Solar and chemical spectra
                                Date
                            
                            
                                1890
                            
                            
                        
                            
                            
                            
                                Creator
                            
                            
                                Joseph Norman Lockyer (1836 - 1920, British) , Astronomer
                            
                            
                        
                            
                            
                            
                                Object type
                            
                            
                            
                        
                            
                            
                            
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                                Technique
                            
                            
                            
                        
                            
                            
                            
                                Dimensions
                            
                            
                                height (print): 139mm
width (print): 249mm
                            
                        
                            
                            
                            width (print): 249mm
                                Subject
                            
                            
                            
                        
                            
                            
                            
                                Description
                            
                            
                                Spectral lines from the Sun, together with lines for the chemical elements Magnesium, Nitrogen and Lead. The images were obtained using a Steinheil spectroscope, prisms and telescopes at varying magnifications.      
Plate from the manuscript version of the paper ‘On the chief line in the spectrum of the nebulae’, by J. Norman Lockyer, Proceedings of the Royal Society, vol.48 (1890), pp.167-198. The illustration was printed as figure 1 in the published paper.
The image has a pencilled reduction at the left and right sides. Annotated in pencil: ‘To be engraved the exact size, so as to fill the page. It must not be reduced in length’.
Sir Joseph Norman Lockyer (1836-1920) British astronomer, was elected a Fellow of the Royal Society in 1869.
                            
                            
                        
                            
                            
                            Plate from the manuscript version of the paper ‘On the chief line in the spectrum of the nebulae’, by J. Norman Lockyer, Proceedings of the Royal Society, vol.48 (1890), pp.167-198. The illustration was printed as figure 1 in the published paper.
The image has a pencilled reduction at the left and right sides. Annotated in pencil: ‘To be engraved the exact size, so as to fill the page. It must not be reduced in length’.
Sir Joseph Norman Lockyer (1836-1920) British astronomer, was elected a Fellow of the Royal Society in 1869.
                                Associated place