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  2. UV coloration in flowers - Wikipedia

    en.wikipedia.org/wiki/UV_coloration_in_flowers

    A common phenotype of UV coloration is the “bulls-eye” pattern where a flower reflects UV light at the ends of the petals and absorbs UV light in the center. [4] This acts as a guide for pollinators to locate and find pollen. [4] Other flowers add the contrast between their reproductive parts (anthers and pistils) and their petals. [7]

  3. Photo-oxidation of polymers - Wikipedia

    en.wikipedia.org/wiki/Photo-oxidation_of_polymers

    Most of the commonly used glass types are highly resistant to UV radiation. Explosion protection lamps for oil rigs for example can be made either from polymer or glass. Here, the UV radiation and rough weathers belabor the polymer so much, that the material has to be replaced frequently.

  4. Artificial plants - Wikipedia

    en.wikipedia.org/wiki/Artificial_plants

    Flower bouquet with prepared rose blossoms and silk flowers; The fifth is to mount the flower on a stalk of brass or iron wire wrapped with suitably colored material, and to add the leaves to complete the spray. [1] While the material most often used to make artificial flowers is polyester fabric, both paper and cloth flowers are also made with ...

  5. Ultraviolet - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet

    For clothing, the ultraviolet protection factor (UPF) represents the ratio of sunburn-causing UV without and with the protection of the fabric, similar to sun protection factor (SPF) ratings for sunscreen. [citation needed] Standard summer fabrics have UPFs around 6, which means that about 20% of UV will pass through. [citation needed]

  6. Trichome - Wikipedia

    en.wikipedia.org/wiki/Trichome

    Plants may use trichomes in order to deter herbivore attacks via physical and/or chemical means, e.g. in specialized, stinging hairs of Urtica (Nettle) species that deliver inflammatory chemicals such as histamine. Studies on trichomes have been focused towards crop protection, which is the result of deterring herbivores (Brookes et al. 2016). [24]

  7. Leontopodium nivale - Wikipedia

    en.wikipedia.org/wiki/Leontopodium_nivale

    Leontopodium nivale, commonly called edelweiss (English: / ˈ eɪ d əl v aɪ s / ⓘ AY-dəl-vyce; German: Edelweiß [ˈeːdl̩vaɪs] ⓘ or Alpen-Edelweiß), is a mountain flower belonging to the daisy or sunflower family Asteraceae. The plant prefers rocky limestone places at about 1,800–3,400 metres (5,900–11,200 ft) altitude.

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