Chelsea holds a B.F.A. from the Maryland Institute, College of Art (2005) and an M.A.T. from Johns Hopkins University (2011.) In addition to cartooning and being a first-time mother, she has worked as an elementary school art teacher.
The concept of primary energy is used in energy statistics in the compilation of energy balances, as well as in the field of energetics. In energetics, a primary energy source refers to the energy forms required by the energy sector to generate the supply of energy carriers used by human society.
Primary Sources. 1  the main text or work that you are discussing (e.g. a sonnet by William Shakespeare; an opera by Mozart) 2  actual data or research results (e.g. a scientific article presenting original findings; statistics) 3  historical documents (e.g. letters, pamphlets, political tracts, manifestoes)