A red heart stuck in a crack in the wooden surfaceA red heart stuck in a crack in the wooden surface
Reflection of the bright sky in the smooth surface of the night riverReflection of the bright sky in the smooth surface of the night river
Reflection in the water surface of trees and mountainsReflection in the water surface of trees and mountains
A red helicopter flies over the surface of the oceanA red helicopter flies over the surface of the ocean
Water surface against the background of autumn forestWater surface against the background of autumn forest
Reflection of landscape architecture in the water surfaceReflection of landscape architecture in the water surface
The fiery sunset is reflected in the water surface of the lakeThe fiery sunset is reflected in the water surface of the lake
The reflection of the gentle sky on the calm surface of the waterThe reflection of the gentle sky on the calm surface of the water
A quiet autumn dawn over the mirror surface of the lakeA quiet autumn dawn over the mirror surface of the lake
В математике: граница, отделяющая геометрическое тело от внешнего пространства. Наружная сторона чего-н..