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.
Wiktionary(0.00 / 0 votes)Rate this definition: 1  penetration(Noun) The act of penetrating something. 2  penetration(Noun) Specifically, the insertion of the penis (or similar object) during sexual intercourse. 3  penetration(Noun) The act of penetrating a given situation with the mind or faculties; perception, discernment.