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Alan Turing a closeup portrait from English money - pound

Indoor image of an exhausted male teacher or professor feeling sleepy in the classroom. He is standing against blackboard where his thought bubble is drawn depicting his sleepiness condition. The bespectacled man is in formal shirt, sweater and coat. One person, waist up, horizontal composition with copy space.

Frustrated senior teacher standing in front of a chalk board.

Simon Rodriguez Portrait Pattern Design on Venezuelan Bolivar Currency

Man With Mathematical Formula On Blackboard

University student posing in front of a black board.

$Genius nerd easy found the solution of a mathematical formula in blackboard$

Macro shot of the five turkish lira banknote.

Isaac Newton a closeup portrait from money

Richmond, Virginia, USA - July 9th, 2013: Cancelled Stamp From Israel Featuring The Scientist, Albert Einstein.

A conceptual portrait of a scientist holding a shining crystal lattice between his hands, on a dark background covered with scientific formulas

Simon Rodriguez Portrait Pattern Design on Venezuelan Bolivar Currency

The young businessman tries to solve problems

High resolution photograph of a detail from a painting of a Man with thin moustache

Professor Standing By Blackboard In Classroom

Retro-styled professor, with mathematical equations on chalkboard.

Young man with terrified face looking at camera

Nikola Tesla (1856 - 1943). Black and white portrait from Serbian banknote. Genius scientist, inventor, electrical engineer, mechanical engineer, and futurist

Nicolaus Copernicus a closeup portrait from old Polish money - Zloty

Portrait of mature adult man in front of blackboard

A conceptual portrait of a scientist who holds future thermonuclear energy in his hands, on a blue background covered with scientific formulas

Wide angle photo of mad scientist / whacky professor.

Portrait Of Teacher By Blackboard In Classroom

Richmond , Virginia, USA - July 22, 2013: Cancelled Stamp From San Marino Featuring The American Scientist, Albert Einstein. Albert Einstein Lived From 1879 Until 1955.

Young man looking away and standing near blackboard

Portrait of a male teacher at a university sitting in a comfortable leather chair department.

Bartolomeu Dias a closeup portrait from old Portuguese money - Escudo

Portrait of adult man with big handlebar mustache in front of green dirty background.The model is wearing a red and white plaid button down shirt.He is smiling and looking at the camera.Shot in studio with medium format DSLR camera Hasselblad.

Science modern school. Back to school. Mature bearded man in glasses. Education concept. Intellectual task. Study in college. Cognitive development. Private lesson. Teacher mentoring school projects.

Mad scientist/boffin looks up in search of inspiration.

Free Images: "bestof:face history man mathematician mimic people physicist science"

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