closeup vintage man writing in a ledger while riding a train
Edisons successful carbon filament light closeup
WWII scientist working on breaking the Enigma machine code
camera moves around the desk of a 1885 scientist
closeup businessman opening folder and writing on legal documents
WWII scientist taking measurements on the Enigma machine
1885 scientist looking through his microscope
closeup of period nurse using a microscope takes notes
doctor studying a hand joint
1930s doctor looks at testube and writes on a clipboard
Victorian detective writing and looking at paperwork
businessman working on paperwork focus on desk lamp 4k
closeup of businessman writing on a legal document 4k
closeup victorian scientist making notes from microscope
1885 scientist writing in his journal
Victorian era scientist thinks about what he sees in the microscope
shallow DOF of businesswoman signing a legal document
victorian scientist looking at medicines and taking notes
A Victorian era scientist working in his laboratory using a dip pen to make some notations of his work.
macro 18th century coins and man writing with a quill pen
victorian scientist looks through microscope and takes notes
Two young scientists discussing and using a tablet PC 4K
A Victorian era scientist working in his laboratory using a dip pen to document observations made through a brass microscope typical of the time period.
victorian woman scientist writing notes in a book
WWII scientist working on the Enigma code machine
man writing notes
rack focus scientific equation on chalk board.
victorian apothecary woman making notes from medicines
victorian woman scientist writing notes
A closeup of an alchemist or scientist from around 1898 time period working in his laboratory documents his work.
wide shot businessman writing on a legal document
shallow DOF of businesswoman writing on a document
victorian scientist making notes on chemicals
Victorian detective writing notes using a dip pen
teenagers in a school chemistry class
vintage businessman man on a train writing and thinking
businessman working on documents at his desk 4k
Portrait of tired senior man to not listens notations from his serious wife when they together sitting on the couch at home. Family problems
victorian scientist making notes for different chemicals
Edison's failure inventing the light bulb
19th century apothecary or chemist using a dip pen writing notes
macro shot of businessman writing on a legal document focus on foreground
Friendly student's cheerful smile
1940s vintage writer typing and correcting his story
vintage man writing in a ledger while riding on a train