# In the toolbar there is two prisms avaiable,one for indicate refraction and another for spectrum. # Drag & Drop the prism to the experiment area to place the prism # Click on the Object to place the object in experimental area # You can add only one prism at one time # You can Drag the prism to get ray diagram # Double click on the prism to remove the prism from the experimental area. # Here, the arrow consider as laser light source Arrow