| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I found that image in Googleland, I'm not sure where. Wikipedia has a complete article with lots of references: http://en.wikipedia.org/wiki/Sunlight " | Read more » | almost 9 years ago | |||
| kero | "Hi @Cfastie, Do you have a reference for the sunlight spectrum you posted in your comment. for my research, I need a reliable reference for the com..." | Read more » | almost 9 years ago | |||
| cfastie | "I guess you're right that taking a spectrum of the sun is not going to allow people in Santa Fe and Beijing to compare their peak heights. Simple ..." | Read more » | over 10 years ago | |||
| nathanathan | "When calibrating against the sun it seems like the spectrum would vary significantly depending on atmospheric conditions (e.g. in a smoggy city, du..." | Read more » | over 10 years ago | |||
| cfastie | "I think bouncing a light off the surface of a substance is not going to produce atomic or molecular emission. You have to excite the atoms or molec..." | Read more » | over 10 years ago | |||
| cfastie | "No reason to assume that intensity is constant from 400 to 900 nm, because we apparently know that it is not: So use a curve like this and correc..." | Read more » | over 10 years ago | |||
| cfastie | "There are plenty of open sources of spectral data. Some are listed at this Public Lab wiki. I think the NIST database is a good standard with reaso..." | Read more » | over 10 years ago | |||
| nathanathan | "@cfastie It is possible to use binary ICA if only the peaks are known. However, in binary ICA all smooth continuous spectra would look nearly the s..." | Read more » | over 10 years ago | |||
| cfastie | "Speaking of fluorescent peaks, I just tried your latest peak detection macro on a spectrum of a fluorescent lamp, then tried your new download macr..." | Read more » | over 10 years ago | |||
| cfastie | "Nathan, Would this procedure require a database of known spectra which included the relative (or absolute) strength of each emission peak or just t..." | Read more » | over 10 years ago |