"ephemeral experience" means something that is short-lived or lasts only for a brief moment. It refers to an experience or feeling that is temporary and does not last for a long time. Full definition
By combining them with pigment and light — or the lack of it — he transforms the viewer's perception of his work, creating ephemeral experiences as much as actual objects. (everythingatonce.com)
Her work focuses on ephemeral experiences pertaining to light, air, and sound, often involving audience engagement. (madmuseum.org)
Ron Johnson's paintings are exquisitely rendered abstractions in which light, color, and shape dance rhythmically, creating a transcendental and ephemeral experience for the viewer. (minusspace.com)