Waxbows - the incredible beauty of a blown out candle:
▻http://blogs.scientificamerican.com/but-not-simpler/2013/09/09/waxbows-the-incredible-beauty-of-a-blown-out-candle
Waxbows - the incredible beauty of a blown out candle:
▻http://blogs.scientificamerican.com/but-not-simpler/2013/09/09/waxbows-the-incredible-beauty-of-a-blown-out-candle