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Kenneth Swezey was born in Brooklyn on 11 June 1904. His mother, Carrie, was 42 at the time and his father, Edwin L. Swezey, was 47. He had a sister, Martha, who was 13 years older and a sister, Anna, who was 25 years older. [2]
A 1919 illustration of a Leclanché cell. The Leclanché cell is a battery invented and patented by the French scientist Georges Leclanché in 1866. [1] [2] [3] The battery contained a conducting solution (electrolyte) of ammonium chloride, a cathode (positive terminal) of carbon, a depolarizer of manganese dioxide (oxidizer), and an anode (negative terminal) of zinc (reductant).
Leclanché's "wet cell" (as it was popularly called) was the forerunner to the world's first widely used battery, the zinc–carbon battery. In 1876, Leclanché jellifies the electrolyte of his cell by adding starch to the ammonium chloride, making his cell more portable.
The lead-acid battery is still used today in automobiles and other applications where weight is not a big factor. The basic principle has not changed since 1859. In the early 1930s, a gel electrolyte (instead of a liquid) produced by adding silica to a charged cell was used in the LT battery of portable vacuum-tube radios.
Date/Time Thumbnail Dimensions User Comment; current: 12:22, 6 April 2014: 3 min 52 s, 480 × 360 (7.38 MB): Jacopo Werther == {{int:filedesc}} == {{Information |Description = Step-by-step video and audio instructions on how to prepare a wet mount specimen of eukaryotic animal cells; specifically Human epithelial cells from the inside of the cheek.
The penny battery experiment is common during electrochemistry units in an educational setting. Each cell in a penny battery can produce up to 0.8 volt, and many can be stacked together to produce higher voltages. Since the battery is a wet cell, the effectiveness will be reduced when the electrolyte evaporates.
The anode and the pot were then immersed in an ammonium chloride solution. The liquid acted as the electrolyte, readily seeping through the porous pot and making contact with the cathode material. Leclanché's "wet" cell became the forerunner to the world's first widely used battery, the zinc-carbon cell.
A wet cell battery has a liquid electrolyte. Other names are flooded cell, since the liquid covers all internal parts or vented cell, since gases produced during operation can escape to the air. Wet cells were a precursor to dry cells and are commonly used as a learning tool for electrochemistry.