Location Kanazawa University Museum

The Fourth Higher School Physics Experiment Apparatus: Kirchhoff-Bunsen Spectroscope

One of the pieces of educational experiment apparatus used at The Fourth Higher School. This item is a Kirchhoff-Bunsen Spectroscope, and was used for optics education. It consists of three lens barrels and one prism in the center. In the collimator (focusing) lens barrel, light from a gas burner's flame is taken into the interior through a slit, and after passing through two lenses enters the central prism, where it is separated and enters the eyepiece barrel. An image is created at the eyepiece, and the spectrum of the incident light can be observed. When the sample solution to be analyzed is attached to a platinum wire and placed in the flame of the gas burner, a flame with a color specific to the metal elements contained in the sample is produced. The sample can be identified by observing the spectrum of this flame. In the other lens barrel, there is a micrometer with a transparent scale carved into black glass (micrometer lens barrel). The micrometer image is projected onto the previous spectrum and used to measure the wavelength of the spectrum. This item was manufactured by C. Gerhardt, a chemistry experiment apparatus manufacturer in Bonn, Germany, founded in 1846.

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