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            This is a file from the  Wikimedia Commons. Information from its  description page there is shown below.  Commons is a freely licensed media file repository.  You can help. 
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           | Description | 
           
             English:  Scale model of the  Earth and the  Moon, with a  beam of light traveling between them at the  speed of light. It takes approximately 1.26 seconds. 
            Español: Modelo a escala de la  Tierra y la  Luna, con un rayo de luz viajando entre ellas a la  velocidad de la luz. Le lleva aproximadamente 1.26 segundos. 
            Galego: Modelo a escala da  Terra e a  Lúa, con un raio de luz viaxando entre elas á  velocidade da luz. Lévalle aproximadamente 1.26 segundos. 
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           Made by English Wikipedian  en:User:Cantus. | 
          
          
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            en:User:Cantus | 
          
          
           Permission ( Reusing this file) | 
           
            
             
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              Permission is granted to copy, distribute and/or modify this document under the terms of the  GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.  Subject to  disclaimers.www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue 
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        Performance 
        If you see the beam taking more than 1.26 seconds to travel from Earth to Moon, then your browser is displaying it too slowly. See talk page for details.
        Windows 
        
         - IE8: Works in compatability and regular mode on 2GHz C2D
 
         - Firefox: Normal on AMD Athlon 64 X2 6400+ (3.2GHz) - Firefox 3.6
 
         - Firefox: Normal on Core i7 860 (2.93 Ghz) - Firefox 3.5.5
 
         - Safari: Works fine on Safari 4.0.2 (Tested: Safari for Windows 4.0.2 Build 530.19.1)
 
         - Chrome: Normal on 2 GHz Intel Core Duo and 3 Ghz Pentium 4
 
         - Opera: 10.20 - Normal even on Intel Atom
 
        
        Mac 
        
         - Firefox: Normal on 2 GHz Intel Core 2 Duo
 
         - Safari: Normal on 2 GHz Intel Core 2 Duo
 
         - OmniWeb: ??sadad
 
         - Opera: Normal on 2.66 GHz Intel Core 2 Duo
 
         - Chrome: Normal on 2.2 GHz Intel Core 2 Duo
 
        
        Linux 
        
         - Firefox: Normal on 2 GHz Intel Core 2 Duo - Firefox 3.5.5Xd
 
         - Konqueror: Slow (nearly 3 seconds) on 2 GHz Intel Core 2 Duo - Konqueror 4.3.2
 
         - Chrome: Normal on 2 GHz AMD Turion TL-60 - Chrome 4.0.249.43
 
        
        
        
        
       File usage
       
        The following pages on Schools Wikipedia link to this image (list may be incomplete):
        
        
       
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