Nimrod and the tower of babel is a metaphor for a Penning Trap.

-Nimrod is a biblical figure mentioned in the Book of Genesis and Books of Chronicles. The son of Cush and therefore a great-grandson of Noah, Nimrod was described as a king in the land of Shinar. The Bible states that he was "a mighty hunter before the Lord [and]... began to be mighty in the earth". Later extra-biblical traditions identified Nimrod as the ruler who commissioned the construction of the Tower of Babel, which led to his reputation as a king who was rebellious against God. Nimrod has not been attested in any historic, non-biblical registers, records or king lists, including those of Mesopotamia itself which are both considerably older and more diverse than the later biblical texts. Historians have failed to match Nimrod with any historically attested figure, or find any historical, linguistic or genetic link between Mesopotamia and the kingdom of Cush, although one recent suggestion among the exclusively Mesopotamian figures is Naram-Sin of Akkad, grandson of Sargon.
-A Penning trap is a device for the storage of charged particles using a homogeneous magnetic field and a quadrupole electric field. It is mostly found in the physical sciences and related fields of study as a tool for precision measurements of properties of ions and stable subatomic particles, like for example mass, fission yields and isomeric yield ratios. One initial object of study were the so-called geonium atoms, which represent a way to measure the electron magnetic moment by storing a single electron. These traps have been used in the physical realization of quantum computation and quantum information processing by trapping qubits. Penning traps are in use in many laboratories worldwide, including CERN, to store and investigate anti-particles such as antiprotons. The main advantages of Penning traps are the potentially long storage times and the existence of a multitude of techniques to manipulate and non-destructively detect the stored particles.

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