de oplossing (inderdaad, effe gegoogled):http://wwwofe.er.doe.gov/Sub/News/News_Releases/DOE-SC/2005/Year_of_Physics/images/time.gif
de oplossing (inderdaad, effe gegoogled):
BeantwoordenVerwijderenhttp://wwwofe.er.doe.gov/Sub/News/News_Releases/DOE-SC/2005/Year_of_Physics/images/time.gif