De Forest, Lee, 1873-1961; Postcards; Radio--Receivers and reception; San Jose (Calif.); Santa Clara County (Calif.)--History; Technology;
Color postcard of Gilfilan Brothers of Los Angeles cathedral style home broadcast radio receiver. Written on back of postcard, "In the early 1920's, 'wireless' devices used by amateurs were wires and circuitry attached to a wood base, called a...
Scientific apparatus and instruments; Santa Clara University (Calif.); Camera lucida;
An artist's aid for drawing, the camera Lucida was a portable device that was used to reproduce visual images on to paper. An adjustable prism mounted on the end of a supporting arm reflects the surrounding light and produces the image onto the...
Scientific apparatus and instruments; Santa Clara University (Calif.); Simple machines; Archimedean screw
A simple mechanical device credited to Archimedes. When the lower end of the screw is placed in water, turning the device raises water to the top. This principle has various applications for drainage and irrigation, but the instrument can also be...
Scientific apparatus and instruments; Santa Clara University (Calif.); Induction coil
The Ruhmkorff induction coil consists of two separate coils of wire one inside the other wound around a cylinder with a central core of soft iron rods. When a current is passed through the first primary coil, current is induced in the secondary...
Scientific apparatus and instruments; Santa Clara University (Calif.); Optical instruments
This device was used with a prism to demonstrate the seven colors of the specturm present in a beam of sunlight: red, orange, yellow, green, blue, indigo and violet.
Scientific apparatus and instruments; Santa Clara University (Calif.); Piezometer
The Oersted Piezometer was used to determine the coefficient of the compressibility of liquids. Gases would have been pumped into the chamber through the funnel at the top. The pressure of the gases would have been measured via the water barometer...
Scientific apparatus and instruments; Santa Clara University (Calif.); Galvanometer
A galvanometer is an instrument used to measure the presence, direction, and strength of small electric currents in a conductor. A magnetic needle is deflected by the presence of an electric current in a nearby conductor. The needle turns at right...
Alaska; Santa Clara University (Calif.) Archives; Hubbard, Bernard Rosecrans, 1888-1962; Camp scenes
Camp in gully on floor of Valley of 10,000 Smokes. Putting rocks around tent as protection against violent winds. Formerly incandescent sand floor of valley back of tent. Stratified airfall deposit is seen behind tent. Large boulders are used to...
Dormitory 2nd Division in the Ship, used as a dorm until 1912 when O'Connor Hall opened. With the construction of O'Connor Hall, Seniors enjoyed the privacy of two-man rooms. Other students continued to share common sleeping quarters.
Santa Clara University (Calif.); Santa Clara (Calif.); Mission Santa Clara
This image is one of the earliest images of Mission Santa Clara, after 1855. The adobe wall extends from the Baptistry to the arch of old gate to Major Domo Ignacio Alviso's headquarters. The building at right, known as California Hotel, was a...
Santa Clara University (Calif.); Jails; Santa Clara (Calif.); Adobe buildings
This was the oldest jail in California built on the old Gardner property after the second Mission Santa Clara site was erected near the present Santa Clara depot in 1818. The structure was razed on January 12, 1922. This image was taken as workmen...
