Definitions - f

Falsifiability Rule

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Feed-in Tariff

A renewable energy support mechanism used in certain countries, where producers are rewarded at a nationally prescribed level for renewable electricity fed into the grid

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Firm Power

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First Order Consumers

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Fixed Tilt Array

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Flexible Solar Panels

Flexible Solar Panels are solar panels which can be bent or curved without an adverse impact on their viability as a solar panel.

This makes them suitable for portable usage as they can be rolled up easily when not in use. 

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Flexible-fuel Vehicle

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Float Service

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Flood Forecasting

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Flood Peak

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Floor Cladding

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Flow Battery

A flow battery, or a redox flow battery (after reduction–oxidation), is a type of rechargeable battery where rechargeability is provided by two chemical components dissolved in liquids contained within the system and separated by a membrane.

One of the biggest advantages of flow batteries is that they can be almost instantly recharged by replacing the electrolyte liquid, while simultaneously recovering the spent material for re-energization.

Different classes of flow cells (batteries) have been developed, including redox, hybrid and membraneless. The fundamental difference between conventional batteries and flow cells is that energy is stored as the electrode material in conventional batteries but as the electrolyte in flow cells.

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Flush Out

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Fly Ash

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Foil Insulation

Foil insulation is a thin metallic film stretched over a surface to reduce heat transmission through a space by primarily radiated means. Often found in roof spaces. Some foils can come with a foam backing to give it extra strength and provide additional insulation against direct heat transmission.

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Food Allergy

A food allergy is an adverse immune response to a food protein. They are distinct from other adverse responses to food, such as food intolerance, pharmacological reactions, and toxin-mediated reactions.

A protein in the food is the most common allergic component. These kinds of allergies occur when the body's immune system mistakenly identifies a protein as harmful. Some proteins or fragments of proteins are resistant to digestion and those that are not broken down in the digestive process are tagged by the Immunoglobulin E (IgE). These tags fool the immune system into thinking that the protein is harmful. The immune system, thinking the organism (the individual) is under attack, triggers an allergic reaction. These reactions can range from mild to severe. Allergic responses include dermatitis, gastrointestinal and respiratory distress, including such life-threatening anaphylactic responses as biphasic anaphylaxis and vasodilation; these require immediate emergency intervention. Non-food protein allergies include latex sensitivity. Individuals with protein allergies commonly avoid contact with the problematic protein. Some medications may prevent, minimize or treat protein allergy reactions.

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Food Chain

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Food Intolerance

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Food Miles

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Food Web

The complex inter meshing of individual food chains in an ecosystem.

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Food Web

A food web is a system of interlocking and interdependent food chains.

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Forcing Mechanism

A process that alters the energy balance of the climate system, i.e. changes the relative balance between incoming solar radiation and outgoing infrared radiation from Earth. Such mechanisms include changes in solar irradiance, volcanic eruptions, and enhancement of the natural greenhouse effect by emission of carbon dioxide. See also Radiative Forcing.

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Forest Dieback

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Forest Residues

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Fossil Fuel

A hydrocarbon deposit, such as petroleum, coal, or natural gas, derived from living matter of a previous geologic time and used for fuel.

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Hydraulic fracturing, often called fracking, fracing or hydrofracking, is the process of initiating and subsequently propagating a fracture in a rock layer, employing the pressure of a fluid as the source of energy. The fracturing, known as a frack job (or frac job), is done from a wellbore drilled into reservoir rock formations, in order to increase the extraction rates and ultimate recovery of oil and natural gas.

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Free Convection

Convection triggered by intense solar heating of the earth's surface.

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Fresnel Lens

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Friable Asbestos

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Fuel Cell

A cell producing an electric current direct from a chemical reaction.

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Fugitive Emissions

Emissions from leaks in the mining, exploration or transport of fossil fuels, such as gas pipeline leaks.

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Functional Diversity

The characteristic of a place where a variety of different activities (economic, political, social) occur; most often associated with urban places.

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Furling Tail

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