H line

H line may refer to: H Line (RTD), a light rail line in Denver and Aurora, Colorado, U.S. H Line, a portion of the North Carolina Railroad between Greensboro and Cary, North Carolina, US H (Los Angeles Railway), former streetcar service Line H (Buenos Aires Underground), a metro line in Buenos Aires, Argentina The 404.7nm emission band from a Mercury-vapor lamp The calcium H line, an absorption line in the Sun's spectrum at 396.9nm Pencil skirt, sometimes called a H-line skirt

See also H band (disambiguation)