| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| jpschaaf | "@asnow -- I did not order a kit so nothing to worry about from that perspective; I just would like to see the page edited in case someone else gets..." | Read more » | almost 7 years ago | |||
| asnow | "Hi @jpschaaf You are right! The kits should come with 4 x 3036 plates, not one as mentioned above. Regarding use of the 3004 bricks, which step in ..." | Read more » | almost 7 years ago | |||
| jpschaaf | "The parts manifest should show Four 6 x 8 plates - 3036 instead of one. I'm also pretty sure that building the illustrated item also requires two..." | Read more » | almost 7 years ago | |||
| Bronwen | "Hi @dcanprdn you're not missing anything, our initial pre-order was so that folks could get in early to start making their own and contributing to ..." | Read more » | almost 7 years ago | |||
| dcanprdn | "I just got a lego spectrophotomer "kit" a bag of some lego pieces, a slit, and a CD. Directions are online I guess and the buyer must supply the ..." | Read more » | almost 7 years ago | |||
| cfastie | "I don't know whether you could see a clear projected image of the spectrum. I think you could, but it would rather small and dim. I also don't know..." | Read more » | about 10 years ago | |||
| wizard | "Wow... excellent information... thanks. I am a newbie, and my questions will be indicative of that.... I see now that I may assemble two spectrome..." | 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 » | almost 12 years ago | |||
| liz | "This is amazing! I also like Dan Beavers graphic :) " | Read more » | almost 12 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 » | almost 12 years ago | |||
| danbeavers | " I hope this illustrates what I mean. " | Read more » | almost 12 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 » | almost 12 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 » | almost 12 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 » | almost 12 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 » | almost 12 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 » | almost 12 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 » | almost 12 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 » | almost 12 years ago | |||
| warren | "Amazing. Two questions: does the distance between the camera and the grating affect focus? if we assume that for the design of a compact/useful s..." | Read more » | almost 12 years ago |