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A Qualitative Model for Virtual Photons

(1) Every virtual photon has momentum.

(2) Every charged particle constantly emits virtual photons. Each photon specifies the emitting particle's charge of + e. 

(3) When a photon is absorbed, one is immediately emitted, specifying the emitting particle's electric charge, and in the opposite direction of the absorbed photon's momentum.   

(4) Whereas there is only one sign of gravitons, there are two signs of virtual photons. Positive charges emit positive virtual photons, and negative charges emit negative virtual photons.

(5a) Case 1. A positive charge absorbs a positive photon. The charge immediately emits a positive photon back in the direction from which the absorbed photon came. The charge receives an impulse in the same direction as the absorbed photon's momentum.

(5b) Case 2. A negative charge absorbs a negative photon. The charge immediately emits a negative photon back in the direction from which the absorbed photon came. The charge receives an impulse in the same direction as the absorbed photon's momentum.

(5c) Case 3. A positive charge absorbs a negative photon. The charge immediately emits a positive photon back in the direction from which the absorbed negative photon came. The charge receives an impulse in the opposite direction as the absorbed photon's momentum.

(5d) Case 4. A negative charge absorbs a positive photon. The charge immediately emits a negative photon back in the direction from which the absorbed positive photon came. The charge receives an impulse in the opposite direction as the absorbed photon's momentum.  

(6) Virtual photons propagate at the speed of light.

(7) The mass of every virtual photon is real.  

(8) Given a macroscopic spherical charge, the photons are collectively emitted in outwardly expanding spheres. The flux of photons is thus spherical, and the flux per unit time falls off as 1/R2, where R is the distance from the samplesí center.