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2. Polytetrafluoroethylene - Wikipedia

   en.wikipedia.org/wiki/Polytetrafluoroethylene

   PTFE is a thermoplastic polymer, which is a white solid at room temperature, with a density of about 2200 kg/m 3 and a melting point of 600 K (327 °C; 620 °F). [20] It maintains high strength, toughness and self-lubrication at low temperatures down to 5 K (−268.2 °C; −450.7 °F), and good flexibility at temperatures above 194 K (−79.15 ...

3. Ross Perot - Wikipedia

   en.wikipedia.org/wiki/Ross_Perot

   Ross Perot was born in Texarkana, Texas in 1930, the son of Lula May (née Ray) and Gabriel Ross Perot, [3] a commodity broker specializing in cotton contracts. [4] [5] He had an older brother, Gabriel Perot Jr., who died as a toddler. [6]

4. 50–40–90 club - Wikipedia

   en.wikipedia.org/wiki/50–40–90_club

   During his second stint with the Phoenix Suns, Steve Nash achieved the 50-40-90 feat in four separate seasons, the most of any player.. The 50–40–90 club is a statistical achievement used to distinguish players as excellent shooters in the National Basketball Association (NBA), NBA G League, Women's National Basketball Association (WNBA), and men's college basketball.

5. Rayon - Wikipedia

   en.wikipedia.org/wiki/Rayon

   Tencel revenues for 1993 were estimated as likely to be £50 million. A second plant in Mobile was planned. [25] By 2004, production had quadrupled to 80,000 tons. [23] Lenzing began a pilot plant in 1990, [20] and commercial production in 1997, with 12 metric tonnes/year made in a plant in Heiligenkreuz im Lafnitztal, Austria.

6. Pareto principle - Wikipedia

   en.wikipedia.org/wiki/Pareto_principle

   The Pareto principle may apply to fundraising, i.e. 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity [1] [2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").

7. List of chemical elements - Wikipedia

   en.wikipedia.org/wiki/List_of_chemical_elements

   118 chemical elements have been identified and named officially by IUPAC.A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).