Tag: science & technology

Ancient Chinese civilizations were among the earliest to use fingerprints for identification purposes, dating back to at least the Qin Dynasty (221-206 BCE) for official documents and business transactions.

Johannes Purkinje, a Czech physiologist, published the first fingerprint classification system in 1823, identifying nine basic patterns. This predated the more famous Henry System.

Before fingerprinting, Bertillonage or anthropometry was used - a system developed by Alphonse Bertillon that measured various body dimensions like arm length, head size, and other physical characteristics.

The Henry Classification System, developed by Edward Henry in the late 1890s, is the most widely used fingerprint classification system worldwide and forms the basis for modern automated systems.

Ultraviolet light can reveal certain invisible fingerprints, particularly those made with substances that fluoresce under UV or on surfaces where UV illumination creates contrast. This is a common forensic technique.

CTRL+SHIFT+* (asterisk) is the Excel shortcut to select all cells with data around the current cell (the current region). This is a standard Excel selection shortcut.

SHIFT+arrow key extends the selection by one cell in the direction of the arrow pressed. This is the basic method for expanding selections in spreadsheet applications.