Electric discharges; Scientific apparatus and instruments
When connected to a power source, a bright electric spark would flash between the two ends of the two outer posts. The middle glass post is made of photo gray glass (yellow tinted glass), which would have glowed. This instrument is visible in early...
People; Portraits; Santa Clara County (Calif.)--History; Women; Wright, Sue;
Ambrotype of Sue Wright (related to the Bradleys) wearing a black dress and choker, very light tinted cheeks. Inside covering is made of red and black velvets, cased in a papier mache case which opens on both ends.
Scientific apparatus and instruments; Santa Clara University (Calif.); Electric discharges;
When connected to a power source, a bright electric spark would flash between the two ends of the two outer posts. The middle glass post is made of photo gray glass (yellow tinted glass), which would have glowed. This instrument is visible in early...
