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Pigment of purple violets as pH indicator?
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If leaves reflect green light why isn't the inside of a leaf purple?
Started by John ChapmanBoard Physics, Astronomy & Cosmology |
Replies: 4 Views: 4727 |
20/06/2009 05:47:35 by Madidus_Scientia |
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What chemical would react with iron particles to produce a purple colour? |
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02/02/2016 16:38:56 by chiralSPO |
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My toilet seat turned purple/blue when my pregnant wife sat on it. Why?
Started by Lewis ThomsonBoard Physiology & Medicine |
Replies: 1 Views: 2515 |
02/02/2022 01:26:43 by wolfekeeper |
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Why might a nose bleed produce purple-coloured blood?
Started by chrisBoard Physiology & Medicine |
Replies: 1 Views: 13043 |
17/05/2017 21:50:37 by evan_au |
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Plants in Super Habitable Exoplanets Could Look Purple
Started by alfa015Board Physics, Astronomy & Cosmology |
Replies: 5 Views: 5110 |
09/02/2020 20:25:08 by evan_au |