13619055 - Pith ball and charged comb13619058 - Pith ball and charged balloon13619057 - Pith ball and charged balloon13619060 - Pith balls13524095 - Rain droplets on a red car13619061 - Pith ball and charged balloon13619054 - Pith ball13619051 - Pith ball12650357 - Fat-hen plants13619053 - Pith ball13619052 - Pith ball and charged comb13619056 - Pith ball and charged comb12648804 - Magnetic Field of a Bar Magnet12492979 - Interaction between magnetic poles, illustration12492976 - Interaction between magnetic poles, illustration12492978 - Interaction between magnetic poles, illustration12639359 - Magnetic Field12492982 - Interaction between magnetic poles, illustration12492973 - Interaction between magnetic poles, illustration12492983 - Interaction between magnetic poles, illustration12492974 - Interaction between magnetic poles, illustration12492969 - Interaction between magnetic poles, illustration12492971 - Interaction between magnetic poles, illustration12639362 - Like Magnetic Poles Repel12650355 - Fat-hen plants12639363 - Opposite and Like Magnetic Poles Attract and Repel12492972 - Interaction between magnetic poles, illustration12492970 - Interaction between magnetic poles, illustration12492984 - Interaction between magnetic poles, illustration12492975 - Interaction between magnetic poles, illustration12492980 - Interaction between magnetic poles, illustration12492977 - Interaction between magnetic poles, illustration12492981 - Interaction between magnetic poles, illustration12629895 - Matching Magnetic Poles Repel11699082 - Pine tree pest control,USA12030245 - Electrostatic interaction (2 of 3)12030246 - Electrostatic interaction (3 of 3)11632705 - Magnetism experiment,188911632702 - Magnetism experiment,188912044067 - Magnetic Field Lines,illustration11825389 - Waterproof clothing11632700 - Magnetism experiment,188911519265 - Magnetic repulsion11632703 - Magnetism experiment,188911642766 - Insect repellents11552864 - DEET insect repellent molecule12016962 - Magnet Demonstration12018245 - Pith Ball12018246 - Pith Ball11537051 - Lady's mantle leaf (Alchemilla mollis)12018252 - Pith Balls11632701 - Magnetism experiment,188912030244 - Electrostatic interaction (1 of 3)11632704 - Magnetism experiment,188911899605 - Water repellent surface12018284 - Magnetic Interaction11552860 - DEET insect repellent molecule12018286 - Magnetic Interaction12018251 - Pith Balls12003024 - Pith Balls12017052 - Magnetic Repulsion12005502 - Pith Balls12018285 - Magnetic Interaction12008939 - Swallowtail Butterfly Caterpillar12005503 - Pith Balls12011272 - Sacred Lotus Leaf,SEM