1) The document proposes an "arithmetic of color" to describe how colors mix both additively (with light) and subtractively (with pigments).
2) Additively, the visible light spectrum is divided into thirds (red, green, blue), which are treated as primary colors. Mixing two results in a new color - red+green=yellow, etc. Subtractively, pigments absorb parts of the spectrum, so cyan+magenta=blue.
3) Simple arithmetic rules are given to predict the results of mixing colors either additively or subtractively. The rules allow determining complementary colors that combine to make white light.
A New Double Numerical Integration Formula Based On The First Order DerivativeIRJESJOURNAL
ABSTRACT: A new double numerical integration formula based on the value of integrated function and first order derivative of the integrable function was proposed. Different from the traditional mechanical quadrature formula, contibuted integral function and first order derivative of the integral function. Four nodes are selected appropriately in the integral interval. Used the value of function and first order derivative, constructed a new numerical integration formula that achieve seven order algebraic precision. Then analysed the algebraic precision、 remainder、stypticity and stability of the formula. Then generalized the formula into double integral. In the end, according to the two typical examples vertified the formula’s validity and fesibility. This formula enrich the content of numerical calculation. Provided a new method for solving double numerical integrations.
Discrete Mathematics and Its Applications 7th Edition Rose Solutions ManualTallulahTallulah
Full download : http://alibabadownload.com/product/discrete-mathematics-and-its-applications-7th-edition-rose-solutions-manual/ Discrete Mathematics and Its Applications 7th Edition Rose Solutions Manual
A New Double Numerical Integration Formula Based On The First Order DerivativeIRJESJOURNAL
ABSTRACT: A new double numerical integration formula based on the value of integrated function and first order derivative of the integrable function was proposed. Different from the traditional mechanical quadrature formula, contibuted integral function and first order derivative of the integral function. Four nodes are selected appropriately in the integral interval. Used the value of function and first order derivative, constructed a new numerical integration formula that achieve seven order algebraic precision. Then analysed the algebraic precision、 remainder、stypticity and stability of the formula. Then generalized the formula into double integral. In the end, according to the two typical examples vertified the formula’s validity and fesibility. This formula enrich the content of numerical calculation. Provided a new method for solving double numerical integrations.
Discrete Mathematics and Its Applications 7th Edition Rose Solutions ManualTallulahTallulah
Full download : http://alibabadownload.com/product/discrete-mathematics-and-its-applications-7th-edition-rose-solutions-manual/ Discrete Mathematics and Its Applications 7th Edition Rose Solutions Manual
Bugüne kadar 25 farklı ülkeden 100 fark yaratan genci buluşturan ve Ashoka’nın
Türkiye ofisinde hayata geçen ChangemakerXchange’in geçen yaz Almanya’da
gerçekleşen buluşmasını Türkiye’de seçilen Genç Optimist Eda Bayraktar anlatıyor
Yolculuk paylaşım platformu Yolyola’nın kurucularından Barış Akbaş bu paylaşımın çevreye ve topluma
getirdiği faydaları anlatıyor.
https://www.yolyola.com
Geleceğin tıp metodu olarak değerlendirilen biorezonans yönteminin
Türkiye’de duyulmasını sağlayan Dr. Sinan Akkurt ile bu yöntemi ve
iş dünyasında performans artırıcı bir program olan
Peak Performans eğitimini konuştuk.
2012 yılında Türk Patent Enstitüsü Bilim Konseyi tarafından son 7000 buluş arasında öne çıkan ilk 10 yerli fikir ve buluştan biri seçilen, güneş enerjisinden elektrik üreten güneş şemsiyesi SolBrella’yı mucidi
Gökhan Kalaylı Optimist’e anlattı.
Sosyal girişimcilikle ilgili üç ana sorun var:
Sosyal girişimin net olarak tanımlanmaması, sivil toplum kuruluşlarıyla karıştırılması,
etik ve para boyutu. Geleceğini Ayarlama Enstitüsü (GAYE) kurucusu ve Genç Optimistler
Kurulu üyesi Eda Bayraktar, Genç Sosyal Girişimciler Derneği Başkanı Erhan Bozkurt
ve Good4Trust.org kurucusu, Change.org Doğu Avrupa ve Batı Asya Direktörü
Dr. Uygar Özesmi zumbara.com üzerinden bir araya gelip
bu sorunları konuştular ve yanıtlarını vermeye çalıştılar.
This presentaiton is on international and alternative social media marketing. It gives examples of international social media platforms by examining both Japanese and Chinese social media including Mexi and RenRen. Since social media giants including Facebook cannot effectively compete in such markets due to government regulations and existing competition.
WATCH THE VIDEO VERSION!
http://www.youtube.com/watch?v=18LYC-bQfeY&feature=relmfu
dailyreckoning.com
Is the US Dollar headed toward complete failure? Learn what led to every fiat currency in history to fail and how the US dollar could be next.
Follow Us On Facebook:
http://www.facebook.com/TheDailyReckoning
Follow Us On Twitter:
https://twitter.com/DailyReckoning
Presentation By daroko blog-where IT learners apply Skills in real business environment.
-------------------------------------------------------------------------------------
This presentation will introduce you to color representation in computer graphics.
-----------------------------------------------------------------
Do Not just learn computer graphics an close your computer tab and go away..
APPLY them in real business,
Visit Daroko blog for real IT skills applications,androind, Computer graphics,Networking,Programming,IT jobs Types, IT news and applications,blogging,Builing a website, IT companies and how you can form yours, Technology news and very many More IT related subject.
-simply google:Daroko blog(professionalbloggertricks.com)
-------------------------------------------------------------------
• Daroko blog (www.professionalbloggertricks.com)
• Presentation by Daroko blog, to see More tutorials more than this one here, Daroko blog has all tutorials related with IT course, simply visit the site by simply Entering the phrase Daroko blog (www.professionalbloggertricks.com) to search engines such as Google or yahoo!, learn some Blogging, affiliate marketing ,and ways of making Money with the computer graphic Applications(it is useless to learn all these tutorials when you can apply them as a student you know),also learn where you can apply all IT skills in a real Business Environment after learning Graphics another computer realate courses.ly
• Be practically real, not just academic reader
Color fundamentals and color models - Digital Image ProcessingAmna
This presentation is based on Color fundamentals and Color models.
~ Introduction to Colors
~ Color in Image Processing
~ Color Fundamentals
~ Color Models
~ RGB Model
~ CMY Model
~ CMYK Model
~ HSI Model
~ HSI and RGB
~ RGB To HSI
~ HSI To RGB
Here I presented my presentation slide about color image processing.
In color image processing, an abstract mathematical model known as color space is used to characterize the colors in terms of intensity values. This color space uses a three-dimensional coordinate system. For different types of applications, a number of different color spaces exists. The saturation is determined by the excitation purity, and depends on the amount of white light mixed with the hue. A pure hue is fully saturated, i.e. no white light mixed in. Hue and saturation together determine the chromaticity for a given colour. Finally, the intensity is determined by the actual amount of light, with more light corresponding to more intense colours[1].
Achromatic light has no colour - its only attribute is quantity or intensity. Greylevel is a measure of intensity. The intensity is determined by the energy, and is therefore a physical quantity. On the other hand, brightness or luminance is determined by the perception of the colour, and is therefore psychological. Given equally intense blue and green, the blue is perceived as much darker than the green. Note also that our perception of intensity is nonlinear, with changes of normalised intensity from 0.1 to 0.11 and from 0.5 to 0.55 being perceived as equal changes in brightness[2].
Colour depends primarily on the reflectance properties of an object. We see those rays that are reflected, while others are absorbed. However, we also must consider the colour of the light source, and the nature of human visual system. For example, an object that reflects both red and green will appear green when there is green but no red light illuminating it, and conversely it will appear red in the absence of green light. In pure white light, it will appear yellow (= red + green).
RETOOLING OF COLOR IMAGING IN THE QUATERNION ALGEBRAmathsjournal
A novel quaternion color representation tool is proposed to the images and videos efficiently. In this work,
we consider a full model for representation and processing color images in the quaternion algebra. Color
images are presented in the threefold complex plane where each color component is described by a
complex image. Our preliminary experimental results show significant performance improvements of the
proposed approach over other well-known color image processing techniques. Moreover, we have shown
how a particular image enhancement of the framework leads to excellent color enhancement (better than
other algorithms tested). In the framework of the proposed model, many other color processing algorithms,
including filtration and restoration, can be expressed.
RETOOLING OF COLOR IMAGING IN THE QUATERNION ALGEBRAmathsjournal
A novel quaternion color representation tool is proposed to the images and videos efficiently. In this work,
we consider a full model for representation and processing color images in the quaternion algebra. Color
images are presented in the threefold complex plane where each color component is described by a
complex image. Our preliminary experimental results show significant performance improvements of the
proposed approach over other well-known color image processing techniques. Moreover, we have shown
how a particular image enhancement of the framework leads to excellent color enhancement (better than
other algorithms tested). In the framework of the proposed model, many other color processing algorithms,
including filtration and restoration, can be expressed.
RETOOLING OF COLOR IMAGING IN THE QUATERNION ALGEBRAmathsjournal
A novel quaternion color representation tool is proposed to the images and videos efficiently. In this work, we consider a full model for representation and processing color images in the quaternion algebra. Color images are presented in the threefold complex plane where each color component is described by a complex image. Our preliminary experimental results show significant performance improvements of the proposed approach over other well-known color image processing techniques. Moreover, we have shown how a particular image enhancement of the framework leads to excellent color enhancement (better than other algorithms tested). In the framework of the proposed model, many other color processing algorithms, including filtration and restoration, can be expressed.
Retooling of Color Imaging in ihe Quaternion Algebramathsjournal
A novel quaternion color representation tool is proposed to the images and videos efficiently. In this work, we consider a full model for representation and processing color images in the quaternion algebra. Color images are presented in the threefold complex plane where each color component is described by a complex image. Our preliminary experimental results show significant performance improvements of the proposed approach over other well-known color image processing techniques. Moreover, we have shown how a particular image enhancement of the framework leads to excellent color enhancement (better than other algorithms tested). In the framework of the proposed model, many other color processing algorithms, including filtration and restoration, can be expressed.
RETOOLING OF COLOR IMAGING IN THE QUATERNION ALGEBRAmathsjournal
A novel quaternion color representation tool is proposed to the images and videos efficiently. In this work,
we consider a full model for representation and processing color images in the quaternion algebra. Color
images are presented in the threefold complex plane where each color component is described by a
complex image. Our preliminary experimental results show significant performance improvements of the
proposed approach over other well-known color image processing techniques. Moreover, we have shown
how a particular image enhancement of the framework leads to excellent color enhancement (better than
other algorithms tested). In the framework of the proposed model, many other color processing algorithms,
including filtration and restoration, can be expressed.
Similar to Understanding the arithmetic of color (20)
Light's Orbital Angular momentum Momentum polariton
The angular momentum of light is a vector quantity that expresses the amount of dynamical rotation present in the electromagnetic field of the light. Indeed, a beam of light, while traveling approximately in a straight line, can also be rotating (or “spinning”, or “twisting”) around its own axis. This paper is an excellent and pedagogical review.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Chapter 3 - Islamic Banking Products and Services.pptx
Understanding the arithmetic of color
1. EDUCATION Revista Mexicana de F´ısica 61 (2015) 28–30 JANUARY–JUNE 2015
Understanding the arithmetic of color
J. Medina M´arqueza,∗
, S.E. Balderas-Matab
, and C. Z´u˜niga Islasa
a
Instituto Nacional de Astrof´ısica, ´Optica y Electr´onica,
Luis Enrique Erro No. 1 Sta. Ma. Tonantzintla, Puebla, 72840 Pue. M´exico.
e-mail: jmedina@inaoep.mx; czuniga@inaoep.mx
b
Universidad de Guadalajara, CUCEI, Departamento de Electr´onica,
Blvd. Marcelino Garc´ıa Barrag´an # 1421, Guadalajara, Jalisco, M´exico, 44430,
e-mail: sandra.balderas@cucei.udg.mx
Received 13 January 2015; accepted 26 January 2015
In this work we propose to introduce Arithmetic for the Mixture of Colors, which can be defined from dividing the electromagnetic spectrum
of white light in three thirds, and by associating each of them to an algebraic expression of the three primary additive and subtractive colors.
Then, we will give the rules for adding or subtracting to predict the new mixture of resultant colors.
Keywords: Mixture of colors; chromatic arithmetic.
PACS: 01.40.E, 01.40.eg, 01.40ek
1. Introduction
If we ask randomly to any person on the street how much is
three plus two, probably, we will get the answer without any
problem. If, instead of asking them to sum these two num-
bers, we ask them to subtract them, practically any person
would answer that the result is one. But, if now the questions
are: which color do we obtain when we superpose a red light
with a blue one? Or, which color results by mixing cyan paint
with yellow one? Then the answer is no longer easy, and it
will be hard to find someone to give a proper answer. Maybe,
the first obstacle in giving an answer to these questions is that
just a few people can identify a cyan pigment, or to name a
color magenta (it is most common to call it Mexican pink).
In order to explain how light and pigments can be com-
bined to obtain different colors, the summation of color as
light (additive mixture) and the superposition of coloring ma-
terials (subtractive mixture) are used [1,2].
Therefore, in this work the following considerations will
be assumed:
• White light is formed by the whole visible spectrum,
i.e., the one that contains all the rainbow bands.
• This white light or visible spectrum will be divided
in three thirds, see Fig. 1. The first one corresponds
to the short wavelengths (blue), the second one to the
medium wavelengths (green), and the third one to the
long wavelengths (red), in the same way as in a com-
puter projector or a TV.
• Each of these bands is defined as an Additive Primary.
In our proposal, we will represent it as a light source
that emits in blue (B), another one that emits in green
(G), and another one that emits in red (R).
• An additive mixture means to project at the same time
and on the same place two or more light sources, so
there is an overlap of these emitted lights. The repre-
sentation of this mixture will be represented with the
plus sign (+).
• In this sense, the additive mixture of the three thirds of
the rainbow forms again the original white light, which
we will represent algebraically as:
B+G+R = white light (1)
• When, instead of using a light source as a primary
color, we use a material to obtain pigmentation, we re-
ferred to this material as subtractive primary.
• A subtractive primary is a material designed to absorb
one third of the white light spectrum. For this reason
there are three subtractive primaries: one which ab-
sorbs the red band, one which absorbs the green band,
and one which absorbs the blue band of the spectrum.
The minus sign (-) indicates the absorption character-
istic of each to these primary colors.
• To make a subtractive mixture, we need to mix two or
more pigments. The representation of this mixture is
through a sum, in which each term of the sum is a sub-
tractive primary color.
• When in a subtractive mixture we obtain a result of 2B,
it will be substituted by B (which means 2B≈B), and
the same will happen with 2R by R, and 2G by G; be-
cause the number 2 only indicates that we obtained two
times blue (or red or green), and it is perceived as the
same color.
2. Arithmetic of the additive mixture
Now we will use the thirds of Fig. 1 as blue light, green light,
and red light in order to obtain new colors [3].
2. UNDERSTANDING THE ARITHMETIC OF COLOR 29
FIGURE 1. The three thirds, R, G, B of the white light spectrum.
If we superpose blue with green light, the obtained mix-
ture will be defined as cyan (C) light. Then, the cyan light
will be algebraically represented as follows:
C= B+G. (2)
Notice that the red band of the visible spectrum is missing
from the cyan light for it to be white light.
Now, if the superposed lights are blue and red, the new
obtained color is called magenta (M), and it is algebraically
represented as:
M = B + R . (3)
Now the missing band of the visible spectrum for the ma-
genta light to obtain white light is the green one.
By mixing green and red light we obtain yellow (Y) light,
which can be represented by:
Y= G+R . (4)
Another way to visualize it is that we observe a yellow
color due to the fact that we are missing the blue rainbow
band.
Figure 2 shows the experimental results of the three bi-
nary mixtures with the three primary colors R, G, B, to ob-
tain cyan, magenta, and yellow, as was previously discussed
in Eqs. 2-4.
Now, what should we obtain if, instead of using red,
green, and blue lights, we use projectors that give us cyan,
magenta, and yellow lights? Let’s solve these cases:
What should we obtain from the mixture of yellow and
magenta lights? Let’s write the proposed algebraically ex-
pression for the additive mixture:
Y + M = ¿?
FIGURE 2. Experimental results of the binary mixtures from the
Primary Additives: Red, Green, and Blue to obtain a) Cyan, b)
Magenta, and c) Yellow.
FIGURE 3. a) Yellow and Magenta; b) to d) Experimental results
of mixing complementary colors to obtain white light.
Now, by substituting the values of Y and M from Eqs. (2)
and (4), the mixture is as:
(G + R) + (B + R) = G + R + B + R
= (B + G + R) + R
= white light + R
= white light with reddish tendency.
The experimental results are shown in Fig. 3(a), where
we have two ansatz: each of the superposed primaries has the
same energy, and it is irrelevant in which order we sum them.
That is (G + R + B) = (B + R + G).
An important contribution of these kinds of sums is that
we can make a simple arithmetic to predict complementary
colors, for which the following definition will be used: if ad-
ditive sum of two sources light produces white light, then
these source lights will be called complementary. The com-
plementary source can be found by using the algebraic ex-
pressions derived before for the cyan, magenta, and yellow
mixtures.
Cyan has been defined as the primary that does not have
red in its spectrum, so, by superposing red to cyan, i.e., its
complementary, we obtain:
C + R = (B + G) + R = B + G + R = white light! .
Figure 3(b) shows the experimental result of this mixing.
In the same way we can illustrate that green is the com-
plementary color of magenta:
M + G = (B + R) + G
= B + R + G
= B + G + R
= white light!
The experimental result is shown in Fig. 3 (c).
And, that the complementary of yellow is blue, obtaining:
Y + B = (G + R) + B
= G + R + B
= B + G + R
= white light!
The experimental result is shown in Fig. 3(d).
In the following section, we show the proposed arithmetic
for the color pigment mixing known as subtractive mixture.
Rev. Mex. Fis. 61 (2015) 28–30
3. 30 J. MEDINA M ´ARQUEZ, S.E. BALDERAS-MATA, AND C. Z ´U ˜NIGA ISLAS
FIGURE 4. Subtractive mixtures: a) Cyan + Magenta = Blue, b)
Cyan + Yellow = Green, c) Magenta + Yellow = Red, and d) Ma-
genta + Cyan + Yellow = Black.
3. Arithmetic of a subtractive mixture
In this section we will mix pigments that are used to the
coloration process. The primary colors that are proposed
are called Subtractive Primary: cyan (Cpigment), magenta
(Mpigment), and yellow (Ypigment). Based on our initial con-
siderations we have the following algebraic representations
for them.
Cpigment = B + G - R (5)
Mpigment = B + R - G (6)
Ypigment = G + R - B . (7)
Now, we can find the resultant color if we mix a cyan with
a magenta pigment (in the same proportion):
C + M = (B + G - R) + (B + R - G) = 2B . (8)
The sum gives us twice blue. This does not mean that
the obtained blue will be more saturated, but that we have
obtained twice the amount of material, which is observed as
just blue. Figure 4 (a) shows the experimental result of this
mixing.
When the cyan and the yellow pigments are mixed in
the same proportion, the new obtained pigment is known as
green:
C + Y = (B + G - R) + (G+ R - B) = 2G ≈ G. (9)
Indicating that the green part of the cyan and the yellow
pigments has been reflected, and the observed color is green.
Figure 4 (b) shows the resultant of the experiment.
By mixing the magenta and the yellow pigments in the
same proportion, we obtain the red pigment:
M + Y = (B + R - G) + (G+ R - B) = 2R R. (10)
This indicates that only the red part of the magenta and
the yellow pigments is reflected. Figure 4 (c) shows this mix-
ture of colors.
And, by mixing cyan, yellow, and magenta pigments in
the same proportion, we obtain:
C + M + Y = (B + G - R) + (B + R - G) + (G + R - B)
= (2B - B) + (2R - R) + (2G - G) (11)
But, as we mentioned above, 2R simply means that red
(R) is observed; so, by subtracting the same color (R - R), we
obtain zero. The same thing happens with each of the terms
in parenthesis in Eq. (11). That is:
C + M + Y = (B - B) + (R - R) + (G - G) = 0 (12)
Which means absence of reflected light, i.e., black. This
happens due to the fact that when the cyan and the magenta
pigments are mixed, the cyan absorbs the red part of the ma-
genta, leaving only the blue part. And, when the latter is
mixed with the yellow pigment, the yellow absorbs the blue
part of the spectrum, meaning that; each pigment absorbs a
third of the visible spectrum of Fig. 1, which results in the
absence of reflected light, see Fig. 4d).
4. Conclusions
We have shown a very simple and easy way to interact with
primary colors; as light sources and as pigments, and how
they behave in nature when are mixed. Also, we have shown
a simple arithmetic procedure to predict the new color by
adding or subtracting light sources or pigments. Finally,
chromatically, adding and subtracting is just to play with the
three thirds of the visible electromagnetic spectrum.
1. L.R. Daniel, El color y su medici´on, 1era. Edici´on (Am´erica
Lee, Buenos Aires, 1978).
2. Billmeyer and Saltzman’s, Principles of color Technology,
Third Edition (Roy S. Berns, John Wiley and Sons Inc., New
York, 2000).
3. H.M. Leo, Color Vision, (Sinauer Associates Inc. Publishers
Sunderland, Massachusetts, 1981).
Rev. Mex. Fis. 61 (2015) 28–30