The more concentrated it is, the more of these fumes enter the blood stream. Of course, when air with these fumes is exhaled, breathalyzers can detect it. How accurate is a breathalyzer? Modern breathalyzers are fairly accurate, but they're not perfect. They do have a margin of error, ...
The CSI may also use luminol and a portable UV light to reveal blood that has been washed off a surface. If there is blood at the scene, there may also be blood spatter patterns. These patterns can reveal the type of weapon that was used -- for instance, a "cast-off pattern" is ...
"Despite claims of 'lie detector' examiners, there is no machine that can detect lies," reads a statement from the American Civil Liberties Union (ACLU). "The 'lie detector' does not measure truth-telling; it measures changes in blood pressure, breath rate and perspiration rate, but those ...
Immunoassay testing works by using antibodies to detect small biological substances in the blood and other bodily fluids. The method follows the aspect that particular antigens binds to specific newly introduced antibodies, thereby stimulating an immune response. This refers to specificity, as antibodies...
The more concentrated it is, the more of these fumes enter the blood stream. Of course, when air with these fumes is exhaled, breathalyzers can detect it. How accurate is a breathalyzer? Modern breathalyzers are fairly accurate, but they're not perfect. They do have a margin of error, ...
The more concentrated it is, the more of these fumes enter the blood stream. Of course, when air with these fumes is exhaled, breathalyzers can detect it. How accurate is a breathalyzer? Modern breathalyzers are fairly accurate, but they're not perfect. They do have a margin of error, ...
"Despite claims of 'lie detector' examiners, there is no machine that can detect lies," reads a statement from the American Civil Liberties Union (ACLU). "The 'lie detector' does not measure truth-telling; it measures changes in blood pressure, breath rate and perspiration rate, but those ...
The easiest way to detect the gender of an adult skeleton is to simply look at the size of the bones -- males' bones are normally larger, as are the areas where muscle connections are made. There are many differences in the pelvic bone, the most obvious of which is the size of the ...
If the blood is on something that can't reasonably go to the lab, like a wall or a bathtub, the CSI can collect it by scraping it into a sterile container using a scalpel. The CSI may also use luminol and a portable UV light to reveal blood that has been washed off a surface. ...
"Despite claims of 'lie detector' examiners, there is no machine that can detect lies," reads a statement from the American Civil Liberties Union (ACLU). "The 'lie detector' does not measure truth-telling; it measures changes in blood pressure, breath rate and perspiration rate, but those ...