Light, composed of photons, is massless.
So something is massless, what would be the propellant for it to move so quickly forward?
also, how is light emitted? are the photons created before they are emitted or are they there beforehand?
if they are there beforehand, then, using some rudimentary physics,
force=mass x acceleration,
then you could not apply a force on the photon because it is massless so the forrce always = 0.
but if you changed the equation into
acceleration=force/mass, then it would become undefined because you divide by zero.. strange
if they were created as they were emitted, it would make more sense because they are massless, so it does not count as 'energy' so could be created or destroyed, but then how is it 'created or destroyed'?
Also, how can light follow the wave-particle duality if it is massless and being a particle requires mass?
thanks