import '../../globals.js';
// Copyright 2019-2023, University of Colorado Boulder
/**
 * From wikipedia:
 *  > A physical constant, sometimes fundamental physical constant or universal constant, is a physical quantity that is
 *  > generally believed to be both universal in nature and have constant value in time. It is contrasted with a
 *  > mathematical constant, which has a fixed numerical value, but does not directly involve any physical
 *  > measurement.
 *
 * Here is a link to examples of these types of "universal constants"
 * https://cosmologist.info/teaching/Cosmology/Physical_constants.pdf
 *
 * @author Michael Kauzmann (PhET Interactive Simulations)
 */
import phetCore from './phetCore.js';
const PhysicalConstants = {
    /**
     * The coefficient in Newton's universal law of gravitation: F = G * m1 * m2 * r^-2
     * The value is described in:
     * https://en.wikipedia.org/wiki/Gravitational_constant
     * https://physics.nist.gov/cgi-bin/cuu/Value?bg
     * https://www.quora.com/What-is-the-value-of-gravitational-constant-G
     */
    GRAVITATIONAL_CONSTANT: 6.67430E-11, // m^3 kg^-1 s^-2
    /**
     * The amount of gravity on Earth.
     * m/s^2
     */
    GRAVITY_ON_EARTH: 9.81
};
phetCore.register('PhysicalConstants', PhysicalConstants);
export default PhysicalConstants;
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