- hy|drop|o|nist
- hy|drop|o|nist «hy DROP uh nihst», noun.a person skilled in hydroponics.
Useful english dictionary. 2012.
Useful english dictionary. 2012.
Oil-drop experiment — The purpose of Robert Millikan and Harvey Fletcher s oil drop experiment (1909) was to measure the electric charge of the electron. They did this by carefully balancing the gravitational and electric forces on tiny charged droplets of oil… … Wikipedia
Oil drop experiment — Millikan s setup for the oil drop experiment The oil drop experiment was an experiment performed by Robert Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron). The experiment entailed… … Wikipedia
hydroponics — hydroponic, adj. hydroponically, adv. hydroponist /huy drop euh nist/, hydroponicist, n. /huy dreuh pon iks/, n. (used with a sing. v.) the cultivation of plants by placing the roots in liquid nutrient solutions rather than in soil; soilless… … Universalium
hydroponics — hy•dro•pon•ics [[t]ˌhaɪ drəˈpɒn ɪks[/t]] n. agr. (used with a sing. v.) the cultivation of plants by placing the roots in liquid nutrient solutions rather than in soil; soilless growth of plants • Etymology: 1935–40; hydro I+ (geo ) ponics hy… … From formal English to slang
Nanometrology — NIST Next Generation Nanometrology research.[1] Nanometrology is a subfield of metrology, concerned with the science of measurement at the nanoscale level. Nanometrology has a crucial role in order to produce nanomaterials and devices w … Wikipedia
Conversion of units — is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Contents 1 Techniques 1.1 Process 1.2 Multiplication factors … Wikipedia
History of timekeeping devices — For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. The Ancient Egyptians divided the day into two 12 hour periods, and… … Wikipedia
Elementary charge — Definition: Charge of a proton Symbol e Value in Coulombs: 1.602176565(35)×10−19 C … Wikipedia
Parts-per notation — One part per trillion (1 ppt) is a proportion equivalent to one twentieth of a drop of water diluted into an Olympic size swimming pool. In science and engineering, the parts per notation is a set of pseudo units to describe small values of… … Wikipedia
Atom — 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… … Wikipedia