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Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [Professor working with bright light.]

Columbia University [Professor working with bright light.]


Columbia University [Person holding a bright light.]

Columbia University [Person holding a bright light.]


[Planetarium monster (Hayden species), Zeiss creation.]

[Planetarium monster (Hayden species), Zeiss creation.]


Columbia University [Science professor performing an experiment.]

Columbia University [Science professor performing an experiment.]


Columbia University [Science professor performing an experiment.]

Columbia University [Science professor performing an experiment.]


Columbia University [Man pouring a solution over a fire.]

Columbia University [Man pouring a solution over a fire.]


Columbia University [Man holding a bright light.]

Columbia University [Man holding a bright light.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Man welding.]

Columbia University [Man welding.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]


Columbia University [Man performing a science experiment.]

Columbia University [Man performing a science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University  [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [Science experiment.]

Columbia University [Science experiment.]


Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]

Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]


Columbia University [Professor working with bright light.]

Columbia University [Professor working with bright light.]


Columbia University [Professor pouring a solution over burning paper.]

Columbia University [Professor pouring a solution over burning paper.]


Columbia University [Person holding a bright light.]

Columbia University [Person holding a bright light.]


Thomas Edison.

Thomas Edison.

Photographs, Prints & Drawings

Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Portrait, Thomas Edison in His Laboratory, His Wife and Son.

Portrait, Thomas Edison in His Laboratory, His Wife and Son.


Mr. & Mrs. T. Edison.

Mr. & Mrs. T. Edison.


Mr. & Mrs. T. Edison.

Mr. & Mrs. T. Edison.


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