Lecture with formulas on the blackboard in front of studentsLecture with formulas on the blackboard in front of students
A fiery retro car with a trail of fire on the background of a red-black skyA fiery retro car with a trail of fire on the background of a red-black sky
Seashells , a star on the sand on the shore and a seagull in the skySeashells , a star on the sand on the shore and a seagull in the sky
Reflection of trees on the surface of the river. twilight landscapeReflection of trees on the surface of the river. Twilight landscape