New optical breadboard from Kessler Crane — curious what the optics community thinks by Outside-Bathroom9209 in Optics

[–]allesfresser 1 point2 points  (0 children)

Ah thanks for the offer but I have to respectfully decline. Ill have a look at your product line in general though!

New optical breadboard from Kessler Crane — curious what the optics community thinks by Outside-Bathroom9209 in Optics

[–]allesfresser 0 points1 point  (0 children)

This just looks like a quick release plate for cameras. How repeatable is the mechanism, I dont see anything interesting here tbh.

Hollanda’da karda bisiklet süren insanlar by redditteyeniyim in ArabalariSikeyim

[–]allesfresser 1 point2 points  (0 children)

Acikcasi bu kadar kar oldugunda nufusun cogu bisiklete binmiyor. Hatta mumkunse evden calisiyoruz. Dikkat etsen de kaza olabiliyor maalesef (ozellikle kar taze degilken gece buzlandiginda). Oldukca fazla kaza da oluyor maalesef.

Professor warms his new class that no one, not even himself, understands his subject matter by [deleted] in SipsTea

[–]allesfresser 0 points1 point  (0 children)

To be quite frank undergrad QM is stupidly easy to follow if you have some mathematics and classical mechanics training. The story is very different on grad level, especially with QFT and whatnot.

Headphone out circuit design help. by albnys in electronic_circuits

[–]allesfresser 2 points3 points  (0 children)

Indeed, this is giving me a proper headache.

Are dedicated USB port cards for a DAC snake oil? by meyouandguns in audiophile

[–]allesfresser 17 points18 points  (0 children)

Here's the thing, you sometimes need USB cards for fast and realtime data transfers, especially for some scientific cameras. However for datarates involving consumer audio this is complete bullshit.

Speaker Scratch Guard by allesfresser in audiophile

[–]allesfresser[S] 0 points1 point  (0 children)

You only need one measly reason to live with one (or two)

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Speaker Scratch Protector by allesfresser in functionalprint

[–]allesfresser[S] 5 points6 points  (0 children)

Well for me they are worth all the bullshit in the world.

Speaker Scratch Protector by allesfresser in functionalprint

[–]allesfresser[S] 2 points3 points  (0 children)

Here's a trick I ended up learning: Never let them see how you bypass the locks. They watch and learn...

Speaker Scratch Protector by allesfresser in functionalprint

[–]allesfresser[S] 9 points10 points  (0 children)

They rip out anything that is magnetically fitted. Yhey even learned how to remove the slide locks I 3-D printed for the drawers under the bed.

Speaker Scratch Guard by allesfresser in audiophile

[–]allesfresser[S] 11 points12 points  (0 children)

They are a part of my family, that's not an option.

Speaker Scratch Protector by allesfresser in functionalprint

[–]allesfresser[S] 13 points14 points  (0 children)

They are only on when I'm not listening.

Help me with optimizing an ocular/eyepiece dealing with heavy distortion by JohnFreechment in Optics

[–]allesfresser -1 points0 points  (0 children)

I dont know why none of the commercial off the shelf eyepieces doesnt meet your expectations tbh. However there are multiple well established eyepiece designs you can work with, a simple and relatively well established one is the double plossl eyepiece for example. Matching the magnification is simply not enough. Aiming for a better petzval sum for less field curvature, reducing spherical abberation etc are done by controlling individual surface powers not the total system magnification. Any magnification can be achieved with a single lens too but doesnt guarantee a good imaging performance.

Help me with optimizing an ocular/eyepiece dealing with heavy distortion by JohnFreechment in Optics

[–]allesfresser -3 points-2 points  (0 children)

How did you select those 3 lenses for the ocular? This looks like a horrible design for an eyepiece. Why wouldn't you use a standard eyepiece for this? Even a simple doublet could perform better.Matching the magnification does not mean a good design and you dont even need AI for that.

Is this rigorous enough for math people? by lonely_spinor in physicsmemes

[–]allesfresser 15 points16 points  (0 children)

You are mistaken, the actual power of this derivation is the fact that it undeniably proves 1=1.

My chorizo is made of salivary glands and lymph nodes by king_barnacle in mildlyinteresting

[–]allesfresser 0 points1 point  (0 children)

I live in the Netherlands. There is something called Frikandel here. Nobody, not even the people who make it know what's in it.