| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| straylight | "great workshop, really well run and I loved reading about the glitches along the way :) Now you have a prototype working, the next step would be t..." | Read more » | almost 10 years ago | |||
| kanarinka | "Awesome write-up guys - I can't believe how much progress was made in such a short time. I think the audio stuff has so much educational potential ..." | Read more » | almost 10 years ago | |||
| mathew | "visualizing data is hot right now, but this is some next level $#!%-- in-situ data landscape audiolization--- its so cutting edge the spellchecker ..." | Read more » | almost 10 years ago | |||
| warren | "Great tone difference at around 2:26! I love the idea (discussed with @dorncox) of listening to two of these at different ends of your yard, or up ..." | Read more » | almost 10 years ago | |||
| patcoyle | "Inspiratioanal, aspirational - thanks for posting this. " | Read more » | almost 10 years ago | |||
| stoft | "Ok, so the plots are absorption; which makes more sense. However, the Y axis is labeled "Intensity". It would be more clear to either plot relative..." | Read more » | about 10 years ago | |||
| ygzstc | "Dave - Thanks a lot for the insights...As you said, when I add oil sample, intensity decreases and since the plots above is the difference between ..." | Read more » | about 10 years ago | |||
| jeffh | "Very nice work. I checked the listing for the lamp, and if you are using the original bulb, it is a "warm white" with color temperature of 2700 deg..." | Read more » | about 10 years ago | |||
| stoft | "Nice experiment. As I recall, white LEDs have a significant 'bump' at about 430nm, a dip at 470nm and a broad peak about 600nm so I assume the 470 ..." | Read more » | about 10 years ago | |||
| liz | "Wow this is fantastic!!! I can't wait to try this method~! " | Read more » | about 10 years ago | |||
| ygzstc | "Jeff, I am sure it can be done. However, coding is not my strong suit :( I may help on theory and algorithm development though... Cfastie, you are..." | Read more » | about 10 years ago | |||
| cfastie | "This is excellent research. Do you think if I bought some "100% extra virgin olive oil" and sent you a sample, you could tell me if it was really 1..." | Read more » | about 10 years ago | |||
| warren | "Wow, this is spectacular -- thanks! I'm wondering if there's a way we could write a macro for Spectral Workbench to do this kind of analysis in rea..." | Read more » | about 10 years ago | |||
| Tom_H | "The basic grating equation works for transmission as well as reflection. The sign conventions can throw you though. One purpose of the collimatin..." | Read more » | over 11 years ago | |||
| liz | "This is amazing! I also like Dan Beavers graphic :) " | Read more » | over 11 years ago | |||
| cfastie | "Yes, now I have it. When the entrance slit is rotated the rectangular spectral image turns into a parallelogram. It seems to get compressed vertic..." | Read more » | over 11 years ago | |||
| danbeavers | " I hope this illustrates what I mean. " | Read more » | over 11 years ago | |||
| cfastie | "Tom, The Jobin Yvon tutorial describes reflection gratings, and I don't know enough to apply those rules to our transmission grating setups. The ma..." | Read more » | over 11 years ago | |||
| danbeavers | "Chris, I am referring to the rotational alignment between the slit axis and the grating's ruling. What is the effect when the angles are rotated? " | Read more » | over 11 years ago | |||
| cfastie | "Dan, I don't know what you mean by slit to grating angle. Angle g? Tom, I am reading now! " | Read more » | over 11 years ago | |||
| Tom_H | "Great job! An optical bench from Legos --- super! Yes there are a lot of variables at work here. If you want to bend your mind a bit, read some of..." | Read more » | over 11 years ago | |||
| danbeavers | "Great investigation! Another question is slit to grating angle. What effect does that have? What are the symptoms of misalignment? " | Read more » | over 11 years ago | |||
| cfastie | "Jeff, Really good questions. I don’t think I can answer any of them from first principles. Focusing the image of the spectrum is one of the inscru..." | Read more » | over 11 years ago | |||
| warren | "Oh, almost forgot my other question! Do the camera lens and aperture make any difference at all? You didn't use a camera for this... could you try ..." | Read more » | over 11 years ago |