Added: 2 years ago
From: Sciencefilms
Views: 3,059
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  • Dr. Sella, you're an absolute genius!

  • i was in your lecture today was so good! (Alevel student)

  • titanium dioxide isn't nearly as white as people's fake white teeth these days. When teeth greet me 5 minutes before the person they're attached to do, it's damn scary. Enough with the laser blasting of the "pearlies" I mean pearlies don't cut it anymore. Enough with the titanium whites. I'd much rather look at someone's eyes when I'm in a conversation than their mouth and their blinding teeth that make snow look yellow drab and putrid. I'm tired. I don't usually go on so. Cheers.

  • Very interesting... We just leaned about the spectrum of light in our class and i was wondering why there is white light

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