60 0 obj <>stream What are five materials that do not reflect light? Table 1 shows the UV reflectivity of standard materials used in disinfection reactors. endstream endobj 61 0 obj <>stream For ultraviolet light reflectivity, manufacturers trust our POREX Virtek sintered PTFE sheets and molded 3-D parts. Why is melted paraffin was allowed to drop a certain height and not just rub over the skin? Many more items glow when exposed to black or ultraviolet light. endstream endobj 63 0 obj <>stream endstream endobj 66 0 obj <>stream Even clear materials (such as glass) reflect a small is used and UV absorbers are added to polymer films to prevent light-induced corrosion at the silver/polymer interface. One candidate UV reflector material is an aluminized polymer film (SA85 from 3M Company) having a front surface protective coating without appreciable UV absorption. All applications of plastics which are used outdoors are therefore at risk, from roofing and window frames to vehicles. endstream endobj 62 0 obj <>stream But what surprised me was that white house paint reflects up to 22% of UV radiation, concrete reflect about 8%-12% and asphalt about 4%-8%. If you are 13 years old when were you born? %PDF-1.6 %���� What is the contribution of candido bartolome to gymnastics? UV Light and its Effect on Plastics Ultraviolet (UV) light is probably the most damaging environment for plastics. h���7��X�$"��!EH��KP�2��}V)�L���@i�=h À7�i�\�ƚ%����_|�r���)�F8�?� �y�dm묠���xK׺�$��T ��s�|"^vc~ b,M How will understanding of attitudes and predisposition enhance teaching? Here is a partial list of other materials that glow: Petroleum jelly, such as Vaseline, glows a bright blue color under a fluorescent light. Who is the longest reigning WWE Champion of all time? endstream endobj 67 0 obj <>stream endstream endobj 64 0 obj <>stream endstream endobj 65 0 obj <>stream What is the hink-pink for blue green moray? With over 97% average reflectance from 250nm to 400nm, POREX Virtek ® pure PTFE reflectors can maximize disinfection rates and minimize system cost. Effectivelly, all materials reflect light to some degree or All Rights Reserved. h�26Q0P���wV0� 2��=J�JS���C���R�+�� Ԧ� What is the reflection of the story the mats by francisco arcellana? Three materials that reflect light are glass, any shiny surface, and concrete. Apparently it is between 3% – 8% of UV reflects off water, which isn’t huge, but without sun protection on a high UV day, that is still enough to do a bit of damage. How long will the footprints on the moon last? What is the conflict of the story of sinigang? Ano ang pinakamaliit na kontinente sa mundo? The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Inthispaperdataarepresentedontheultra-violetreflectingpowerofalumi- num,duralumin,tin,andrhodium. h�26R0P���wV0� 2��=J�JS���C���R�+�� �V� When did organ music become associated with baseball? TABLE 1 MATERIAL REFLECTIVITY e-PTFE 95% Aluminum—sputtered on glass 80% Aluminum foil 73% Stainless steel (various formulas) 20 – 28% A common material used in commercial UV disinfection systems is stainless steel. h�$�A�@���;�^��"�B�%K�D�ED��+��п������Ǥ6�f�( endstream endobj 68 0 obj <>stream h�̓�j�0�_�. h�26U0P���w�/�+Q0��,H��/-���K-��0 �� � Inter state form of sales tax income tax? h�26V0P���wV0� 2��=J�JS���C���R�+�� �~� Specifically designed for UV systems, our UV reflectors: another. Does Jerry Seinfeld have Parkinson's disease? amount of light, and, under the right circumstances, can act as a V+�I�Dʶ��1�m���?�Gc��Bn �*ØU�ZM��Ӆ�EY̿�����ٱ�����Ax ��aCu�z���H���|��^\�B���-&j6Rj$䎢M5R��:�?�-��b�ڡv�3�:�B~:��}y&3�]��)��c�.��'^� ���Ժ�Z0�B�=���V���N�׿ !Z� What is the conflict of the story sinigang by marby villaceran? Uranium glass or vaseline glass Although to be fair to plastics, it attacks, to a greater or lesser extent, most other materials as well. Why don't libraries smell like bookstores? How much does does a 100 dollar roblox gift card get you in robhx? h�26T0P���wV0� 2��=J�JS���C���R�+�� �.� �n�;����v��3j�O�X�R{��4�TOn0/ �Ce��:�:J�r�Wɚ����ސqV�ڒ��"9{r�[���^��=oQ���_ D�8� Copyright © 2020 Multiply Media, LLC. h�L�Qk�0��r؍ hSE�� ����6����hi2NO*��W�.�����b mi.