean not accelerating to mean the object is still with reference to the surface of the Earth) [1.1]. In SI, weight is measured in Newton’s [1.2] and mass is measured in kilograms [2].
References
1. “Weight”. Wikipedia. Accessed: 2024-08-13T03:05Z. en.wikipedia.org/wiki/Weight 1. > the weight of an object, is the force acting on the object due to acceleration of gravity. 2. > The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. 2. “Mass”. Wikipedia. Accessed: 2024-08-13T03:08Z. en.wikipedia.org/wiki/Mass > The SI base unit of mass is the kilogram
- Comment on Higgs Field 2 months ago:
As far as my current understanding goes, the majority of mass derives from the binding energy between particles, and only a small amount is due to the higgs interaction.
- Comment on Somehow USB disks are still the easiest and most reliable way 2 months ago:
You’re welcome ☺️
- Comment on Somehow USB disks are still the easiest and most reliable way 2 months ago:
I am unaware of any independent audit. That being said, it is opensource. Given that and its popularity, I am, personally, quite confident in its safety.
- Comment on Somehow USB disks are still the easiest and most reliable way 2 months ago:
For what LocalSend is designed, imo, it is more convenient to use than
scp— by quite a large margin. - Comment on Somehow USB disks are still the easiest and most reliable way 3 months ago:
How do you mean?
- Comment on Somehow USB disks are still the easiest and most reliable way 3 months ago:
You’re welcome 😊
- Comment on Follow RSS feeds from Lemmy 3 months ago:
Interesting idea!
- Comment on Somehow USB disks are still the easiest and most reliable way 3 months ago:
No shout out for my boi LocalSend?
- Comment on Shapez 2 to enter Early Access: August 15 3 months ago:
Now that’s a sequel! It reminds me of how Risk of Rain 2 is to Risk of Rain.
- Comment on What do you prefer to selfhost? 3 months ago:
All of the services that I host are for private use:
- Nextcloud
- FreshRSS
- Immich
- Jellyfin
- RSSBridge
And they are all behind Caddy, which reverse proxies and handles HTTPS.
- Comment on Monitoring Borg backups 4 months ago:
Are you looking for something for a headless server or something for a system with a GUI (eg a desktop)?
- Comment on Pleasant Politics: Politics without the jerks 4 months ago:
What are its rules? I don’t see anything in the sidebar.
- Comment on Should I use a reverse proxy in a homelab? 4 months ago:
It entirely depends on how you want your homelab to work. I use a reverse proxy to set up subdomains for my publicly facing services because I find it easier and cleaner to assign a subdomain to each service, and I also like having HTTPS managed by a single point — a sort of single point of entry to the rest of the services. You’d have to decide what you want out of your homelab, and find and set up the services that yield the outcome that you want.
- Comment on Steam summer sale is on now! What games do you recommend? 4 months ago:
Hollow Knight (it’s currently 50% off).
- Comment on What devices should i look for to get a -30V power supply. 4 months ago:
Measured voltage is completely dependent on what is used as a reference. If you were to measure the voltage of a power supply set to +30V with a voltmeter whose leads were backwards (ie positive on the voltmeter connected to negative on the power supply, and negative connected to positive), then you would measure -30V. All this is to say that if you connect your 30V supply “backwards”, you will have -30V. Now, there may be some circuitry in the power supply that only allows current in one direction, and it could be that it’s able to source a different amount of current than it’s able to sink, so be sure to check its manual.
I’ve tried -12V from psu i’ve got lying around but it didn’t work.
I’d advise caution against arbitrary decisions with electronics — both for your own safety and the safety of the equipment.
- Comment on "Groundhog Day Reloaded" 4 months ago:
Yeah, it definitely rehashed the trope, but I still think that movie is kind of underrated.