langmuir effect
21weather modification — Deliberate or inadvertent alteration of atmospheric conditions by human activity, sufficient to modify the weather on a local or regional scale. Deliberate alterations include covering plants to keep them warm at night, seeding clouds to induce… …
22Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
23Coffee ring — In physics, a coffee ring is a pattern left by a puddle of particle laden liquid after it evaporates. The phenomenon is named for the characteristic ring like deposit along the perimeter of a spill of coffee. It is also commonly seen after… …
24Project Stormfury — was an attempt to weaken tropical cyclones by flying aircraft into them and seeding with silver iodide. The project was run by the United States Government from 1962 to 1983.The hypothesis was that the silver iodide would cause supercooled water… …
25Cyclol — Figure 1: In the classic cyclol reaction, two peptide groups are linked by a N C’ bond, converting the carbonyl oxygen into a hydroxyl group. Although this reaction occurs in a few cyclic peptides, it is disfavored by free energy, mainly because… …
26Hipótesis del ciclol — Reacción del ciclol clásica. Dos grupos peptídicos se unen por enlace N C , convirtiendo el oxígeno carbonílico en una grupo hidroxilo. Si bien esta reacción ocurre en unos pocos péptidos cíclicos, es desfavor …
27Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… …
28Atom — The atom is the smallest unit of an element that retains the chemical properties of that element. An atom has an electron cloud consisting of negatively charged electrons surrounding a dense nucleus. The nucleus contains positively charged… …
29Space charge — is a concept in which excess electric charge is treated as a continuum of charge distributed over a region of space (either a volume or an area) rather than distinct point like charges. This model typically applies when charge carriers have been… …
30(C6H11NO)n — Poly(N isopropylacrylamide) Structure du poly(N isopropylacrylamide). La structure entre crochets constitue, en se répétant, le squelette des chaînons du polymère. Le poly(N isopropylacrylamide) (abrégé en polyNIPAM, PNIPAM ou PNIPAAm) est un… …
