Scientific chalkboard with physics and chemistry equations, diagrams, and laboratory glassware icons.
Schlüsselwörter
blackboard,
science,
chemistry,
physics,
education,
drawing,
vignetting,
handwritten,
formula,
laboratory,
glassware,
beaker,
flask,
planet,
atom,
experiment,
research,
technology,
learning,
cognition,
scientific,
medicals,
background,
illustration,
study,
blackboard,
chart,
graphic,
hand-drawn,
vintage
Deutsch
