| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "The 365nm might get us clear data above 410nm -- possibly better than the laser! " | Read more » | about 8 years ago | |||
| warren | "Hmm, i looked on DigiKey and found some more options, some high brightness, and one listed as 365nm, which'd be great: http://www.digikey.com/shor..." | Read more » | about 8 years ago | |||
| dhaffnersr | "here is a picture of a 3W LED mounted on a heatsink and an optional focal lens, this LED's wavelength is 410nm-465nm. 11401.Jpg 13779.Jpg " | Read more » | about 8 years ago | |||
| dhaffnersr | "Hey Jeff, yeah that's an ultra-brite LED (high current/high-flux output.) it's just mounted on a heat sink assmbly. I have a few of those, but the..." | Read more » | about 8 years ago | |||
| warren | "Ah, excellent, excellent, but it's my understanding that the plastic LEDs like that aren't typically as bright as the surface mounted flat LEDs I'm..." | Read more » | about 8 years ago | |||
| dhaffnersr | "Here is where you can buy 395nm UV LED's for $1.40 a piece. http://www.allelectronics.com/make-a-store/item/uled-2/ultraviolet-led-395-nm-30-degre..." | Read more » | about 8 years ago | |||
| dhaffnersr | "Here is the Peak and FWHM data for both the 395nm and 405nm readings: PEAK DATA UV laser 405nm 1) Isopropyl alcohol wavelength [nm] absorbance ..." | Read more » | about 8 years ago | |||
| dhaffnersr | "Hey Jeff, glad you found this useful, I believe the baseline noise is caused by the extra cell length (the glass test tubes are 2.05cm.) I am waiti..." | Read more » | about 8 years ago | |||
| warren | "Oh i see here from your post to the list: https://spectralworkbench.org/sets/3176 UV flashlight 395nm baselines feb23 using .09mm slit https://sp..." | Read more » | about 8 years ago | |||
| warren | "Very consistent results, too, BTW! Although i see there is a change in baseline noise between your two laser tests. " | Read more » | about 8 years ago | |||
| warren | "Ha, this is great to see! I looked at the graph and my very first thought was "that doesn't look like a 405nm LED, it looks like a 395nm LED". And..." | Read more » | about 8 years ago | |||
| liz | "This is great! 20 people replicated this construction in Cuenca, Ecuador by printing out their own on heavy black paper. " | Read more » | over 8 years ago | |||
| mathew | "the crude looks really clipped-- I know there's a dip in the middle but it is really topping out. " | Read more » | over 8 years ago | |||
| warren | "Thanks for your feedback! " | Read more » | over 8 years ago | |||
| warren | "I don't believe those are clipped - I increased the exposure until it just barely touched the top, but did not depress or deform the top of the cur..." | Read more » | over 8 years ago | |||
| mathew | "the 80W-90 looks a bit clipped in the blue: https://spectralworkbench.org/spectrums/55075 the crude is substantially clipped in the blue: https:..." | Read more » | over 8 years ago | |||
| MelissaN | "I wonder, for usability, if the V piece and the M-folded piece can have slits for the attenuator in both sides as well as their being an extra cuto..." | Read more » | over 8 years ago | |||
| warren | "Awesome. This went well, although unlike the laser cutter, my Silhouette cutter doesn't remove material, so the V-shaped piece didn't quite fit. If..." | Read more » | almost 9 years ago | |||
| warren | "Super tnx! " | Read more » | almost 9 years ago | |||
| mathew | "that is the latest file, yes. its only slightly modified for die cutting. " | Read more » | almost 9 years ago | |||
| warren | "It looks like the cut files are both the same, but I dug out the 2nd file from the staff design folder -- is this it? all-together-10-2.pdf " | Read more » | almost 9 years ago | |||
| chongyukwai | "My physical address has been sent to this Email address:jeff@unterbahn.com. I don't mind you guys send it to me and I will do the test! " | Read more » | almost 9 years ago | |||
| warren | "Oh, we'd be happy to send you one if you'd do the test! " | Read more » | almost 9 years ago | |||
| chongyukwai | "I am willing to test the oil testing kit but I don't have any UV laser " | Read more » | almost 9 years ago |