Science versus imagination

His face was glimmering to hear his student's answer and he encouraged to proceed on, exploring the world of the imagination. I was an enthusiastic soul who strived for learning. He started explaining how rainbow gets its shape. "After raining when the air contains water- droplets, the Sunrays fall upon the surface of them and create rainbows. Each water -droplet forms of a number of prisms. When the Sunrays come, water-droplets act as prism and rays disperse into seven colours. When the Sunrays emit from droplets, it gets bent and disperse into seven colours. This is how rainbows become. Got it? "