Matter and Time. Abstract: Space is from two kinds of energy in standing waves; (1) energy with mass which is finite energy and (2) energy without mass which is infinite energy. Given light speed is equal to frequency times wavelength C = f λthen photon half waves are twice light speed on contraction before reversal expansion at light speed. Light speed is a constant relative to mass in Special Relativity but photon half waves are twice light speed on contraction from the fundamental frequency. Infinity is half wave photon energy on contraction at twice light speed without mass-time. Standing half wave photons are oscillating as medium (ether) at twice light speed where energy is infinite; consequently, energy on reversal expansion creates mass and time in the electromagnetic field.