Sunscreen - Periodic Table of Videos
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Uploaded by periodicvideos on Jan 3, 2012
The Professor - donning his clip-on shades - is at Bondi Beach in Australia for a discussion about sunscreen.
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Periodic Videos films are by video journalist Brady Haran
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Top Comments
All Comments (207)
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LIKE A PROF.
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2:31 girl scratching ass :D !
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he rubs the lotion on the skin or else his skin will burn again?
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I love the intro :P
Born to be wild.
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black people dont get sunburn no fair !!!!
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>So your skin still looks pink
Not everyone is white!
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Lots if good facts!!!!
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@HowlWolfieeee you need to go on the sixty symbols channel for physics they have alot of videos on quantum mechanical effects
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@HowlWolfieeee This channel is about Chemistry actually.
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Most moles are unlikely to change into a malignant melanoma. Malignant melanoma change rapidly, which is why it is important to keep an eye on your moles, especially those which may have appeared recently.
Remember the mnemonic: ABCDE
Asymmetry
Borders (irregular)
Color (variegated), and
Diameter (greater than 6 mm (0.24 in), about the size of a pencil eraser)
Evolving over time
calvintheninjaman 1 month ago 13
SPF>30 is now prohibited in europe, because no sunscreen gives you total protection.
You also didn't tell anything about the most interesting photochemical reaction in our skin which is synthesis of vitamin D, I think by degradation of some precursor molecule.
xja85mac 1 month ago 9