Thanks for your patience during our recent outage at scalar.usc.edu. While Scalar content is loading normally now, saving is still slow, and Scalar's 'additional metadata' features have been disabled, which may interfere with features like timelines and maps that depend on metadata. This also means that saving a page or media item will remove its additional metadata. If this occurs, you can use the 'All versions' link at the bottom of the page to restore the earlier version. We are continuing to troubleshoot, and will provide further updates as needed. Note that this only affects Scalar projects at scalar.usc.edu, and not those hosted elsewhere.
Chemistry & Crime: The Science Behind Solving CasesMain MenuWelcome!AuthorsHistory & Evolution of Forensic ScienceAn Introduction to Modern Forensic Scienceby Alyssa AdranedaForensic ToxicologyFingerprintingBlood & DNAPathologyJane Lah689ef3bc5e8206f2e55474a83c1a71535b012294
Gunpowder Residue
12023-10-20T18:57:30-07:00Jane Lah689ef3bc5e8206f2e55474a83c1a71535b0122944160614plain2023-10-20T23:35:59-07:00Jane Lah689ef3bc5e8206f2e55474a83c1a71535b012294History Ned Doheny Jr. Doheny Library On the night of February 16, 1929, Ned and his close friend and personal secretary, T. Hugh Plunkett, were found shot to death in one of the guest bedrooms of Greystone, Ned's Beverly Hills mansion. After his death, his parents donated $1.1 million to USC to build the Edward L. Doheny, Jr. Memorial Library.
Chemistry
Gunshot Residue Analysis Gunshot Residue (GSR): GSR arises from the cooling and condensation of the materials produced by the combustion reactions within the firearm and can be deposited on the firer, bystanders, and surrounding surfaces in the event of a discharge. Chemical analysis - combustion reaction from primer that results in lead, barium, antimony byproducts
12023-10-20T23:34:29-07:00The science of gunshot residue analysis1After a gun is fired, tiny particles called gunshot residue are left behind. What are these tiny particles, and how can they help ...plain2023-10-20T23:34:29-07:00