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==Other Items== | ==Other Items== | ||
===Glasses=== | ===Glasses=== | ||
# Many poskim allow wearing glasses that will darken when you go out into the sun and don't think it's a problem of coloring the lenses. <ref> Shemirat [[Shabbat]] Kehilchita 18: footnote 70, Yalkut Yosef [[Shabbat]] 3: pg. 377, Sh"t Bitzel Hachochma 4:4, [http://www.dailyhalacha.com/m/halacha.aspx?id=605 Rabbi Eli Mansour]. | # Many poskim allow wearing glasses that will darken when you go out into the sun and don't think it's a problem of coloring the lenses. <ref> Igrot Moshe 3:45, Shemirat [[Shabbat]] Kehilchita 18: footnote 70, Yalkut Yosef [[Shabbat]] 3: pg. 377, Sh"t Bitzel Hachochma 4:4, [http://www.dailyhalacha.com/m/halacha.aspx?id=605 Rabbi Eli Mansour]. | ||
<br /> Shemirat Shabbat Kehilchita 18 footnote 70 writes that wearing the glasses doesn’t constitute tzoveya because the coloring is only temporary and isn’t considered as though a person is doing any action by simply wearing them in the sun. <br /> Orchot Shabbos 15:96 questions this second reasoning based on the Gemara Sanhedrin 77a, not considering this to be grama. Rather he permits it because dyeing means adding an external dye to a material to give a color; in this case, with photosensitive glasses, the glass itself changes colors and no external substance is being added. <br /> | <br /> Shemirat Shabbat Kehilchita 18 footnote 70 writes that wearing the glasses doesn’t constitute tzoveya because the coloring is only temporary and isn’t considered as though a person is doing any action by simply wearing them in the sun. <br /> Orchot Shabbos 15:96 questions this second reasoning based on the Gemara Sanhedrin 77a, not considering this to be grama. Rather he permits it because dyeing means adding an external dye to a material to give a color; in this case, with photosensitive glasses, the glass itself changes colors and no external substance is being added. <br /> | ||
see [http://www.yutorah.org/lectures/lecture.cfm/774945/Rabbi_Aryeh_Lebowitz/Ten_Minute_Halacha_-_Crocs_and_Glasses_that_Change_Color_in_the_Sun Rabbi Ayreh Lebowitz] for more on this </ref> | see [http://www.yutorah.org/lectures/lecture.cfm/774945/Rabbi_Aryeh_Lebowitz/Ten_Minute_Halacha_-_Crocs_and_Glasses_that_Change_Color_in_the_Sun Rabbi Ayreh Lebowitz] for more on this </ref> | ||
==Links== | ==Links== |