Spectrometer
Posted inTechnology

Spectrometer

National Museum of American History Object DetailsFranz Schmidt & Haensch Spectrometer. 1981.0826.02. DescriptionThis is a solid and substantial instrument of iron and brass. The horizontal circle, 4.25 inches diameter, is…
Acts_1_8
Posted inQT

Acts 1:8

But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends…
Telephone
Posted inTechnology

Alexander Graham Bell’s Large Box Telephone

National Museum of American HistoryObject Detailsinventor : Bell, Alexander Graham DescriptionOne of two telephones used by Alexander Graham Bell in a demonstration that took place between Boston and Salem, Massachusetts…