@Test
public void testEuclideanDistance() {

	Particle p1 = new Particle();
	p1.setVector(11, 3.0, 0.0, 0.0, 0.0, 0.0, 0.0);
	Particle p2 = new Particle(22, 0.0, 4.0, 0.0);
	assertEquals(p1.euclideanDistance(p2), 5.0, 1e-6);
}