air air condition architecture chimney climate conditioning duct ducts electronics exhaust factory industrial industry iron pipe technology tube ventilation abstract appearance background blended blue colored coloured columned columns curved curves decoration decorative design details horizontal interconnected interlaced interlinked interwoven light lined lines patterns perspectives rolled rolls rows shape shaped shapes surface surfaces texture textured textures thick thin tubed tubes twisted twists vertical vibrant wallpaper watery waves flower garden grow Kniphofia natural nature orange petal plant stems summer tubular yellow black child children duotone grayscale kid kids metal monotone oval park playground playing rest sky toy toys white wood animal animals eat feed ferret ferrets food hungry pasta pet pets tongue activity bicycle bike city funny groningen illustration outdoors people sports tandem Copenhagen Denmark escalator escalators HDR metro moving Nyberg stair staircase stairway station subway aid anesthesia cancer care clinic cure curing drip drip feeding electrolyte emergency feeding health health care healthcare hospital illness infusion intravenous drip iv iv pole liquid medic medical medicine nutrition pain parenteral procedure recovery rescue saline sick sickness sterile therapy three way cock three way valve tubing urgency backdrop carpet carpeting carpets color colors colour colours connected connections detailed intermeshed materials soft style textiles weave woven angles geometric mosaics paint squares swirling swirls