Perception and reality are two different issues that cause contradiction to different individuals. Perception is what you see while reality is what it is. For example, in the case where a stick is placed in water, it may appear as if it bends. However, when one removes the same stick from the water, you notice that the stick has broken. The bending of the stick when placed in the water is brought about by the bending of light rays due to change in transmission media from the air to water. This is referred to as the refraction. This perception Continue reading...