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The Treaty on the Final Settlement with Respect to Germany ( German: Vertrag über die abschließende Regelung in Bezug auf Deutschland [a] ), more commonly referred to as the Two Plus Four Agreement ( German: Zwei-plus-Vier-Vertrag [b] ), is an international agreement that allowed the reunification of Germany in October 1990.
Negative refraction. Negative refraction is the electromagnetic phenomenon where light rays become refracted at an interface that is opposite to their more commonly observed positive refractive properties. Negative refraction can be obtained by using a metamaterial which has been designed to achieve a negative value for (electric) permittivity ...
The partial sums of the series 1 + 2 + 3 + 4 + 5 + 6 + ⋯ are 1, 3, 6, 10, 15, etc.The nth partial sum is given by a simple formula: = = (+). This equation was known ...
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e. The triboelectric effect (also known as triboelectricity, triboelectric charging, triboelectrification, or tribocharging) describes electric charge transfer between two objects when they contact or slide against each other. It can occur with different materials, such as the sole of a shoe on a carpet, or between two pieces of the same material.
Senate Majority Leader Chuck Schumer (D-N.Y.) said that former President Trump’s choice of Sen. JD Vance (R-Ohio) as his running mate is “one of the best things” that he has done for Democrats.
Taxes. The Internal Revenue Service (IRS) charges a service fee on all credit card transactions, ranging from 1.82% to 1.98%. While that may not sound like a lot, it’s far cheaper to just pay ...
Beyond the Standard Model. In particle physics, CP violation is a violation of CP-symmetry (or charge conjugation parity symmetry ): the combination of C-symmetry ( charge conjugation symmetry) and P-symmetry ( parity symmetry). CP-symmetry states that the laws of physics should be the same if a particle is interchanged with its antiparticle (C ...