Usage

This SI assemblage is called afterwards James Prescott Joule. As with every International System of Units (SI) assemblage whose name is acquired from the able name of a person, the aboriginal letter of its attribute is high case (J). However, if an SI assemblage is spelled out in English, it should consistently activate with a lower case letter (joule), except in a bearings area any chat in that position would be capitalized, such as at the alpha of a book or in capitalized actual such as a title. Note that "degree Celsius" conforms to this aphorism because the "d" is lowercase.— Based on The International System of Units, area 5.2.