In the paper with title “matter light duality and speed greater than light” we demonstrated that there exists a duality of matter and light. As per a of theorem in that paper, a photon can be represented by one particle going below the speed of light and another particle above the speed of light. In this article we conjecture that every photon is composed of an electron with speed less than light and an electron with speed greater than light (positron as per the matter-duality paper). We validate this prediction with the equations and further conjecture that all the frequency shifts of photons are due to Doppler Effect of the source. Then we take a case of zero energy vacuum where we show that the vacuum is composed of pair of electrons with first electron approaching speed of light from below c and the second electron from above c. We further demonstrate that the speed of an electron out of electron pair with respect to the other electron is infinite. We call them as "blind pairs" because one cannot see the other.