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In particle physics, this inequality permits a qualitative understanding of virtual particles which carry momentum, exchange by which and with real particles, is responsible for the creation of all known fundamental forces (more accurately known as fundamental interactions). Virtual photons (which are simply lowest quantum mechanical energy state of photons) are also responsible for electrostatic interaction between electric charges (which results in Coulomb law), for spontaneous radiative decay of exited atomic and nuclear states, for the Casimir force, for van der Waals bond forces and some other observable phenomena.

What results in Coulomb law?
Answer: electrostatic interaction between electric charges
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Jesuit missionary Eusebio Francisco Kino visited the Santa Cruz River valley in 1692, and founded the Mission San Xavier del Bac in 1700 about 7 mi (11 km) upstream from the site of the settlement of Tucson. A separate Convento settlement was founded downstream along the Santa Cruz River, near the base of what is now "A" mountain. Hugo O'Conor, the founding father of the city of Tucson, Arizona authorized the construction of a military fort in that location, Presidio San Agustín del Tucsón, on August 20, 1775 (near the present downtown Pima County Courthouse). During the Spanish period of the presidio, attacks such as the Second Battle of Tucson were repeatedly mounted by Apaches. Eventually the town came to be called "Tucson" and became a part of Sonora after Mexico gained independence from Spain in 1821.

What year did Mexico gain independence from Spain?
Answer: 1821
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Napoleon's triumph at Marengo secured his political authority and boosted his popularity back home, but it did not lead to an immediate peace. Bonaparte's brother, Joseph, led the complex negotiations in Lunéville and reported that Austria, emboldened by British support, would not acknowledge the new territory that France had acquired. As negotiations became increasingly fractious, Bonaparte gave orders to his general Moreau to strike Austria once more. Moreau and the French swept through Bavaria and scored an overwhelming victory at Hohenlinden in December 1800. As a result, the Austrians capitulated and signed the Treaty of Lunéville in February 1801. The treaty reaffirmed and expanded earlier French gains at Campo Formio. Britain now remained the only nation that was still at war with France.

Where did the negotiations with Austria led by Napoleon's brother take place?
Answer:
Lunéville