反射光柵幻彩轉盆
每套幻彩轉盤共有兩塊激光效果似的反射光柵"Grating" ，此轉盤的底部有一點突出位置，故此轉盤可在檯面隨意地轉動很久。在燈光下面觀看轉動的轉盤，會看出很多不同的立體彩色極之美麗的圖案。當觀察者移動觀察的角度更會出現另一組美麗的圖案，其吸引力令人目不轉睛。這種幻彩轉盤很適合解釋光學上的反射定律，折射定律，衍射定律等等。
Item no : JHL 656 each pair

WONDERFUL rotating grating
Each pack contains 2 permanent metal disc, it can rotate freely on smooth table. The disc's surface is covered a diffraction grating sheet with special beautiful figures and shapes. When it is rotating , you can see an wonderful 3D shinny , colorful & flashing image, the color will change if you change your observation angle. It is an useful teacher aid to teacher what is light diffraction, reflection and grating properties etc..
Item no : JHL 656 each pair

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