Luminol is used by forensic investigators to detect trace amounts of blood left at crime scenes as it reacts with iron found in hemoglobin. It is used by biologists in cellular assays for the detection of copper, iron, and cyanides, in addition to the detection of specific proteins by Western Blot.
For analysis of an area, luminol can be sprayed evenly across the area, and trace amounts of an activating oxidant will cause the luminol to emit a blue glow that can be seen in a darkened room. The glow lasts for about 30 seconds, but the effect can be documented by a long-exposure photograph. It is important that the spraying be evenly applied to avoid creating a slanted, or biased impression, such as blood traces appearing to be more concentrated in areas which received more spray. The intensity of the glow does not indicate the original amount present, but only the distribution of trace amounts of substances left in the area.
Daddy came home from work today.
Everyone needs this on their dash.
I think I’m going to cry
U know how in winter it gets so cold and u think u will never be hot again and in summer it gets so hot u think u will never be cold again I think that is how it is with ur feelings like when u r sad u think u will never be happy and when u r happy u think u will never be sad. But u will be hot again and u will be cold again and u will be sad again but most of all u will be happy again
This is so relevant
So Kanye West just signed our production coordinator’s framed embroidered Kanye tweet.
do you ever get sad over something that happened a long time ago because i do