spectrophotometer
spectrophotometer


Author Comment Last activity Moderation
Ag8n "Sorry to bother you. How do your spectra look? How has the instrument been standardized? Thank you. Regards. " | Read more » about 1 year ago
Ag8n "I went over it again. Impressi ve. Are you thinking of doing fluorescence work it, too? " | Read more » about 1 year ago
Ag8n "Very interesting project!! What kind of lamp do you use and how powerful does it need to be? Do you know what spectral range it and the instrument..." | Read more » about 1 year ago
dcanprdn "Absorbance is a chemical definition of how well a dissolved substance attenuates light at a particular wavelength as light passes through a solutio..." | Read more » over 4 years ago
cfastie "I am not familiar with the optics equations. My approach would be to enable precise adjustments of the components and find the best resolution (cri..." | Read more » over 5 years ago
jakemartin "Here is the paper I was thinking of and it is an open paper so everyone should be able to read it. http://www.mdpi.com/1424-8220/8/4/2453 There is ..." | Read more » almost 8 years ago
jakemartin "Thanks Mathew, The linearity in the sensor is a problem however it should be exponential so it can be removed. I am imagining the measurements of..." | Read more » almost 8 years ago
mathew "I want to highlight this awesome part of your blog post: The next step is to see if quantitative fluorescent measurements could be done by using a..." | Read more » almost 8 years ago
mathew "the linearity of that resistor is going to be temperature dependent and non-linear. it may be necessary to get another device to characterize it. ..." | Read more » almost 8 years ago
warren "Can you post links to some of your spectra demonstrating this? I think it might be best to just post a research note with some photos of your setup..." | Read more » over 8 years ago
dckim11 "Finally, I got some interesting data.....BUT the results confuse me. I am looking at algae in a petri dish placed between the light source and the..." | Read more » over 8 years ago
warren "Hi - it doesn't seem like it's lined up with the light bulb; but you could try to diffuse the light by placing a piece of semi-transparent (milky) ..." | Read more » almost 9 years ago
dckim "Hello Warren! I have attached a screenshot of the "Configure" panel in the Capture interface using four different light intensities (at the very t..." | Read more » almost 9 years ago
warren "Hi, Dckim - I just got your email. Can you upload a screenshot of the "Configure" panel in the Capture interface? I think you may need to adjust wh..." | Read more » almost 9 years ago
azaelbg "Hi dckim. One may get sharper and bright images by reducing the slit width (by cutting a narrower slit in a new black card) but then you loose brig..." | Read more » almost 9 years ago
warren "Yes, you can download in the left-hand column on the spectrum page, it's a small grey bar with XML,JSON, CSV download links. So you think your bri..." | Read more » almost 9 years ago
dckim "I attached the picture of the slit. It's from the "standard" desktop spectrophotometer kit that was purchased from here. Any tips with regard to ..." | Read more » almost 9 years ago