# convenio de signos

## English translation: sign convention

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
 Spanish term or phrase: convenio de signos English translation: sign convention Entered by:

 10:45 Feb 25, 2006
Spanish to English translations [PRO]
Science - Physics / geometric optics
 Spanish term or phrase: convenio de signos Study programme for a university course on geometric optics: Dióptrico esferico: convenio de signos. Construcción de imágenes en el dióptrio: foco imagen y foco objeto. Aumento lateral y angular de un dióptrio. Espejos esfericos. any ideas please? xx
 Local time: 17:25
 sign convention Explanation:sign convention Se refiere al convenio para dar valor positivo o negativo a las cifras de los cálculos. http://lists.nau.edu/cgi-bin/wa?A2=ind0303&L=phys-l&F=&S=&P=... How many of you use the Cartesian sign convention for optics? I am used to the sign convention that has virtual images being negative and object distances being positive. http://cord.org/step_online/st1-3/st13eii3.htm C. Mirror formulas for image location (...) 2. Sign convention. The sign convention to be used in conjunction with Equation 3-6 and Figure 3-18 is as follows. Object and image distances p and q are both positive when located to the left of the vertex and both negative when located to the right. The radius of curvature r is positive when the center of curvature C is to the left of the vertex (concave mirror surface) and negative when C is to the right (convex mirror surface). Vertical dimensions are positive above the optical axis and negative below.--------------------------------------------------Note added at 16 mins (2006-02-25 11:01:45 GMT)--------------------------------------------------http://scienceworld.wolfram.com/physics/OpticsSignConvention... Optics Sign Conventions There are a number of different conventions used for keeping track of the orientations of images in optics. The "Cartesian" convention is used by Schroeder (1987). It is similar to that of Born and Wolf (1999) and Longhurst (1967). In this convention, distances to the left of the vertex are negative, and distances to the right are positive. Distances from the optical axis are positive if measured upwards. --------------------------------------------------Note added at 18 mins (2006-02-25 11:03:30 GMT)--------------------------------------------------http://panda.unm.edu/courses/finley/P262/OptSignConv2/OptSig... Sign Conventions Used for Mirrors, Refracting Surfaces, and Lenses
Selected response from:

Andrés Martínez
Spain
Local time: 17:25
 Thanks Urico xx4 KudoZ points were awarded for this answer

Summary of answers provided
5sign convention
 Andrés Martínez

14 mins   confidence:
sign convention

Explanation:
sign convention
Se refiere al convenio para dar valor positivo o negativo a las cifras de los cálculos.

http://lists.nau.edu/cgi-bin/wa?A2=ind0303&L=phys-l&F=&S=&P=...
How many of you use the Cartesian sign convention for optics?
I am used to the sign convention that has virtual images being negative and object distances being positive.

http://cord.org/step_online/st1-3/st13eii3.htm
C. Mirror formulas for image location

(...)

2. Sign convention. The sign convention to be used in conjunction with Equation 3-6 and Figure 3-18 is as follows.

Object and image distances p and q are both positive when located to the left of the vertex and both negative when located to the right.

The radius of curvature r is positive when the center of curvature C is to the left of the vertex (concave mirror surface) and negative when C is to the right (convex mirror surface).

Vertical dimensions are positive above the optical axis and negative below.

--------------------------------------------------
Note added at 16 mins (2006-02-25 11:01:45 GMT)
--------------------------------------------------

http://scienceworld.wolfram.com/physics/OpticsSignConvention...
Optics Sign Conventions

There are a number of different conventions used for keeping track of the orientations of images in optics. The "Cartesian" convention is used by Schroeder (1987). It is similar to that of Born and Wolf (1999) and Longhurst (1967). In this convention, distances to the left of the vertex are negative, and distances to the right are positive. Distances from the optical axis are positive if measured upwards.

--------------------------------------------------
Note added at 18 mins (2006-02-25 11:03:30 GMT)
--------------------------------------------------

http://panda.unm.edu/courses/finley/P262/OptSignConv2/OptSig...
Sign Conventions Used for Mirrors, Refracting Surfaces, and Lenses

 Andrés MartínezSpainLocal time: 17:25Native speaker of: SpanishPRO pts in category: 4
 Thanks Urico xx
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