The SI unit for radioactivity, the becquerel (Bq), is named after him. Roentgen discovered X-rays on November 8, 1895. The press reported this on January 5, 1896, shortly before Becquerel did his famous experiment. Thus radioactivity was discovered the following year but within a year of the discovery of X-rays.
Book Details. Book Description. A penetration test, also known as pentest, is a method of assessing computer and network security by replicating an attack on a computer system or network from the outside world and internal threats. With the increase of advanced hackers and threats to our virtual world, pentesting is an absolute necessity.
Virtual Directory. Definition - What does Virtual Directory mean? A virtual directory is a path or alias within a website that refers users to another directory where the actual data is hosted. The referred directory can be a physical directory on a local server's hard drive or a directory on another server (network share). The home directory is the root while other directories are virtual directories and are associated with it through aliases.