Early stellar spectral classifications followed an alphabetical system based on hydrogen line strength, initially lacking a consistent temperature-based organization. Angelo Secchi's 1866 ...
To describe a new method, the Optical Coherence Tomography (OCT) Glaucoma Staging System, for classifying retinal nerve fiber layer (RNFL) damage assessed with OCT. The OCT Glaucoma Staging System was ...
MK classifications are presented for the components of close visual double stars with separations mostly between one and three arc seconds. Twenty-one pairs have individual components classified, four ...
This is a preview. Log in through your library . Journal Information Current issues are now on the Chicago Journals website. Read the latest issue. Since its inception in 1912, Isis has featured ...
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