Why draw rangoli at the entrance of the house? Drawing rangoli at the entrance of the house is a very old tradition in India. It is a practice that is being followed even today. But still, many people may not be aware of the scientific reason for following it. Rangoli is generally drawn with circular, straight or curved lines. On seeing it, it appears as if waves of different frequencies are moving. These formations have the ability to influence the brain of the viewer. Rangolis with dots and lines drawn by the old timers are more scientific. When we draw