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Презентация на тему Golden ratio

What is Golden Ratio? The Golden Ratio is a unique number, approximately 1.618033989. It is also known as the Divine Ratio, the Golden Mean, the Golden Number, and the Golden Section.
Golden ratio What is Golden Ratio?	The Golden Ratio is a unique number, approximately 1.618033989. AC is to CB as AB is to AC What is the Fibonacci Sequence of Numbers? 	The Fibonacci numbers are a Relationship between the Fibonacci Sequence and the Golden Ratio 	The Fibonacci Sequence As we can see, the ratio approaches the Golden Ratio. Even though Algebraic properties of the Golden Proportion1)2)3) Constructing a Golden Rectangle 	Given: a square ABCDFind midpoint on Golden triangle	The golden triangle is an isosceles triangleThe golden triangle is an Golden pentagram and decagon Plants growth	The branching rates in plants occur in the Fibonacci pattern, where Flowers	On the back of the passiflora incarnate, the 3 sepals (the part Petal counts 	The petals of the different flowers also contain the Fibonacci Numbers. The Golden Ratio in Humans	Dr. Stephen Marquardt is a former plastic surgeon, The Human Smile	A perfect smile: the front two teeth form a golden The Golden Ratio in Arts	The Golden Ratio has a great impact on Mona Lisa	Mona Lisa's face is a perfect golden rectangle, according to the The last supper	The masterpiece Statue of Athena	In the Statue of Athena, the first Golden Ratio is The Golden Ratio in Architecture	The Golden Ratio has appeared in ancient architecture. The Great Pyramid at Giza 	Half of the base, the slant height, The Parthenon 	The exterior dimensions of the Parthenon form a Golden Ratio The UN Building 	In the United Nations building, the width of the Conclusion	From the ancient times people were looking for harmony and perfection. Ancient
Слайды презентации

Слайд 2 What is Golden Ratio?
The Golden Ratio is a

What is Golden Ratio?	The Golden Ratio is a unique number, approximately

unique number, approximately 1.618033989. It is also known as

the Divine Ratio, the Golden Mean, the Golden Number, and the Golden Section.

Слайд 3 AC is to CB as AB is to

AC is to CB as AB is to AC

Слайд 4 What is the Fibonacci Sequence of Numbers?
The Fibonacci

What is the Fibonacci Sequence of Numbers? 	The Fibonacci numbers are

numbers are a unique sequence of integers, starting with

1, where each element is the sum of the two previous numbers. For example: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, etc.

Слайд 5 Relationship between the Fibonacci Sequence and the Golden

Relationship between the Fibonacci Sequence and the Golden Ratio 	The Fibonacci

Ratio
The Fibonacci Sequence is an infinite sequence, which means

it goes on for ever, and as it develops, the ratio of the consecutive terms converges (becomes closer) to the Golden Ratio, ~1.618. For example, to find the ratio of any two successive numbers, take the latter number and divide by the former. So, we will have: 1/1=1, 2/1=2, 3/2=1.5, 5/3=1.66, 8/5=1.6, 13/8=1.625, 21/13=1.615.

Слайд 6 As we can see, the ratio approaches the

As we can see, the ratio approaches the Golden Ratio. Even

Golden Ratio. Even though we know it approaches this

one particular constant, we can see from the graph that it will never reach this exact value.


Слайд 7 Algebraic properties of the Golden Proportion
1)
2)
3)

Algebraic properties of the Golden Proportion1)2)3)

Слайд 8 Constructing a Golden Rectangle
Given: a square ABCD
Find midpoint

Constructing a Golden Rectangle 	Given: a square ABCDFind midpoint on

on DC
Connect MB
Draw a circle with the center of

M, radius of MB
Expand the DC until it meets with the circle. The intersection is one vertex of the rectangle
Complete the rectangle

Слайд 9 Golden triangle
The golden triangle is an isosceles triangleThe

Golden triangle	The golden triangle is an isosceles triangleThe golden triangle is

golden triangle is an isosceles triangle such that the

ratio of the hypotenuse a to base b is equal to the golden ratio. From the above figure, this means that the triangle has vertex angle equal to

Слайд 10 Golden pentagram and decagon

Golden pentagram and decagon

Слайд 11 Plants growth
The branching rates in plants occur in

Plants growth	The branching rates in plants occur in the Fibonacci pattern,

the Fibonacci pattern, where the first level has one

"branching" (the trunk), the second has two branches, than 3, 5, 8, 13 and so on. Also, the spacing of leaves around each branch or stalk spirals with respect to the Golden Ratio.

Слайд 12 Flowers
On the back of the passiflora incarnate, the

Flowers	On the back of the passiflora incarnate, the 3 sepals (the

3 sepals (the part of the flower that is

not the petal) that protected the bud are outermost, followed by the 5 outer green petals and an inner layer of 5 more paler green petals.


 



Слайд 13 Petal counts

 

The petals of the different flowers also

Petal counts 	The petals of the different flowers also contain the Fibonacci

contain the Fibonacci Numbers. The examples are that the

buttercup has 5 petals, delphiniums has 8 petals, ragwort has 13 petals, aster as 21 petals, plantain has 34 petals, and asteraceae family has 55 petals, and some of them have 89 petals.

Слайд 14 The Golden Ratio in Humans
Dr. Stephen Marquardt is

The Golden Ratio in Humans	Dr. Stephen Marquardt is a former plastic

a former plastic surgeon, has used the golden section

and some of its relatives to make a mask that he claims that is the most beautiful shape a human face can ever have, it used decagons and pentagons as its function that embodies phi in all their dimensions.

Слайд 15 The Human Smile
A perfect smile: the front two

The Human Smile	A perfect smile: the front two teeth form a

teeth form a golden rectangle. There is also a

Golden Ratio in the height to width of the center two teeth. And the ratio of the width of the two center teeth to those next to them is phi. And, the ratio of the width of the smile to the third tooth from the center is also phi.

Слайд 16 The Golden Ratio in Arts
The Golden Ratio has

The Golden Ratio in Arts	The Golden Ratio has a great impact

a great impact on art, influencing artists' perspectives of

a pleasant art piece. Da Vinci, a sculpture, a painter, an inventor and a mathematician, was the first one who first called Phi the Golden Ratio.

Слайд 17 Mona Lisa
Mona Lisa's face is a perfect golden

Mona Lisa	Mona Lisa's face is a perfect golden rectangle, according to

rectangle, according to the ratio of the width of

her forehead compared to the length from the top of her head to her chin.

Слайд 18 The last supper
The masterpiece "Last Supper," contains a

The last supper	The masterpiece

golden ratio in several places, appearing in both the

ceiling and the position where the people sit.

Слайд 19 Statue of Athena
In the Statue of Athena, the

Statue of Athena	In the Statue of Athena, the first Golden Ratio

first Golden Ratio is the length from the front

head to the ear opening compared with the length from the forehead to the chin. The second one appears in the ratio of the length from the nostril to the earlobe compare with the length from the nostril to the chin.

Слайд 20 The Golden Ratio in Architecture
The Golden Ratio has

The Golden Ratio in Architecture	The Golden Ratio has appeared in ancient

appeared in ancient architecture. Not only did the ancient

Egyptians and Greeks know about the magic of Golden Ratio, so did the Renaissance artists, who used the Golden Ratio in the design of Notre Dame in between the 12th and 14th centuries.

Слайд 21 The Great Pyramid at Giza
Half of the base,

The Great Pyramid at Giza 	Half of the base, the slant

the slant height, and the height from the vertex

to the center create a right triangle.

Слайд 22 The Parthenon
The exterior dimensions of the Parthenon form

The Parthenon 	The exterior dimensions of the Parthenon form a Golden

a Golden Ratio in many of the proportions.


Слайд 23 The UN Building
In the United Nations building, the

The UN Building 	In the United Nations building, the width of

width of the building compared with the height of

every ten floors is a Golden Ratio.

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