| fosforas |
phosphorus (A nonmetallic element used to manufacture phosphoric acid, in phosphor bronzes, incendiaries, pyrotechnics, matches, and rat poisons; the white or yellow allotrope is a soft waxy solid, soluble in carbon disulfide, insoluble in water and alcohol, and is poisonous and self-igniting in air; the red allotrope is an amorphous powder, insoluble in all solvents and is nonpoisonous; the black allotrope comprises lustrous crystals similar to graphite, and is insoluble in most solvents) |
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| fotocheminė medžiaga |
photochemical agent (Agents which trigger off photochemical reactions) |
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| fotocheminė reakcija |
photochemical reaction (Chemical reaction which is initiated by light of a specific wavelength. In an environmental context an example is the potential action of ultraviolet light on CFCs which may bring about the detrimental degradation of the ozone layer. Photochemical reactions initiate the process of photosynthesis in which plants convert carbon dioxide into sugars, which are incorporated into cell materials) |
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| fotocheminė tarša |
photochemical pollution (Air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust) |
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| fotocheminis efektas |
photochemical effect (The result or consequence of a chemical reaction caused by light or ultraviolet radiation) |
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| fotocheminis oksidantas |
photochemical oxidant |
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| fotocheminis oksidantas |
photooxidant |
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| fotocheminis oksidatorius |
photochemical oxidant (Any of the chemicals which enter into oxidation reactions in the presence of light or other radiant energy) |
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| fotocheminis produktas |
photochemical product (Degradation products that are produced by the action of light radiation) |
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| fotocheminis smogas |
photochemical smog (A combination of fog and chemicals that come from automobile and factory emissions and is acted upon by the action of the sun. Nitrogen dioxide, in the presence of the sun and some hydrocarbons, is turned into nitric oxide and atomic oxygen. The atomic oxygen reacts with the oxygen molecules and other constituents of automobile exhaust fumes to form a variety of products including ozone. The ozone is harmful in itself and is also implicated in a highly complex series of continuing reactions. As long as there is ozone or nitrogen dioxide and sunlight present, other undesirable reactions will occur) |
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| fotografija |
photography (The process of forming visible images directly or indirectly by the action of light or other forms of radiation on sensitive surfaces) |
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| fotogrametrija |
photogrammetry (The process of making measurements from photographs, used especially in the construction of maps from aerial photographs and also in military intelligence, medical and industrial research, etc.) |
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| fotosintezė |
photosynthesis (The process by which plants transform carbon dioxide and water into carbohydrates and other compounds, using energy from the sun captured by chlorophyll in the plant. Oxygen is a by-product of the process. Photosynthesis is the essence of all plant life (autotrophic production) and hence of all animal life (heterotrophic production) on the planet Earth. The rate of photosynthesis depends on climate, intensity and duration of sunlight, available leaf area, soil nutrient availability, temperature, carbon dioxide concentration, and soil moisture regimes) |
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| fotoskilimas |
photodegradation (The capability of being decomposed by prolonged exposure to light) |
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| fotovoltinė energija |
photovoltaic energy |
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| fotovoltinė energija |
photovoltaic solar energy |
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| freonas |
freon (Trade name for a group of polyhalogenated hydrocarbons containing fluorine and chlorine; an example is trichlorofluoromethane) |
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| freonas 22 |
R-22 |
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| freonas 22 |
chlorodifluoromethane |
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| freonas 22 |
difluorochloromethane |
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