Source of file PhysicalConstants.php

<?php

/**

 * Copyright 2018 University of Liverpool

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

namespace pgb_liv\php_ms\Constant;

/**

 * Static class containing physical constant values in daltons.

 *

 * @see https://physics.nist.gov/cuu/Constants/index.html

 * @author Andrew Collins

 */

class PhysicalConstants

{

    /**

     * Mass of an electron

     *

     * @var double

     */

    const ELECTRON_MASS = 0.000548579909070;

    /**

     * Mass of a proton

     *

     * @var double

     */

    const PROTON_MASS = 1.007276466879;

}