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