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.
Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Penetration(noun) the act or process of penetrating, piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult. 2  Penetration(noun) acuteness; insight; sharp discoverment; sagacity; as, a person of singular penetration.