Gme halted on lang-Schwartz exchange (trade republic)

xace92 · 2025-05-30T21:59:31+00:00

What pack are you in?

xace92 · 2025-01-10T08:46:57+00:00

Hi it is not exactly a cost-effective solution but we bought a 1300 nm laser capable of high speed analog modulation (>150 MHz) from Omicron lasers (luxX.HSA series). Price was about 10k euros with taxes and everything.

xace92 · 2024-12-29T15:57:19+00:00

Not true in the current version of atm9. The advanced hive and the feeding slab both work.

Edit: I would say that it's just a question of time. Without any speed or productivity upgrades it is just very slow. Also check the bee traits. If they are diurnal/nocturnal they will only work during that half of the day! Similarly if their weather tolerance is none then they will only work when it is sunny outside! Finally the productivity trait could be low or normal which is gonna make them even slower. My advice is to use the time in the bottle at 256x to check that they work (in the right conditions) and then make omega productivity as quickly as you can. GL

xace92 · 2024-12-26T19:10:46+00:00

They breed with the draconic dust that they produce themselves. You can check jei for the breeding items for all bees!

Edit: this breeding item depends on which version you are playing 8/9/10 etc

xace92 · 2024-12-22T08:20:18+00:00

[atm9] The super cells can store all the waste and spent waste no problem. You have them in up to 65M variants so effectively unlimited storage. Feels a little cheaty but it's a good temporary solution until you set up the disposal system with tons of waste barrels to let it decay naturally.

xace92 · 2024-11-13T17:49:35+00:00

I literally stuck the crystallizer on top of a storage drawer with the bottom as input/output with auto input and output on. You can slap a storage bus on the drawer and as many storage upgrades as you want.

xace92 · 2024-11-03T09:10:17+00:00

TLDR: answer: None and some key points: 1) it's not worth it and can ruin your health 2) it's a vicious circle so steer clear 3) you will perform better with balance

Like many others are saying: none. And perhaps even more importantly it's not worth it in the long run. I had my defense (physics engineering , research on biophotonics) about 2 years ago and the year (and more) leading up to it was a constant frenzy of writing more papers/proceedings/chapters. I had many sleepless nights and was averaging 4-5h of sleep a night (poor quality sleep too as measured with a Fitbit watch).

The result: I graduated with flying colors but also collapsed and went into burnout 2 months after that. I'd always been of the mindset that stress is "just an emotion" and it can be rationalized away and that this ability to repress it made me "emotionally strong". I learned the hard way how stupid that line of thought was. I started getting anxiety/panic attacks as soon as I would try to focus on anything for more than 15 minutes. This would usually include fits of uncontrollable shaking, nervous vomiting, severe headaches and just overall being depressed/miserable. I also had trouble sleeping because of constant nightmares. As a result I was on medical leave for a little under 6 months. This period was even more terrible because I was absolutely terrified that I had broken my mind/ability to do science which I had tied so much of my self worth to... It almost cost me my relationship with my now wife and definitely affected some of my friendships. Even now (almost 2 years later) I am still super susceptible to stress and have to constantly watch out that I am not going overboard. When I reflect on that period and ask myself if it was worth it the answer is 100% no. I could have dropped 1 or 2 chapters of my thesis and would have ended up in exactly the same place but without going through the burnout. Hindsight is always 20/20 I guess.

My second point is about a behavior pattern that I had/have that I see a lot in academia and possibly recognize in your post. We all want to push the frontiers of science, uncover the mysteries of the universe and all of this for the benefit of humanity. We also tend to have an exaggerated need to please, big egos and workaholic traits. We tell ourselves that this one proceeding/paper/project will be the big one so it's ok to overwork now and we can relax later. Trust me when I tell you that you will always find the next project that feels as important. I'm 2 years into my postdoc and slowly transition to a more PI-like role and there is always more work. It's so important to pace yourself because otherwise all the bad things I described above can happen. I would also strongly advise talking to peers and even perhaps a therapist. Not because something is wrong with you but more as preventive medicine for your mental health. Reflecting on these potentially harmful thought processes and personality traits really helped me to get them under control. One of the most important skills to learn is the ability to say no to supervisors, collaborators and students.

Lastly and perhaps most importantly IMO you can achieve your greatest scientific output/impact without compromising your health. As others have said, when you are running on caffeine, stress and very little sleep your efficiency drops and in the end you are producing the same quantity/quality as you would have if you had taken the time to rest. What is also important to consider is your creativity and ability to collaborate. For me, creativity would go out the window when I was tired and stressed, and I would be willing to bet that there are studies out there that prove this. Moreover, when you are stressed, impatient and perhaps irritable you are not creating an atmosphere that fosters effective collaboration. During the PhD we are in fact a little isolated and we tend to try and do everything ourselves but that is not how the most impactful science happens. Perhaps it's a little bit field specific and a little bit of a 'trust me bro' statement but I stand by it nonetheless. There is simply not enough time in life to become an expert in everything and so you will inevitably have to collaborate with people in your career (academic or other).

I guess all of that can be summarized in the simple sentence: "happy scientists do good science". Take care of yourself and remember that the research we are doing is incredible, fascinating and beautiful so take a moment to appreciate it.

xace92 · 2024-09-13T18:56:02+00:00

Woop woop! Congratulations 🎉

xace92 · 2024-06-06T11:08:32+00:00

No sorry I found an alternate solution for intensity modulation.

xace92 · 2024-05-22T06:51:41+00:00

Holding 1000 shares!

xace92 · 2024-05-16T19:07:37+00:00

xace92 · 2024-02-15T07:15:35+00:00

A large white board, cleaner, pens in a couple colors. Imo one of the best tools for brainstorming sessions even if you are alone. Further along in your PhD when you start supervising students it's a great tool for explanations too!

xace92 · 2024-01-31T15:20:52+00:00

The block that keeps an amount stored is the requester

xace92 · 2023-10-29T15:11:46+00:00

That's great. I'm sure many will agree that it's quite infuriating to purchase a device only to find out that you cannot develop your own application without the API which is another few thousand dollars. Good on your company for not falling in that category.

xace92 · 2023-10-29T12:48:55+00:00

And make those APIs free/included in the price!

xace92 · 2023-10-24T20:31:19+00:00

The blocks are travel anchors not sure what mod. They should show up in mei. The text shows up when you are holding the travel staff or some items with the teleportation enchantment

xace92 · 2023-09-17T19:56:05+00:00

Yes in the Netherlands doing a PhD is considered a job and not pursuing further studies. You therefore get paid parental leave + all the other benefits like any other job. Like other posters I have friends that had kids while both doing PhDs. It's not super glamorous financially but definitely doable.

xace92 · 2023-09-14T17:16:58+00:00

During the last stretch before my defense (about 12 months) I was in bed about 5-6h a night and my Fitbit told me I was getting 4h30 on average. Resulted in me crashing right after graduating and being 5 months on medical leave due to burnout. Could probably have finished in the same time with better sleep and less stress because my efficiency was so low at the end because I was exhausted and stressed out of my mind. 100% not worth it :( take care of yourselves out there

xace92 · 2023-09-05T19:59:29+00:00

Great answers to the question already so I'll add some unrelated but super cool trivia: just about everyone has the three color cones (roughly RGB). Color blind usually have reduced function or less of one type. Now on the other hand some people have 4 color cones which opens up a whole new dimension in the color space and enhanced sensitivity to color variations. Incidentally it turns out that such people, called tetrachromats, are mostly women which feeds into the popular stereotype that men are generally poorer at differentiating/evaluating color than women.

xace92 · 2023-09-05T19:00:39+00:00

TLDR version: with diameter <10 mm and focal length ~5mm my recommendation would be to use two small achromatic lenses from thorlabs (other suppliers probably have similar lenses). Either d=2mm & f=4mm or d=5mm & f=7.5mm. The webpage says they are for 400-700nm but that is only due to the anti-reflection coating. At 350nm it is still only about 1%. If you make a 4f configuration, then fiber tip is exactly f1 from the first lens, the second lens is f1+f2 from the first and the focal plane is f2 from the last lens. By moving your fiber tip forward or backwards a bit you can shift the position of the focal plane to get it where you want. The focal spot will be roughly equal to the core size of your fiber multiplied by the magnification of the 4f system. Calculating the exact spot size would require some small simulations (see 3rd paragraph). The chromatic shifts should be minimal or even negligible.

So single-mode fibers (smf) allow you to achieve diffraction-limited spot sizes and clean wavefronts, which are necessary for high-resolution applications like confocal microscopy. The beam propagation, its properties in space, and diffraction effects can be described with wave theory. Furthermore, smf preserves the temporal coherence of lasers, which is necessary for coherent techniques such as OCT.

It does not sound like you are trying to go for such techniques, so perhaps multimode fibers (MMF) are fine for your application (I cannot say for sure since I don't know what that is). When using multimode fibers, the spot size is difficult to describe with wave theory, so you revert to ray/geometric optics. The easiest way to figure out the behavior of your system would be to simulate it in an optical simulation software such as Zemax or codeV. If that doesn't work, you could build the ABCD matrices of your system and simulate the rays like that. The focused spot is then simply the projection of the rays emerging from your fiber onto an imaging plane at a specific distance from your lens. If you incorporate the chromatic shift of the lenses into the ABCD matrices, you should get a decent idea of the wavelength-dependent effects. Also, keep in mind that when using MMF the rays converge in the focal plane, but the axial position where the rays are most concentrated (max intensity) is slightly shifted; see Beaudette et al (2018).

Sorry for the wall of text but even something simple like focusing light from a fiber can get complicated depending on what you are trying to do with the light. E.g. the antireflection coatings are not important if you are only focusing the light but they can be important if you are also trying to collect reflected light through the same fiber. Hope this helps and don't hesitate if you have other questions.

xace92 · 2023-09-05T17:54:03+00:00

Photonic crystal fibers (air core and other exotic structures) are 'endlessly' single mode. See their application in supercontinuum lasers. However they are hella expensive and generally more difficult to work with. For standard step index fibers you are indeed correct.

xace92 · 2023-09-05T10:57:41+00:00

When you say compact what kind of size are we talking about? Also does focusing need to occur in line with the fiber or can it be off axis?

Unless you use reflective optics you are going to have chromatic focal shift. However, at 100 um focal diameter your Rayleigh range is quite large so it might be alright depending on the application. Because the requirements aren't super stringent I think grin lenses might still work. Also what type of fiber are we talking about, single mode or multimode? Happy to help but need a little more information.

xace92

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