GC: n CT: The halogens are five non-metallic elements found in group 17 of the periodic table. The term halogen means “salt-former” and compounds containing halogens are called “salts”. All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1. The halogens exist, at room

GC: adj CT: Haptics (pronounced HAP-tiks) is the science of applying touch (tactile) sensation and control to interaction with computer applications. (The word derives from the Greek haptein meaning “to fasten.”) By using special input/output devices (joysticks, data gloves, or other devices), users can receive feedback from computer applications in

GC: n CT:A hashtag is the pound sign. The sharp note in musical notation. A tic tac toe board. This: #. When it comes to social media, the hashtag is used to draw attention, organize, promote, and connect. They got their start on Twitter as a way of making it easier for

GC: n CT: On the salt marshes in locations like Pubnico the hay harvester also had to work with the tides. The hay had to be cut and the haystacks made between flood tides. The best time for cutting hay was early in the morning. The dew lubricated the hay

GC: n CT: Hazardous waste is waste that is dangerous or potentially harmful to our health or the environment. Hazardous wastes can be liquids, solids, gases, or sludges. They can be discarded commercial products, like cleaning fluids or pesticides, or the by-products of manufacturing processes. S: http://www.epa.gov/osw/hazard/ (last access: 2

GC: n CT: At the start of a SHP project in an existing infrastructure, a first issue is to define if the existing penstocks and channels are suitable for electricity production, which implies mainly to check their mechanical resistance (nominal pressure for a penstock) and head losses. In general, head

GC: n CT: Heat and Thermal Energy: Heat – an energy transfer that occurs because of a difference in temperature. Internal Energy – the energy a substance has because of its temperature. Energy may be transferred between two objects without heat flow. Example: rubbing two coins together. Both internal energies

GC: n CT: The general function of a heat exchanger is to transfer heat from one fluid to another. The basic component of a heat exchanger can be viewed as a tube with one fluid running through it and another fluid flowing by on the outside. There are thus three

GC: n CT: What is heat insulating materials？ “Heat insulating material” means a material to insulate heat literally. Utilization of heat insulating material is spreading over various fields from ultra-low temperature applications（-253°C) of using liquid hydrogen for fuel to high temperature applications（above 2,000°C）that of nuclear reactors. Why do such various

CG: n CT: A heat pump is an electrical device that extracts heat from one place and transfers it to another. The heat pump is not a new technology; it has been used in Canada and around the world for decades. Refrigerators and air conditioners are both common examples of

GC: n CT: When starting the computer, the following error appears on the screen: The system has detected that a cooling fan is not operating correctly. Continued operation is not recommended and may cause unpredictable behavior that could result in random shutdown, data loss or possible system damage. The system

See HUMANTERM: https://humantermuem.es/heat-wave

GC: n CT: Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria: Coefficient of expansion – the fractional change in length (or

GC: n CT: Turning on a light indoors while the sun is shining outdoors creates frustration for an environmentalist. Knowing that a simple flick of the light switch causes a chain of energy production, transportation and conversion just seems crazy when the sun is pouring down free photons outside only

GC: n CT: “Because the Higgs field would be responsible for mass, the very fact that the fundamental particles do have mass is regarded by many physicists as an indication of the existence of the Higgs field. We can even take all our data on particle physics data and interpret

GC: n CT: Electricity is supplied to consumers through the National Grid at a very high voltage to reduce energy losses during transmission. Transformers are used to increase or decrease the voltage of the supply. Electricity is charged in units. One unit is equivalent to one kilowatt of electricity used

GC: n CT: Deltares software gives users rapid access to the latest advances in the area of water and the subsurface. Out in the field, it generates new research issues and produces new insights. Together with users and knowledge partners, we engage in a constant cycle of application and development

GC: n CT: Holography, means of creating a unique photographic image without the use of a lens. The photographic recording of the image is called a hologram, which appears to be an unrecognizable pattern of stripes and whorls but which—when illuminated by coherent light, as by a laser beam—organizes the

GC: n CT: Holography is the process of producing holograms and, although they are recorded on photographic film, the process is quite different from normal photography. Holography uses light interference or wave optics, whereas normal photography uses geometric optics. S: PHYS – https://bit.ly/2BbFUeK (last access: 12 December 2018) N: 1.

GC: n CT: Automation is still a nascent technology in areas that could potentially revolutionise our professional and private lives in dramatic ways. Innovations in home automation, for example, could allow us to use time and resources more efficiently as all electrical appliances and electronic devices will be fully integrated

GC: n CT: Biomass boilers tend to be larger than the gas or oil equivalent. They are generally more suitable for people not connected to mains gas who have some space for storage. You will need about 6-7 cubic metres of space near where the boiler is sited to store

CG: n CT: Direct solar radiations as well as indirect solar radiation (wind, rain, melting snow) are the most significant influencing factors for this kind of ground energy system due to the low installation depths. In winter time when the solar application of energy is reduced the system needs the

GC: n CT: If a part of the solar cell is shaded the cell can heat up to such extreme temperatures that the cell material as well as the encapsulation (EVA) and backsheet will be permanently damaged. A so called hot spot develops. Under normal operation condition the cell generate

GC: n CT: The Government is aware that some local authorities have introduced, or plan to introduce, a charge to anybody accessing certain household waste recycling centres (also known as civic amenity sites, tips, and dumps) to dispose of household waste and/or recycling. In its 2011 Waste Review, the Government