| 词汇 | ultraviolet-protection-factor |
| 释义 | ultraviolet protection factor noun[ C ] (alsoUltraviolet Protection Factor)uk /ʌl.trəˌvaɪə.lət prəˈtek.ʃən ˌfæk.tər/ us /ʌl.trəˌvaɪ.ə.lət prəˈtek.ʃən ˌfæk.t̬ɚ/(alsoUV protection factor); (abbreviationUPF) a measurement of how effective a fabric is in preventing harmful ultraviolet radiation from reaching the skin: The ultraviolet protection factor, used to label fabric, indicates how much of the sun's ultraviolet radiation is absorbed. The UPF (Ultraviolet Protection Factor) specified on the UV protective clothing shows how long a person can stay in the sun wearing this clothing without suffering damage to their health. Clothes in sun-protective fabrics should have labels that show a UV protection factor (UPF). UPF (ultraviolet protection factor), similar to SPF (sun protection factor) used to rate sunscreens, measures the UV rays that pass through fabrics when exposed to UV radiation. In the present study, the ultraviolet protection factor of various fabrics with different structures is assessed. Miscellaneous units of measurement acre acreage caloric dioptre farad fathom firkin flashpoint hectare joule MHz newton radian refractive index röntgen Scoville scale SI unit sievert sun protection factor watt You can also find related words, phrases, and synonyms in the topics: Protection and protectors Physics: radiation & radioactivity |
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