this post was submitted on 02 Nov 2023
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[–] Saigonauticon@voltage.vn 58 points 11 months ago

So, in the fine tradition of using bananas for scale...

Bananas are slightly more radioactive than the background, due to potassium-40 content. So an informal unit of radiation measure in educational settings is the 'banana-equivalent-dose', which is about 0.1 microsieverts.

My particle spectrometer saw first light today, and I figure that I could use a banana to calibrate it. Then I noticed that K-40 undergoes a rare (0.001%) decay to 40Ar, emitting a positron. So not only is a banana a decent around-the-house radioisotope source, it's also an antimatter source.

Truly a remarkable and versatile fruit.

[–] silas@programming.dev 18 points 11 months ago* (last edited 11 months ago)

I learned recently how the James Webb Space Telescope is not orbiting around Earth but literally orbiting around an empty point in space. I don’t think I even quite understand it, but it’s really cool

[–] Nonameuser678@aussie.zone 17 points 11 months ago (1 children)
[–] jasory@programming.dev 8 points 11 months ago

This is actually something that people are intended to understand by design.

[–] Thorny_Insight@lemm.ee 17 points 11 months ago (4 children)

I've been dealing with this back pain under my right shoulder blade for like 6 years or so and I can't seem to figure out what's causing it or how to treat it. I think it's called "rhomboid pain". I've seen a doctor once and physical therapist twice and the best they can do is recommend I stretch and go get a massage. Yeah thanks guys. Totally haven't tried any of that.

I've always had a bad posture but it's been getting better yet the pain has gotten worse so I don't think it's that. I doubt it's weight lifting either because I had been lifting for almost 10 years before the pain appeared and taking a break doesn't make it better and lifting heavy doesn't make it worse. I don't think it's mountain biking either because the pain started before I bought my bike. I also got a new bed, tried different pillows, tried sleeping on my back, pillow under my knees. Sleeping on both sides with a pillow between my legs. Nothing. Also it's rarely bad in the mornings but rather on the evenings.

Well - it's still early to say, but I have a new idea what might be causing it and I think this might actually be it. I think it's because I switched from a desktop computer to laptop. It perfectly correlates with the time I started experiencing this pain. I now sit for hours and hours every day with my right hand extended to reach the trackpad. It has to be that. I now switched to mouse and a keyboard and let's see if that makes a difference. Only been doing that for few days now but I have zero pain right now.

[–] deo 3 points 11 months ago (1 children)

I hope the new keyboard and mouse do the trick! I also was experiencing wrist/arm/shoulder pain after I started working primarily on a laptop. I got a split keyboard that i can angle in a more ergonomic manner, and that single change cleared my pain up. Repetitive stress injuries suck. and I hope you find relief with your new work setup.

[–] Thorny_Insight@lemm.ee 3 points 11 months ago (1 children)

It probably doesn't help that I'm also literally sitting in front of my dining table on a shitty chair, but it's not like I had some super ergonomic computer station before either. I really hope this helps because otherwise I'm out of ideas.

[–] deo 4 points 11 months ago

I would definitely suggest getting a good chair. Being able to adjust the height and stuff is really important, especiallyfor shoulder pain. Take a look at used gaming chairs and/or keep an eye out for recently discontinued models at brick-and-mortar office supply stores (mine was super cheap because they only had the floor model left).

[–] August27th@lemmy.ca 3 points 11 months ago (1 children)

Do you keep your wallet in your back pocket when sitting?

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[–] whoisearth@lemmy.ca 3 points 11 months ago* (last edited 11 months ago)

I have had chest discomfort for decades. I'm 46 and it started when I was about 25. Doctors never found anything. I'm lucky to have good benefits and have been going to masseuses for over 10 years.

A couple of years ago tried a new masseuse mentioned the tightness and she found a huge lump of scar tissue she massaged out. I'm still not perfect but I'm light-years better.

My point is, get a massage and never give up. You just need to find the right person to find it.

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[–] cabbagee@sopuli.xyz 15 points 11 months ago

I have a distant sibling that I've been building a relationship with over long distance. Saw them in-person and realized that they have quite a few toxic traits from one of our narcissistic parents. I don't know what to do now. I'm pretty traumatized from that parent and my sibling doesn't see any of it as a negative. I don't think I have the ability to open their eyes on it, either. I want the relationship I thought we had.

[–] hellweaver666@discuss.tchncs.de 15 points 11 months ago

A couple of weeks ago my wife and I got jiggy for the first time in five years. After our third kid she just went completely off it and we’ve been in a dead bedroom situation ever since, she told me how she felt and despite my frustration I understood and respected her wishes. A couple of weeks ago I just opened up about how I was feeling unloved and then blam! It happened out of nowhere. I was in a daze and couldn’t believe it. Now I’m scared it’s going to be five years before it happens again.

[–] Gormadt@lemmy.blahaj.zone 14 points 11 months ago (3 children)

Converting a high resolution photo scanner into a large format digital camera

There's a lot that goes into it and I'm still fairly early in the process but it is possible and has been done before

I already have some lenses that will cover the whole scanner bed, it's mostly a question of power at this point

[–] skillissuer@discuss.tchncs.de 10 points 11 months ago (1 children)

only thing i don't understand about it is why are you dong this

[–] Thorny_Insight@lemm.ee 3 points 11 months ago (1 children)

Perhaps a huge sensor like that is good for night/astrophotography

[–] Gormadt@lemmy.blahaj.zone 5 points 11 months ago (1 children)

Not so much really, it would be more capable for like landscapes and architecture due to the time frame it'd take pictures in

[–] skillissuer@discuss.tchncs.de 3 points 11 months ago

so you're really trading long exposure time + large size for extremely high resolution, that's pretty cool actually

[–] ChaoticEntropy@feddit.uk 3 points 11 months ago (1 children)

Will that not just result in a terrible camera...? O.o

[–] Gormadt@lemmy.blahaj.zone 4 points 11 months ago* (last edited 11 months ago) (1 children)

Surprisingly no

Such scanners can scan at incredibly high resolution

Hundreds of Megapixels in fact

The main thing the time it takes to scan the image is quite high, like 30 seconds or do

Edit: Here's an example photo from someone who did what I'm talking about.

[–] ChaoticEntropy@feddit.uk 2 points 11 months ago

That's actually pretty fascinating, thanks.

[–] roembol@lemmy.roembol.nl 2 points 11 months ago (1 children)

Please do update us on your progress! This is really fascinating

[–] Gormadt@lemmy.blahaj.zone 2 points 11 months ago

Once I finish it I'll be sharing information about it and pictures it takes on multiple photography groups across Lemmy

[–] archchan@lemmy.ml 13 points 11 months ago (1 children)

How it feels to never have had anyone in my life that I could just randomly call up and talk about happy and sad things with.

[–] Hadriscus@lemm.ee 4 points 11 months ago

If you're really set out on doing this I'd gladly make the call

[–] Destraight@lemm.ee 12 points 11 months ago (1 children)

I replaced the back wheel bearing hub on my Celica, but yet I can still hear the droning noise. What gives?

[–] Thorny_Insight@lemm.ee 5 points 11 months ago* (last edited 11 months ago) (1 children)

Is it a rear wheel drive? Maybe your differential is worn. I hope not because that's expensive to fix.

[–] Destraight@lemm.ee 2 points 11 months ago

It's front wheel drive

[–] blujan@sopuli.xyz 11 points 11 months ago (1 children)

I'm in love with an old friend. I'm married. I have two children.

It still feels right.

[–] winkerjadams@lemmy.dbzer0.com 2 points 11 months ago (1 children)

Are you gonna divorce for your friend?

[–] blujan@sopuli.xyz 2 points 10 months ago (2 children)

I know for a fact this friend wouldn't take me.

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[–] businessfish@lemmy.blahaj.zone 10 points 11 months ago

why doesn't Radiohead put out an entire album of songs like pulk/pull revolving doors? they had a really unique and cohesive idm sound going and kinda dropped it to the side

[–] callyral@pawb.social 10 points 11 months ago (6 children)

(and (lisp programming) (libre software))

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[–] peanut_koala@lemmy.ml 10 points 11 months ago (1 children)

There's a part of me that really wants something to take over my body or replace myself with an entirely different person who does all of the things I struggle with. Even if it wasn't a person, if it did work and made my family and friends proud then I could stop struggling.

[–] Jordan_U@lemmy.ml 3 points 11 months ago* (last edited 11 months ago)

Oof.

I feel this all to well.

I highly recommend reading https://www.strugglecare.com/book .

It's not self-help. It's not going to "fix" you.

But reading it was some of the best therapy I've ever received. If you're at all like me, maybe it will help you too. I am happier, as are the people I love and who love me, in large part because of K.C. Davis' philosophy. (The people I love and who love me are also very empathetic and understanding, which I know is definitely not true for most people unfortunately).

It's less than $20.

It's short.

Buy it. If you can't afford it, I might even be willing to buy it for you / venmo you $20 to get it.

Also available in your library / Libby.

Also available as an audiobook.

[–] Rocky60@lemm.ee 8 points 11 months ago (2 children)

Why I can’t simply use an iPad as a Mac Mini monitor

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[–] macabrett@lemmy.ml 8 points 11 months ago
[–] Kiwi_Girl@lemmy.blahaj.zone 7 points 11 months ago* (last edited 11 months ago) (2 children)

Trying to get a job, which requires better equipment.

I need a job, to be able to afford the equipment.

[–] UraniumBlazer@lemm.ee 6 points 11 months ago

Solution: Become the better equipment.

You're welcome for the extreme motivation that you just received. This was thanks to the free trial of my "extreme motivation course". To access "full extreme motivation very hardcore", buy my course for just $999.99.

[–] SkepticElliptic 2 points 11 months ago

You can't borrow the money?

[–] BrainisfineIthink@lemmy.one 5 points 11 months ago

I'm sure plenty of people would understand it, but I'm struggling with a project at work where I've got an operator giving me bad data, and the project appears unsafe and I need to decide and convince my management if we're going to object to it or not.

[–] phpinjected@lemmy.sdf.org 5 points 11 months ago

My mental health

[–] shinigamiookamiryuu@lemm.ee 4 points 11 months ago (4 children)

Something I've been thinking about is... I often mention that I've been trying to look for more friends for a while, because I don't have any that my mind would qualify as any that I have access to, and I often get two questions, 1) how do I define a friend, and 2) how do I know friends would make me happy.

The first question is a rabbit hole in disguise. Most people, when asked, would list a bunch of benefits, right? Things like "someone I can trust" and "someone who puts me first". But that's the thing. Take the first question for example. Do you not have any enemies you might consider at least honest people? And do you not have friends whom might inspire some skepticism? They're not absolute. So that begs the question, what do I answer to the question of what a friend is? I do in fact have an answer, but it's goes deeper than words, the same words used to answer the question. It defeats itself in ways that swell the question rather than remedy it.

As for the second question, that's where it becomes like anhedonia embodied by words.

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[–] zero_spelled_with_an_ecks@programming.dev 3 points 11 months ago (1 children)
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[–] darkpanda@lemmy.ca 2 points 11 months ago (1 children)

Why I can’t get the music to level 1 of the NES game Jackal out of my head. Been like 2 weeks now.

[–] MetricIsRight@lemmy.ca 3 points 11 months ago

Just think of the Duck Tales intro song, that should at least replace it.

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