The equation is E = h*c/L where E is the energy, h is planck\'s constant, c is the speed oflight, and L is the wavelength. b) microwave < IR< visible < UV < X-ray Solution The equation is E = h*c/L where E is the energy, h is planck\'s constant, c is the speed oflight, and L is the wavelength. b) microwave < IR< visible < UV < X-ray.