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Topic: Phosphene

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Visual perception

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	Subterra Community - karst, caving, speleologi dan cave indonesia : Powered by Anu Network (Site not responding. Last check: 2007-10-12)
		Ternyata gas phosphene yang dihasilkan karbit mengandung racun, yang dalam kadar tertentu dapat berbahaya.
		That is it produces 0.06% (600 ppm) of phosphene relative to the amount of acetylene.
		Since the phosphene produced is assumed to be 600 ppm of the acetylene, that gives us 0.000524 moles of phosphene, which occupies 0.0117 liters (0.0000117 cubic meters)at STP.
	www.subterra.or.id /subterra.php?action=lihat&isi_id=47 (2541 words)

	Read about Sun at WorldVillage Encyclopedia. Research Sun and learn about Sun here! (Site not responding. Last check: 2007-10-12)
		Looking directly at the Sun when it is high in the sky causes temporary
		bleaching of the photosensitive pigments in the retina, which makes phosphene visual artifacts and temporary partial blindness.
		Direct viewing of the Sun with the naked eye delivers about 4 milliwatts of sunlight to the retina that is in the solar image, heating it up and potentially (though not normally) damaging it.
	encyclopedia.worldvillage.com /s/b/Sun (1992 words)

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