001/*
002 * Units of Measurement API
003 * Copyright (c) 2014-2021, Jean-Marie Dautelle, Werner Keil, Otavio Santana.
004 *
005 * All rights reserved.
006 *
007 * Redistribution and use in source and binary forms, with or without modification,
008 * are permitted provided that the following conditions are met:
009 *
010 * 1. Redistributions of source code must retain the above copyright notice,
011 *    this list of conditions and the following disclaimer.
012 *
013 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions
014 *    and the following disclaimer in the documentation and/or other materials provided with the distribution.
015 *
016 * 3. Neither the name of JSR-385 nor the names of its contributors may be used to endorse or promote products
017 *    derived from this software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
021 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
022 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
023 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
026 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
028 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package javax.measure.quantity;
031
032import javax.measure.Quantity;
033
034/**
035 * Number of elementary entities (molecules, for example) of a substance. The metric system unit for this quantity is "mol" (mole).
036 *
037 * The mole, symbol mol, is the SI unit of amount of substance. One mole contains
038 * exactly 6.022 140 76 × 10²³ elementary entities. This number is the fixed numerical
039 * value of the Avogadro constant, NA, when expressed in the unit mol⁻¹ and is called
040 * the Avogadro number.
041 *
042 * The amount of substance, symbol n, of a system is a measure of the number of
043 * specified elementary entities. An elementary entity may be an atom, a molecule, an
044 * ion, an electron, any other particle or specified group of particles.
045 * This definition implies the exact relation Nₐ = 6.022 140 76 × 10²³ mol⁻¹.
046 *
047 * Inverting this relation gives an exact expression for the mole in terms of the defining constant NA:
048 *
049 * 1 mol = 6.02214076 × 10²³ / Nₐ
050 * <br>
051 * <dl>
052 * <dt><span class="strong">API Note:</span></dt><dd>SI Base Unit</dd>
053 * </dl>
054 * 
055 * @author <a href="mailto:jean-marie@dautelle.com">Jean-Marie Dautelle</a>
056 * @author <a href="mailto:werner@uom.technology">Werner Keil</a>
057 * @author <a href="mailto:thodoris.bais@gmail.com">Thodoris Bais</a>
058 * @version 2.1
059 * @since 1.0
060 *
061 * @see <a href="http://en.wikipedia.org/wiki/Amount_of_substance">Wikipedia: Amount of Substance</a>
062 */
063public interface AmountOfSubstance extends Quantity<AmountOfSubstance> {
064}