two high school students in turkey have developed a device to disinfect banknotes using ultraviolet light. osman bugra bolat and berat doguhan basara... - 電磁的 個影片檔及 b 捲影像02:15紫外線燈
ms scientist looking at dna result under black light, boxmeer, netherlands - 電磁的 個影片檔及 b 捲影像00:06紫外線燈
animation neutrons, protons, and quarks in an oxygen nucleus following the reaction between two hydrogen atoms and an oxygen atom - 電磁的 個影片檔及 b 捲影像00:08
animation neutrons, protons, and quarks in an oxygen nucleus following the reaction between two hydrogen atoms and an oxygen atom - 電磁的 個影片檔及 b 捲影像00:08
animation neutrons, protons and the quarks in a water molecule with spinning shell structure and overlaid text and numbers - 電磁的 個影片檔及 b 捲影像00:07
animation neutrons, protons, and the quarks in a water molecule with spinning shell structure - 電磁的 個影片檔及 b 捲影像00:07粒子
cu zi plate of lettuce for salad, lighting suddenly changing to ultraviolet, walkerton, ontario, canada - 電磁的 個影片檔及 b 捲影像00:28