Click here to access this blog in a mobile version.
03 January 2012
Protect yourself from photo-chemical changes
This is for the ISOCS Senior Primary students, who are inquiring into changing materials. Some of you might be in the hight mountains, and others on warm sunny beaches, but in either case, we do not want any material changes due to photo-chemistry.
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.