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Image caption: Electricity. Van Der Graff's generator.
Image caption: Fossil.
Image caption: Astrophysicist Observatory, Roque de Los Muchachos, La Palma Island (Canary Island).
Image caption: Models of molecules.
Image caption: Models of molecules.
Image caption: Plane tree leaf.
Image caption: Model of molecules.
Image caption: Container with measures for the mixture and chemical product elaboration.
Image caption: Graphical detail of an electrocardiogram.
Image caption: Cathode rays, magnet effect. Physics lesson.
Image caption: School chemistry. Experiment about air composition.
Image caption: School chemistry. Calcium carbonate descomposition.
Image caption: School chemistry. Calcium carbonate descomposition.
Image caption: Electroscope. Physics and electricity.
Image caption: Manometer with syringe. Physics.




       
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