a superlens, or super lens, is a lens which uses metamaterials to go beyond the diffraction limit.the diffraction limit is a feature of conventional lenses and microscopes that limits the fineness of their resolution. many lens designs have been proposed that go beyond the diffraction limit in some way, but constraints and obstacles face each of them.
the word 'titration' descends from the french word tiltre 1543 , meaning the proportion of gold or silver in coins or in works of gold or silver; i.e., a measure of fineness or purity. tiltre became titre, which thus came to mean the 'fineness of alloyed gold', and then the 'concentration of a substance in a given sample'.
slip velocity between gas and solid is significantly reduced at the cost of less homogeneous heat distribution. annular fluidized bed afb . a large nozzle at the center of a bubble bed introduces gas as high velocity achieving the rapid mixing zone above the surrounding bed comparable to that found in the external loop of a cfb.
a solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon. it is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light.. individual solar cell devices can be .
wikipedia:wikiproject chemistry/lists of pages/chemistry articles . 7075 aluminium alloy 7079 aluminium alloy a value a-frame complex a. ian scott a15 phases a3 coupling reaction aa'-graphite aag gold medal acs applied . desymmetrization detackifier detailed balance detection limit detergent determination of equilibrium constants detonation .
a quartz crystal microbalance qcm also known as quartz microbalance qmb , sometimes also as quartz crystal nanobalance qcn measures a mass variation per unit area by measuring the change in frequency of a quartz crystal resonator. the resonance is disturbed by the addition or removal of a small mass due to oxide growth/decay or film deposition at the surface of the acoustic resonator.
wikipedia:wikiproject chemistry/lists of pages/chemistry all pages . 7075 aluminium alloy 7079 aluminium alloy a value a-frame complex a. ian scott a15 phases a3 coupling reaction aa'-graphite aag gold medal acs applied . desymmetrization detackifier detailed balance detection limit detergent determination of equilibrium constants .
solar cell efficiency refers to the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity by the solar cell.. the efficiency of the solar cells used in a photovoltaic system, in combination with latitude and climate, determines the annual energy output of the system.for example, a solar panel with 20% efficiency and an area of 1 m 2 will produce 200 .
a galvanometer is an electromechanical instrument used for detecting and indicating an electric current.a galvanometer works as an actuator, by producing a rotary deflection of a 'pointer' , in response to electric current flowing through a coil in a constant magnetic field.early galvanometers were not calibrated, but their later developments were used as measuring instruments, called .
humidity is the concentration of water vapour present in the air. water vapour, the gaseous state of water, is generally invisible to the human eye. humidity indicates the likelihood for precipitation, dew, or fog to be present. the amount of water vapour needed to achieve saturation increases as the temperature increases.
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the ultracentrifuge is a centrifuge optimized for spinning a rotor at very high speeds, capable of generating acceleration as high as 1 000 000 g approx. 9 800 km/s² . there are two kinds of ultracentrifuges, the preparative and the analytical ultracentrifuge.
humidity plays an important role for surface life. for animal life dependent on perspiration to regulate internal body temperature, high humidity impairs heat exchange efficiency by reducing the rate of moisture evaporation from skin surfaces. this effect can be calculated using a heat index table, also known as a humidex
the principle of the kinetic impactor mitigation method is that the neo or asteroid is deflected following an impact from an impactor spacecraft. the principle of momentum transfer is used, as the impactor crashes into the neo at a very high velocity of 10 km/s 36,000 km/h; 22,000 mph or more.