Final answer:
Tension in a one length haircut ensures evenness and uniformity, as it maintains the same length throughout without creating layers or a graduated effect. Static electricity observed in an experiment with a comb and paper demonstrates attraction due to charged particles. The law of good continuation relates to visual perception and how elements on a line or curve are seen as related.
Step-by-step explanation:
In the context of hairstyling, when cutting a one length haircut, tension is used to ensure evenness and uniformity throughout the haircut. This means that when hair is combed and held taut while cutting, the aim is to create a clean, even baseline with no layering or graduation. Tension helps to keep the hair in the same position and length during the cutting process. Unlike when creating layers or a graduated effect, where tension and elevation are used together to achieve the desired result, a one length haircut relies on minimal tension to maintain the same length from front to back.
In an experiment where a comb is run through the hair and brought close to small pieces of paper, the observation will likely be that the pieces of paper are attracted and adhere to the comb. This is due to static electricity, which is created by friction between the comb and hair, causing an accumulation of electric charges on the comb's surface.
Regarding the law of good continuation, in the context of visual perception, this law suggests that elements arranged on a line or curve are perceived to be more related than elements not on the line or curve, regardless of their distance from each other. This law applies to visual patterns and does not directly relate to the task of cutting hair.