The result is a pale blue luminescence whenever the solution meets blood, which itself is a consequence of a chemical reaction that the blood gives a helping hand to. Here, we look at this reaction â and what horseradish has to do with it. Luminol, known chemically as 5-Amino-2,3-dihydro-1,4-phthalazinedione, isnât used in the CSIâs mysterious spray bottle on its own. Itâs joined by a number of other chemicals which are just as vital for the reaction to take place.
â¢ DISK DRIVE (noun) The noun DISK DRIVE has 1 sense: 1. computer hardware that holds and spins a magnetic or optical disk and reads and writes information on it. Familiarity information: DISK DRIVE used as a noun is very rare.
Hard drive. A hard disk drive (sometimes abbreviated as Hard drive, HD, or HDD) is a non-volatile memory hardware device that permanently stores and retrieves data on a computer. A hard drive consists of one or more platters to which data is written using a magnetic head, all inside of an air-sealed casing. Internal hard disks reside in a drive bay, connect to the motherboard using an ATA, SCSI, or SATA cable, and are powered by a connection to the PSU (power supply unit).