Hi again, I've read [ source: http://www.badastronomy.com/mad/1997/photon.html ] that a typical quasar may produce less than 10 total photons per second detected on a Hubble telescope camera. If we theoretically put it to the extreme and make it be 1 photon every hour, and nothing else but that quasar exists in our universe that emits electromagnetic waves / photons, my question is: do we get any electromagnetic perturbation inbetween those "1 each hour" photons? Or an electromagnetic field exists only by its photons, thus is not continue? But, aren't static electric fields continue (e.g. they exist around electrons and permeate space, they aren't the electron in itself)? Thanks, N.R. _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist