Dimensional Analysis. Dimensional Analysis (also called Factor-Label Method or the Unit Factor Method) is a problem-solving method that uses the fact that any number or expression can be multiplied by one without changing its value. It is a useful technique.
In 1887, the first dry cell battery was invented. Unlike previous batteries, it used a paste electrolyte instead of a liquid.
1896 â Columbia, a dry cell battery manufactured by National Carbon Company, became the first commercially available battery sold in the U.S. The National Carbon Company later became Eveready Battery Company â known today as EnergizerÂ®.