Scientific apparatus and instruments; Optical instruments
The spherometer was used to measure the curvature of lenses. Physical Description: In mahogany case with sliding lid. Calibrated brass disk on three legs.
Scientific apparatus and instruments; Santa Clara University (Calif.)
This device is for measuring differences in temperature and was named for British natural philosopher John Leslie. It is considerably more sensitive than a standard thermometer.
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; 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. Physical Description: Seven movable mirrors, pivoted on brass holders, set in an...
This instrument allowed water to be heated to a temperature higher than boiling point at atmospheric pressure, resulting in considerably high pressure inside. Papin designed a model of a digester in 1680 that allowed a piston inside a cylinder to...
Scientific apparatus and instruments; Santa Clara University (Calif.)
This instrument allowed water to be heated to a temperature higher than boiling point at atmospheric pressure, resulting in considerably high pressure inside. Papin designed a model of a digester in 1680 that allowed a piston inside a cylinder to...
Scientific apparatus and instruments; Santa Clara University (Calif.); Electric discharges; X-ray tubes;
This instrument appears to be an early type of vacuum discharge tube or x-ray tube. The glass tube contains metal electrodes that have been sealed and from which the air has been removed by a vacuum system.
Electric discharges; X-ray tubes; Scientific apparatus and instruments
This instrument appears to be an early type of vacuum discharge tube or x-ray tube. The glass tube contains metal electrodes that have been sealed and from which the air has been removed by a vacuum system. Physical Description: Glass bulb with...
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...
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...
