| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| gretchengehrke | "The EPA has created a comprehensive database for physical, chemical, and toxicological data for hundreds of thousands of chemicals: https://comptox..." | Read more » | about 6 years ago | |||
| cosettespafford | "Thank you, Chris! Your explanation really helped! Cosette " | Read more » | over 8 years ago | |||
| cfastie | "Hello, Some experiments suggested that viewing the spectrum at a slight angle (from perpendicular to the grating) produced a clearer image of the ..." | Read more » | over 8 years ago |