Selektive Fokussierung des Kindes durch das Mikroskop im Klassenzimmer - Stock-Footage & -Video

Selective focus of kid writing and looking through microscope near test tubes with liquid in classroom

Schoolboy looking at red liquid in flask and scratching head, having no idea

Little nerd comparing liquids in flasks and writing reaction results, innovation

Selective focus of kid writing in notebook and looking through microscope near test tubes with liquid in classroom

Boy in protective glasses mixing chemical liquids in flasks, curious genius

Schoolboy looking at sediment in flask and writing results, chemistry lesson

Selective focus of kid writing and looking through microscope near test tubes with liquid in classroom

Selective focus of kid writing in notebook and looking through microscope near test tubes with liquid in classroom

Pretty, attentive scientists making research with microscope in laboratory

Two serious scientists talking in laboratory near table with medical glassware

Attentive scientist looking at blue liquid in test tube and writing down results in laboratory

Selective focus of pretty scientist looking in microscope and talking to colleague in laboratory