Psychology of Beauty and Ugly

When something or someone i viewed; and their brainwaves produce pleasant effects, that person or object is determined to be beautifull; but, if the brainwaves respond in an unpleasant feeling, the object or person is determined to be ugly.
As an example, a beautiful dog is playing in a stream; then, goes on land and shakes the water of of him/her. The situation is determined to be beautifull due to the pleasant experience that is effectuated.
A family is sitting at a table at home eating dinner. It is a pleasant view; and, very beautifull.
If you combine the two, it becomes very ugly. The family is eating dinner at a table. That is beautifull. The dog shakes off the water from his/her body. That is beautifull; but, if the dog shakes off the water from its body on the table the family is eating at, it becomes very ugly.
The beliefs, philosophies; and knowledges determine if the brainwaves will be affected in  pleasant manner or a nonpleasant manner.
It does not matter if a person or thing is beautifull. Beauty; or the lack of it, s determined by brainwave responses.