Правильный перевод текста although light shows many of the properties of waves it also behaves sometimes as if it consisted of little particles, only they are not made of any substance but energy. these little packets of energy are called photons, and the amount of energy in each is called a quantum. there is much more energy in a quantum of x-rays than there is in a quantum of light or radio waves, and this explains why x-rays can damage the body, whereas radio waves have no effect on us.