Thermodynamics--Experiments; Scientific apparatus and instruments
The brass ball will just pass through a brass ring when cold, but when the ball is heated in boiling water it expands so that it no longer passes through the ring. The ball and ring demonstration of heat expansion has been in use since the early...
Hupa basket hats; Mission Santa Clara; Santa Clara (Calif.); Santa Clara County (Calif.)--History; Yurok basket hats;
Cap from the Yurok or Hupa region. Made of grass fibers, brachen fern, and willow cane. Brown round basket, bowl shaped. These caps were worn low on the forehead while carrying a burden basket. They were used to reduce the potential chaffing caused...
Gift baskets; Mission Santa Clara; Santa Clara (Calif.); Santa Clara County (Calif.)--History; Technology;
Clam shell, woodpecker feathers, quail top knot feathers. Willow cane, brachen fern, and devil's claw weed. Bowl-shaped, light and dark brown. Dark brown pattern forms feather-like edges. Tiny red woodpecker feathers are woven in with five groups...
"This unique piece of apparatus uses Lissajous figures to show that the ratio of the frequency ratios in a diatonic scale are ratios of small numbers. On the side is an air-driven vibrating reed with a small mirror attached to its free end....
Scientific apparatus and instruments; Anamorphosis (visual perception)--Instruments
Described as one of many "Fine Optical Toys" in James W. Queen's Catalogue of Microscopes, Accessories and Sundries, 1890, the anamorphoscope mirror rectifies distorted drawings. Physical Description: Cylindrical mirror, black wooden top...
Scientific apparatus and instruments; Santa Clara University (Calif.); Thermodynamics--Experiments;
The brass ball will just pass through a brass ring when cold, but when the ball is heated in boiling water it expands so that it no longer passes through the ring. The ball and ring demonstration of heat expansion has been in use since the early...
Scientific apparatus and instruments; Santa Clara University (Calif.)
""This unique piece of apparatus uses Lissajous figures to show that the ratio of the frequency ratios in a diatonic scale are ratios of small numbers. On the side is an air-driven vibrating reed with a small mirror attached to its free...
The Goniometer is an instrument for measuring the angles of crystals by observing the direction of a beam of light reflected from their face. The instrument was invented by W.H. Wollaston in 1807. Physical Description: Round brass base with black...
Crova's apparatus was designed for the purpose of representing vibratory movements on the screen, with 8 disks. Turning the crank past a vertical slit caused the disks to rotate, while a beam of light from the optical system impinged on the slit...
The Kinnersley's Thermometer was an apparatus designed to demonstrate the heating power of an electric spark by showing the expansion of air when an electric spark is passed through it. Physical Description: Glass tube with brass base and top,...
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; 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.
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...
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...
Scientific apparatus and instruments; Induction coils
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...
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...
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. Physical Description: Wooden pedestal base, ivory-colored face,...
