lat:63
lat:63


Author Comment Last activity Moderation
Ag8n "If a source like the sun or an incandescent lamp is used, then maybe using a photographic bg20 filter as a standard would do. The spectrum they a..." | Read more » almost 3 years ago
Ag8n "There is a closely related chemical recently added to the USP for uv/vis standardization. It is a solution of didymium. Some places also use a gl..." | Read more » almost 3 years ago
Ag8n "https://youtu.be/u5tUmdWALn0 Hopefully, this link works to the video " | Read more » almost 3 years ago
Ag8n "Of you take a look at commercial instruments, they will usually use holmium oxide or other holmium salts for calibration. Great. These salts are ..." | Read more » almost 3 years ago
Ag8n "Found something.It's a YouTube post by chem_talk on neodymium. It's a long way from complete, but according to the post, this rare earth isn't rar..." | Read more » almost 3 years ago
mimiss "Thank you for this idea! I have laser pointers in a few colors in my house that I can try out. On May 5, 2020, at 11:19 AM, notifications@publicla..." | Read more » almost 4 years ago
liz "I think I used a red laser and a green laser to get the calibration to work at some point... " | Read more » almost 4 years ago
kgradow1 "Could you use a laser pointer and still go through the same workflow with @cfastie's reference image? I'm not sure if the peaks would line up, th..." | Read more » almost 4 years ago