GEISSLER TEST Meaning and
Definition
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The Geissler test refers to a scientific experiment conducted with an apparatus known as a Geissler tube. A Geissler tube is a sealed glass tube that contains a low-pressure gas, typically neon or other noble gases. The test is named after the German physicist Heinrich Geissler, who invented the tube in the mid-19th century.
The Geissler test is performed by applying a high voltage to the two electrodes of the tube, causing the gas inside to ionize and emit a glow. This glow is known as the Geissler glow or discharge. The appearance of the glow can vary depending on the specific gas used in the tube and the pressure within.
This test is conducted to study the behavior and properties of various gases at low pressures. It allows scientists to investigate phenomena such as electrical conductivity, spectral emissions, and the effects of electromagnetic fields on gases. The Geissler test is commonly used in physics laboratories and in the field of spectroscopy.
The Geissler tube and the associated test played a significant role in the development of vacuum technology and the understanding of electrical discharges. This experiment is an important tool in the study of atomic and molecular physics, as it enables researchers to explore the fundamental characteristics and behavior of gases at reduced pressures.
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For albumin in the urine: two bits of filter paper, impregnated, respectively, with citric acid and with a mixture of corrosive sublimate and potassium iodide, are dropped into the urine; albumin, if present, will be precipitated.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for GEISSLER TEST
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Etymology of GEISSLER TEST
The word Geissler test is named after the German physicist and glassblower Heinrich Geissler (1814-1879). The term originates from his invention, the Geissler tube, which is a glass tube used in physics experiments to demonstrate electrical phenomena and the behavior of gaseous discharges. The Geissler tube, also known as a Geissler discharge tube, consists of a sealed glass vessel containing a partial vacuum and electrodes on either end. When a high voltage is applied to the electrodes, it induces a glow discharge inside the tube, resulting in various colors and patterns depending on the gas used. This tube became a common tool for scientific demonstrations and is often referred to as the Geissler tube, hence the name Geissler test.
