WWII scientist working on breaking the Enigma machine code
Businessman reading and signing documents sitting by table in office near New year tree
WWII scientist taking measurements on the Enigma machine
camera moves around the desk of a 1885 scientist
Edisons successful test of a carbon filament
doctor studying a hand joint
closeup businessman opening folder and writing on legal documents
businessman working at his desk rack focus to paperwork 4k
victorian apothecary woman making notes from medicines
1885 scientist looking through his microscope
Victorian detective writing and looking at paperwork
closeup victorian scientist making notes from microscope
Focused Individual Writing at a Compact Desk
vintage businessman man on a train writing and thinking
victorian woman scientist writing notes in a book
Victorian detective writing notes using a dip pen
macro 18th century coins and man writing with a quill pen
close shot of businessman writing on a legal document
dolly 1930 nurse making notes from the microscope
Two young scientists discussing and using a tablet PC 4K
1885 scientist writing in his journal
victorian scientist looks through microscope and takes notes
shallow DOF of businesswoman signing a legal document
Victorian era scientist thinks about what he sees in the microscope
victorian woman scientist writing notes
victorian scientist making notes on chemicals
WWII scientist working on the Enigma code machine
teenagers in a school chemistry class
rack focus scientific equation on chalk board.
Scene tracks by a 1890 era scientist working in his laboratory using a dip pen to make some notations in a notebook of his work.
A Victorian era scientist working in his laboratory using a dip pen to make some notations of his work.
A closeup of an alchemist or scientist from around 1898 time period working in his laboratory documents his work.
Portrait of tired senior man to not listens notations from his serious wife when they together sitting on the couch at home. Family problems
19th century apothecary or chemist using a dip pen writing notes
closeup vintage man writing in a ledger while riding a train
1930s doctor looks at testube and writes on a clipboard
closeup of period nurse using a microscope takes notes color version
victorian scientist making notes for different chemicals
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.
man writing notes
Friendly student's cheerful smile
wide shot businessman writing on a legal document
businessman working on documents at his desk 4k
victorian scientist looking at medicines and taking notes