16/4=4 9/4=2.25

In other words, 16:9 is equivalent to 4:2.25, which is of course wider than 4:3.

16:9 results in the golden section. 16: 9 is wider than 4: 3, and its left and right boundaries, upper and lower boundaries and the visual angle of human eyes are the closest to the golden section, so the LCD screen of 16: 9 is the most comfortable to use than the LCD screen of 4: 3, which can improve people's comfort and reduce fatigue to the greatest extent. Let's add the origin of the golden section and enjoy it!

Golden section is the best proportion of eyeball vision.

The ancient Greeks believed that beauty was the language of God. They found a mathematical evidence that the golden section was a measure of God. Euclid, a genius in geometry, went further: he found that the secret of natural beauty lies in clever and harmonious mathematical proportions, which are mostly close to 1 instead of 1.438+08.

As early as in ancient Greece and Rome, some painters and artists found that painting and other works of art would become more harmonious, beautiful and beautiful if a certain proportional relationship in mathematics was introduced into the art field. For example, people think that a rectangle is more beautiful than a square, but in a rectangle, the length-width ratio is about 5: 8, which will be more beautiful and beautiful. Because their proportions are harmonious, of course, the golden section, that is, 0.6 18, is the most beautiful proportional relationship. It is called the golden section because the things and things formed by this ratio are beautiful in feeling, perfect in function, optimized in resource allocation and efficient.

The shape of sunflower contains such a golden section principle. There is a left and right spiral on the sunflower disk, and each group of spiral conforms to the golden ratio. If there are 2 1 left turns, there are 13 right turns, a total of 34. 13 to 2 1 is exactly the golden ratio of 0.6 18. In addition, there are two kinds of small flowers with different shapes on the outer edge of sunflower disk, namely tubular flowers and tongue-shaped flowers. Their numbers are 55 and 89 respectively, and the ratio is exactly 0.6 18.

Why does sunflower have this golden section? This is designed for their function of absorbing sunlight. Only under this golden section distribution can sunflower make each leaf, branch and petal not overlap, absorb sunlight and nutrition to the maximum extent and carry out photosynthesis. Not only sunflowers, but also many plants and flowers. In fact, this optimized functional hunger is the most beautiful form of expression.

The earth environment in which we live can also illustrate the beauty of mathematics. The latitude of the earth's surface varies from 0 to 90 degrees. If divided into gold, 34.38 ~ 55.62 degrees is the golden zone of the earth. In this golden zone, the annual average temperature, sunshine time, precipitation and relative humidity are all suitable for human life and plant growth. Judging from the countries distributed in this region, many developed countries in the world are in this region. Excluding social, historical, institutional and other social and human factors, the natural golden section is one of the undeniable reasons.

The mathematical theorem of the golden section is inextricably linked with life, growth and development, health, disease, aging and death, and sometimes even the basic law of the internal form of life. Following the golden section is the magic weapon of health and the embodiment of the beauty of life.

Human beings meet the classification of 0.6 18, and people will get a sense of harmony and beauty. Feeling is a psychological process and behavior, which must be based on physiological function. Therefore, the balance of golden section is naturally related to health.