Silver and white abstract designed Happy Birthday Cards

blue abstract wonderful design on a white card with gold happy birthday written.

blue star with silver abstract line design on a white happy birthday card.

Abstract Lights

lightw wave is electromagnetic emission, particularly emission of a wavelength that is evident to the human eye (about 400–700 nm, or possibly 380–750 nm). In physics, the term light sometimes refers to electromagnetic emission  of any wavelength, whether evident or not.