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What is the aesthetic significance?
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How to calculate?
What is the aesthetic significance?
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The known line segments are two parts, so that one of them is the medium item of the proportion of the entire segment to the other. This is the golden segmentation problem mentioned in the geometric textbooks of middle school. If C is the point of the metric conditions of the line AB, the AC can be obtained for about 0.618AB. This division is called golden segmentation in the textbook. Sometimes we can also be said to divide the line segment into medium -end, Chinese and foreign ratios, or ratio. If G is used to indicate it, G is called a golden ratio or gold division.
The golden segmentation of human aesthetics
The human aesthetic observation is affected by the factors of race, society, and individuals. Only the overall harmony and proportion coordination can be called a complete beauty. The issues of this discussion are mainly the laws of aesthetic observation.
(1) The golden segmentation law is discovered by the ancient Greek mathematician Pydagoras, the sixth century BC, and later the ancient Greek aestheticist Plato called this golden division. This is actually a proportional relationship of a number, that is, divide a line into two parts. At this time, the ratio of long segments to short segments is exactly equal to the ratio of the entire line to the long paragraph. That is to say, the square of the long segment is equal to the product of the full length and the short section. 0.618, with strict proportion, artistic, harmoniousness, contains rich aesthetic value. Why do people instinctively feel beautiful about this proportion? In fact, this is closely related to the evolution of human beings and the normal development of the human body. According to research, in the process of evolution from apes to human, the bones have the largest change in skull and leg bone, and the body shape changes the least due to approximate gold. There are many proportional relationships in the human body structure close to 0.618, which makes the human body beauty hundreds of thousands of thousands The historical accumulation of the year is fixed. Human beings are most familiar with themselves, and the beauty of human body is bound to be the highest aesthetic standard. It is widely pushed by things and people, people and things. Any objects similar to the human body like it and feel beautiful. So the golden segmentation law, as an important form of aesthetic law, has become a classic law of aesthetic aesthetic, so far! In recent years, when studying the relationship between the golden segmentation and the human body, it was found that there were 14 "golden dots" in the human structure (the ratio of the short section and the long section of the object is 0.618), and the 12 "golden rectangles" (the ratio of width and long length was 0.618 The rectangular) and two "gold index" (the proportion relationship between the two objects is 0.618). Golden point: (1) Navel: top of the head -the division point of the soles; (2) the throat: the split point of the head -the belly button; (3), (4) the knee joint: (6) Elbow joint: Shoulder joint -the segmentation point of the middle fingertips; (7), (8) nipples: the segmentation point on the vertical axis of the trunk nipple; The division point with the middle and lower 2/3; (10) the lower point of the nose: the segmentation point of 1/3 of the bottom spacing of the bottom of the bottom; The segmentation point of the upper 1/3 and the middle and lower 2/3; (12) the main road point of the lip groove: the bottom of the nose -1/3 and the 2/3 of the upper middle and the 2/3; (13) left mouth angle point: The segmentation point of 1/3 of the left and 2/3 of the right and right of the mouth line; (14) Right corner point: 1/3 of the right and left 2/3 of the split point of the oral cracks. Facal golden segmentation law Facial three courts and five -eye golden rectangular: (1) Sports contour: the average of shoulder width and hip width is wide, the height of the shoulder peak to the bottom of the hip is long; For width, the distance from the hairline to the bottom is long; (3) the contour of the nose: the nose is wide, the distance from the nose to the bottom of the nose is long; Long distance; (5), (6) hand contour: the horizontal diameter of the hand is wide, and the average number is long when the five fingers are together; (7), (8), (9), (10), (11), (11) (12) The outline of the maxillary tooth, the side -cut teeth, and the tip of the teeth (three left and right): the maximum near and long diameter is wide, and the gum diameter is long.
Gold index: (1) The nasal lip index reflecting the nasal and mouth relationship: the ratio of the width of the nose to the angle of the mouth is similar to the golden numbers; The ratio of the pitch outside the eyes is similar to the golden numbers. 0.618, as one of the standard standards of a body bodybuilding, is unique, but it cannot ignore its "blur characteristics". Like other aesthetic parameters, it has an amplitude of allowable changes. Constraine.
(2) The proportional relationship is to use numbers to represent the beauty of the human body, and compare it according to a certain benchmark. The method of determining the proportional relationship with the human body with a certain part of the same human body is called the same method (see the middle picture). Divided into three groups: coefficient method, often fingers high body length index, such as painting the human body to sit five or seven, that is, the height is five times the head height, 7 or 7.5 times when the position is standing; It is regarded as 100%, and the proportion of each part of the body is in it; two points: that is, the human body is divided into two parts, the large part from the foot to the umbilicus, and the small part is the umbilicus to the top of the head. The standard surface type, the length and width ratio coordination, is in line with three stops (see the right picture). The three stop refers to the length of the face shape. The distance from the head of the head to the bottom is divided into three -class points, that is, from the hairline to the eyebrows, the eyebrow to the nose, the nose to the bottom, each of which is divided into one class. There are three stops in total; five eyes refer to the width of the face shape. The length of the front projection of the front of the ears is the length of the five eye cracks. In addition to the fracture of the eye, the spacing of this spar is one -eye, and the ears on both sides to the ears are each with their own ears. At a glance,
1. K: Refers to the purity of gold.
2, purity: refers to the brightness of the color. From a scientific perspective, the brightness of a color depends on the single level of the light transmission of light. Human eyes can distinguish the color of monochrome characteristics, all of which have a certain degree of brightness. Different hue is not only different, but also different purity. For example, the red in the pigment is the most purified hue. The color of orange, yellow, and purple is also high in the pigment. Blue and green are the lowest purity in the pigment. In the daily visual range, most of the colors seen in the eyes are gray color, that is, unsaturated colors. With the change of purity, it makes the world so rich in color. Even if the same color changes have undergone subtle changes in purity, it will bring changes in color character. Each (English Carat, German Karat's abbreviation, often writing "K") gold content is 4.166%, 18K = 18*4.166%= 74.998%, 24K = 24*4.166%= 99.984$K gold 99%, 22K content 91.7%, 18K contains 75.1%, 14K contains 58.5%, and 12K contains 50%.
3. Content
The gold jewelry currently sold in the market is divided into foot gold and K gold jewelry, according to the provisions of national standard GB11887.
The common gold jewelry content is:
24K -currently the market occasionally marked with 24K gold jewelry. According to national standards, the theoretical value of 24K gold content should be 100 %, and it should be 100 %. Jin Wuchi, so strictly speaking, 24K does not exist, and the sales of 24K gold in sales are incorrect and do not meet national standards.
Thousands of gold -content is 99.9%, commonly known as three 9.
The foot gold -content is 99.0%, above, commonly known as two 9.
18K —— The content is 75.0%. There are many colors of K gold, usually with yellow, red, and white. Among them, white K gold is actually alloy of gold, nickel, zinc, copper and other elements. It is not usually called platinum jewelry. Platinum refers to precious metal platinum (PT)
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5^/2-1/2 or the root number of the two or two minus one: approximately 0.618
Gold ratio, also known as the golden law, refers to a certain relationship between the part of the part of the matter, which is about to divide the two, and the larger part of the larger part is equal to the overall part to the larger part. The ratio is about 1: 0.618, that is, 0.618. 0.618. 0.618 is recognized as the most aesthetic proportional figure. The above ratio is the proportion of the most beautiful beauty, so it is called the golden segmentation. Application in life is magical.