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2. Isotopes of rubidium - Wikipedia

   en.wikipedia.org/wiki/Isotopes_of_rubidium

   Rubidium ( 37 Rb) has 36 isotopes, with naturally occurring rubidium being composed of just two isotopes; 85 Rb (72.2%) and the radioactive 87 Rb (27.8%). 87 Rb has a half-life of 4.92 × 1010 years. It readily substitutes for potassium in minerals, and is therefore fairly widespread. 87 Rb has been used extensively in dating rocks; 87 Rb ...

3. Ultraviolet - Wikipedia

   en.wikipedia.org/wiki/Ultraviolet

   Ultraviolet ( UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and ...

4. Suriname - Wikipedia

   en.wikipedia.org/wiki/Suriname

   Suriname ( / ˈsʊərɪnæm, - nɑːm / ⓘ SOOR-ih-NAM, -⁠NAHM, Dutch: [syːriˈnaːmə] ⓘ ), officially the Republic of Suriname ( Dutch: Republiek Suriname [reːpyˌblik ˌsyːriˈnaːmə] ), is a country in northern South America, sometimes considered part of the Caribbean and the West Indies. Situated slightly north of the equator ...

5. Dew point - Wikipedia

   en.wikipedia.org/wiki/Dew_point

   The dew point of a given body of air is the temperature to which it must be cooled to become saturated with water vapor. This temperature depends on the pressure and water content of the air. When the air is cooled below the dew point, its moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew. [1]

6. Duchy of Nassau - Wikipedia

   en.wikipedia.org/wiki/Duchy_of_Nassau

   It had been secularised in 1803 and passed into private ownership. In 1841 the site was put up for sale and the government made plans to turn the abbey into the first state-run home for the elderly and poor in Nassau. The Minister of Construction estimated the costs for the required renovations at 34,000 guilders. In 1842, the Duchy bought the ...

7. 80 Plus - Wikipedia

   en.wikipedia.org/wiki/80_Plus

   80 Plus. Logo. 80 Plus (trademarked 80 PLUS) is a voluntary certification program launched in 2004, intended to promote efficient energy use in computer power supply units (PSUs). Certification is acquirable for products that have more than 80% energy efficiency at 20%, 50% and 100% of rated load, and a power factor of 0.9 or greater at 100% load.