A spacetime based model of an electric field and a photon is presented. The model assumes that 4 dimensional spacetime has vacuum fluctuations at all frequencies up to Planck frequency. Gravitational wave theory is used to give insights into electromagnetic (EM) radiation. From gravitational wave equations it is possible to derive the impedance of spacetime and quantify energy propagating in the medium of spacetime. EM radiation is shown to experience the same impedance as gravitational waves. This implies that photons also are waves in the medium of spacetime. The distortion of spacetime produced by a photon is calculated. Experiments are suggested including an experiment that may improve the sensitivity of experiments attempting to detect gravitational waves.