Porträt eines glücklichen Wissenschaftlers, der im Labor Flaschen mit Reagenzien in den Händen betrachtet - Stockfoto & -bild

Serious grey haired scientist in lab coat looking at camera with arms crossed

Portrait of excited scientist holding bottles with reagents in laboratory

Photo of charming attractive serious strict old man hold hands display hourglass sand isolated on grey color background.

Emotional Handsome gray haired senior man vaccinated with a syringe in hand. Immunization and health care concept

Breathtaking new life. Senior man holding a video game controller isolated on colorful background. Full of emotions. Leisure activity. Has the worst videogames team. Trying to get the highest level.

Senior man with equipment for soldering. Working at home.

Smiling mature businessman with clipboard behind window on sunny day

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Portrait of excited scientist working with reagent in flask in laboratory

Portrait of smiling senior man looking at camera while sitting at served table at home

Bearded chemist in goggles with reagents in tubes and tablet in laboratory

Concentrated bearded chemist in goggles with reagents in tubes in laboratory

Concentrated bearded scientist working with microscope in laboratory

Portrait of excited scientist working with reagent in flask in laboratory