Balayage vs. Ombre — What's the Difference?

In potential theory, a mathematical discipline, balayage (from French: balayage "scanning, sweeping") is a method devised by Henri Poincaré for reconstructing a harmonic function in a domain from its values on the boundary of the domain.In modern terms, the balayage operator maps a measure μ on a closed domain D to a measure ν on the boundary ∂ D, so that the Newtonian potentials of μ and ν coincide outside D ¯ {\displaystyle {\bar {D}}} . The procedure is called balayage since the mass is "swept out" from D onto the boundary.

A trick-taking card game, played by three players with 40 cards, that was popular in Europe during the 1600s and 1700s.

A technique of coloring hair in which the stylist applies the color by hand to create natural-looking, graduated layers of highlights with a less apparent regrowth line than in traditional highlighting.

A Spanish card game, usually played by three people. It involves forty cards, omitting the ranks of 8, 9 and 10.

A hair colouring technique in which colour is applied by hand.

(archaic) A large Mediterranean food fish, Umbrina cirrosa

A method for reconstructing a harmonic function.

(colors) A gradual blending of one color hue to another, usually moving tints and shades from light to dark.

A large Mediterranean food fish (Umbrina cirrhosa): - called also umbra, and umbrine.