| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| msuphysicsformcb | "Thanks for all the advice. This class will be online next semester due to the pandemic (I’m assuming). We have no resources or facilities to dist..." | Read more » | over 4 years ago | |||
| wln215 | "I primarily use these gratings for my spectrometers (my professor supplies them for his optics class) as I find the square shape to be easy to buil..." | Read more » | over 4 years ago | |||
| mimiss | "The Public Lab store also offers diffraction grating as an option when purchasing lego spectrometers. The grating that we carry is also 1000 lines/..." | Read more » | over 4 years ago | |||
| JSummers | "sure, you can do it. Of course the diffraction angle will be different. It looks like the dvd has 1300 lines per mm and the grating has 1000 so t..." | Read more » | over 4 years ago | |||
| Nelari | "I did just that, four months ago, so that problem has already been solved – but thanks all the same. However, I could not make sense of Spectral Wo..." | Read more » | over 5 years ago | |||
| Skorex | "Can you cut the bottom side, glowing with rainbow colors? Thank you On Sat, May 25, 2019 at 6:26 PM \<notifications@publiclab.org> wrote: ..." | Read more » | over 5 years ago | |||
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| Nelari | " Thank you; I now have a meter that seems to work OK. I gave up on the paper version, though – it was just too wobbly. I used wood, instead, to get..." | Read more » | over 5 years ago | |||
| warren | " Hi! The bottom side with the purple tint is the one you want. There are some good pictures on these pages: https://publiclab.org/notes/warren/12-..." | Read more » | over 5 years ago | |||
| jaksch | "Haha @warren thanks :) I agree, it's very similar to the plab v3! Maybe someone drew the laser cutting and the vertical slit was just a mistake. ..." | Read more » | over 6 years ago | |||
| stef | "You might do a search for notes by @stoft 're the plab v3 model. There are drawings that he produced and excellent discussions. The plab v3 mounts ..." | Read more » | over 6 years ago | |||
| warren | "This kit looks really interesting! It's not one of ours, but seems possibly based on one of ours, the #dsk3 -- i'd be interested to learn more! " | Read more » | over 6 years ago | |||
| warren | "This is really helpful, yes! Great sleuthing! " | Read more » | over 6 years ago | |||
| jaksch | "Switched the DVD-RW for DVD+R and tadaa works like a charm. So sorry for the kinda pointless topic, but maybe the info that DVD+RW does not work i..." | Read more » | over 6 years ago | |||
| jaksch | "Update: I build a quick and dirty horizontal slit (approx 1mm wide) and indeed the image is more broad now. However, it is very dark. Below is a p..." | Read more » | over 6 years ago | |||
| Vman | "Thank you so much for the idea on using heatshrink material as a material for making the slit. This is better than paper or cardboard because it di..." | Read more » | almost 8 years ago | |||
| shubham | "Hi wyzac How are you planning to go forward with aluminium holographic foil? Have you tried them already? I am using a flat-field concave grating ..." | Read more » | over 8 years ago | |||
| wyzac | "Okay, you and I want the same thing, for different reasons. I am looking for pure aluminium holographic foil, which is definitely being produced, ..." | Read more » | over 8 years ago | |||
| shubham | "Thanks Warren for the advice. I searched a bit on internet and I think its important that the silver salt crystal to be of sub micron size to get s..." | Read more » | over 8 years ago | |||
| warren | "I wonder if you could make a diffraction grating by using the negatives of a film photo of narrowly spaced lines? " | Read more » | over 8 years ago | |||
| khufkens | "@warren, not sure it justifies a separate page yet, my comment is rather low on details / text. I would need to put some context to it all if this ..." | Read more » | over 9 years ago | |||
| warren | "Wow @khufkens, I think your graphs and notes merit a new research note... We could link it to this note as a followup? " | Read more » | over 9 years ago | |||
| khufkens | "Related, I found this post, discussing in part the asymmetry in the current desktop spectrometer design. I'm designing a symmetrical layout similar..." | Read more » | over 9 years ago | |||
| straylight | "thanks khufkens, interesting graph and really well presented. On a qualitative level, you can see this by shining the red laser through a DVD grat..." | Read more » | over 9 years ago |