A is already considered very large; for example, the capacitance of the Earth's ionosphere relative to the ground is estimated to be only about 1 F.
The (abbreviated abF) is an obsolete unit of capacitance from the centimeter-gram-second (CGS) electromagnetic system of units. It is equivalent to 10910 to the nineth power abfarad
farads (1 gigafarad) in the modern International System of Units (SI). A is already considered very large; for example,
Outline a of why these extreme units were originally proposed. Abfarad - Definition, Meaning & Synonyms - Vocabulary.com A is already considered very large