| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| MrBumper | " I seem to remember the web site app does not cope well with two cameras. If you can find a software toggle on your system (you may even need to go..." | Read more » | almost 6 years ago | |||
| MrBumper | "No a DVD is not suitable. The majority of pressed DVDs are single layer, so they cannot be split to expose the (grooves/pits and lands) diffraction..." | Read more » | over 6 years ago | |||
| MrBumper | "Sigh! well I wondered why I hadn't come across 'daylight' halogen before. It's cos they don't seem to be available in the UK, at least the Solux la..." | Read more » | almost 10 years ago | |||
| MrBumper | "I've just looked at the Solux lamps. As far as I can see they are halogen lamps with built in blue filters. What a great find. I've tried daylight..." | Read more » | almost 10 years ago | |||
| MrBumper | "This does look very promising. How was your spectrometer set up - blue dye removed from DVD-R grating ? (assuming you used a DVD-R), IR filter remo..." | Read more » | almost 10 years ago | |||
| MrBumper | "I'm wondering if you took any account of the web camera settings - in particular colour temperature / white balance. This has quite a large effect ..." | Read more » | almost 10 years ago | |||
| MrBumper | "I'd really like a stand alone version so I can store, organise and delete captured data and take measurements without an internet connection. If at..." | Read more » | almost 10 years ago | |||
| MrBumper | "You make some great points there. It seems to me that it is difficult to keep what may be valid experimental results, separated from rough tests, "..." | Read more » | almost 10 years ago | |||
| MrBumper | "Matthew - I found that static soaking helps soften the dye. But then the dissolved dye just sits in solution above the surface of the DVD-R fragmen..." | Read more » | almost 10 years ago | |||
| MrBumper | "Thanks Matthew, that's good to know. I suppose the IR response might be better if both the lens filter and the dye on the grating weren't present. ..." | Read more » | almost 10 years ago | |||
| MrBumper | "Following my repeat experiment I have been thinking about the IR response of the PL spectrometer. I haven't been that concerned about it because it..." | Read more » | almost 10 years ago | |||
| MrBumper | "Thank you very much. I'm sorry if my initial response seemed overly protective of my results. I hope I don't wind up like Fleischmann and Pons ! I ..." | Read more » | almost 10 years ago | |||
| MrBumper | "OK but my intention was not to measure inaccuracy / repeatability in the wavelength measurement, or highlight any errors in the Spectral Workbench ..." | Read more » | almost 10 years ago | |||
| MrBumper | "The "squeezing" referred to in the previous comment is, I believe, actually a result of the way that Spectral Workbench uses the two reference poin..." | Read more » | almost 10 years ago | |||
| MrBumper | "Nice "out of the box" on the Spec 3 Stevie. You might find my research note - http://publiclab.org/notes/MrBumper/01-11-2015/preparing-a-dvd-r-to-a..." | Read more » | almost 10 years ago | |||
| MrBumper | "Matthew I'm a bit baffled by your reply to my previous comment. You picked the Sanm Tech specifically because exposure control was implemented ......." | Read more » | almost 10 years ago | |||
| MrBumper | "As far as I know the guide groove on a DVD+R would be indistinguishable from that on DVD-R as far as using it for a diffraction grating is concerne..." | Read more » | almost 10 years ago | |||
| MrBumper | "Well I have tried the Sanm camera 'popsickle' stick camera with various control utils. There is absolutely no sign of an exposure control Matthew. ..." | Read more » | almost 10 years ago | |||
| MrBumper | "I'm not at all sure you can measure what you seem to be talking about, or at least not in the way you seem to be going about it. As far I know the ..." | Read more » | almost 10 years ago | |||
| MrBumper | "I don't know if this will clarify anything, but I'm finding using a laser beam from a red laser pointer quite useful in examining what goes on with..." | Read more » | about 10 years ago | |||
| MrBumper | "Hi Chris, Thanks for the tip on dark material and your findings on grating orientation. The internet really is killing bricks and mortar retail, I ..." | Read more » | about 10 years ago |