grating
grating


Author Comment Last activity Moderation
Ag8n "I think your best bet is to call ocean optics. They used to be open to experimentation with their equipment. Unfortunately, the last time I dealt..." | Read more » 7 months ago
jd2602b "Excellent work, the DVD grating offers mentioned advantages. " | Read more » almost 3 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 » about 5 years ago
lionheadrex "THANK YOU!!! I'm terribly impressed that you could tell the circular grooves were horizontal. I'm going to have to tinker a little bit to make th..." | Read more » almost 8 years ago
cfastie "That looks like a good arrangement. The DVD grating might have to be rotated. The circular grooves in the DVD (concentric to the outer edge) should..." | Read more » almost 8 years ago
lionheadrex "Here you go. I've tried a variety of angles, and I can see some emmission spectra, but once I close the box it goes away and all I can see is dark..." | Read more » almost 8 years ago
warren "Hmm, can you upload a photo of the box with the new angled layout? " | Read more » almost 8 years ago
amysoyka "This is your box: |o> |=| |__|| Your pointing your camera directly at the double slit - you instead need to point it at the black of the wal..." | Read more » almost 8 years ago
lionheadrex "Hmmm... when I do this, I can get green and blue lines running the right way - until I close my box. Then they're gone completely and still all I ..." | Read more » almost 8 years ago
cfastie "The grating (DVD) bends the light as it separates it into colors. So the grating has to be at an angle to the light coming from the entrance slit. ..." | Read more » almost 8 years ago
warren "Sunwukong - I would love to see a pic of your setup; is it connected to a telescope? " | Read more » over 8 years ago
cfastie "Sunwukong, You can download the data from any spectrum at SpectralWorkbench.org. So at this page for one of the nicer CFL spectra from Ebert, you c..." | Read more » over 8 years ago
sunwukong "Do you have a data source for the intensity, pixl, wave length for the CFL in this image. Pictures are beautiful. I have a similar setup using so..." | Read more » over 8 years ago
cfastie "Hi Spectralod, Your long tube CFL spectrum is calibrated correctly. I am not sure why you are not getting more distinct peaks with regions between ..." | Read more » about 9 years ago
spectralod "I should have also said that I don't understand this website. It's all over the place. Is there one of those standardized forums you could use inst..." | Read more » about 9 years ago
spectralod "How do you calibrate anything? I haven't figured this out yet. I don't have 3 blue wavelengths to choose from...I don't know which other green wave..." | Read more » about 9 years ago
Tom_H "Chris, I also noticed the 405nm line was all but absent in your spectrum, and that is one reason I brought up my previous experience. I came acros..." | Read more » about 9 years ago
cfastie "Tom, How did the CFL lines drop off in your earlier spectra? I have noticed that my spectral images taken with P&S and DSLR cameras do not reco..." | Read more » about 9 years ago
Tom_H "Chris, How did you overlay the spectral image on the Excel graph? There is another way to extract data from the camera image: Use a software that..." | Read more » about 9 years ago
Tom_H "Good job. I am inspired to work on a similar project. I love the way you recycle what most see as junk! A man after my own heart. I made a spect..." | Read more » about 9 years ago
warren "Wow, i did not regret that. " | Read more » about 9 years ago
cfastie "You tell me. " | Read more » about 9 years ago
warren "If i watch the video, will I know why the post is named "Ebert"? " | Read more » about 9 years ago
straylight "rather nice. I need to lift my game ! :) " | Read more » about 9 years ago