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Is the speed of light a consequence of an external force ?
Quote from: Michael Sally on 27/03/2021 12:19:45Is the speed of light a consequence of an external force ? No. The speed of light is a consequence of how Space and Time are interrelated to each other.
No. It is a consequence of Maxwell's equations.
It is a consequence of the geometry of spacetime,
To ask why it is that speed has no meaning.
Quote from: Janus on 27/03/2021 15:49:10Quote from: Michael Sally on 27/03/2021 12:19:45Is the speed of light a consequence of an external force ? No. The speed of light is a consequence of how Space and Time are interrelated to each other. What does that even mean ?
Quote from: Michael Sally on 27/03/2021 16:25:53Quote from: Janus on 27/03/2021 15:49:10Quote from: Michael Sally on 27/03/2021 12:19:45Is the speed of light a consequence of an external force ? No. The speed of light is a consequence of how Space and Time are interrelated to each other. What does that even mean ?Google time dilation and length contraction.
Quote from: jeffreyH on 27/03/2021 21:09:11Quote from: Michael Sally on 27/03/2021 16:25:53Quote from: Janus on 27/03/2021 15:49:10Quote from: Michael Sally on 27/03/2021 12:19:45Is the speed of light a consequence of an external force ? No. The speed of light is a consequence of how Space and Time are interrelated to each other. What does that even mean ?Google time dilation and length contraction.Time dilation and length contraction are physical events that have equations to determine the measure . Equations do not answer my question about the cause of the speed of light . If the engine of light was an external force , wouldn't that mean the speed of light was actually zero ?
Geometry is also a branch math and as somebody mentioned , Maxwell's equations are a consequence of the speed
Is it possible the universe is expanding because of an external force ?
Are you really going to suggest that the physics involved are not important ?
Time dilation and length contraction are physical events that have equations to determine the measure .
Equations do not answer my question about the cause of the speed of light .
If the engine of light was an external force , wouldn't that mean the speed of light was actually zero ?
Light doesn't have an engine. It does however propagate. The speed of that propagation is c in a vacuum. Since it is a constant in vacuum there is no force being applied to it. It is affected by gravity, which is a force, and can accelerate light.
Quote from: jeffreyH on 27/03/2021 21:28:55Light doesn't have an engine. It does however propagate. The speed of that propagation is c in a vacuum. Since it is a constant in vacuum there is no force being applied to it. It is affected by gravity, which is a force, and can accelerate light.If light does not have an engine , then the momentum must be a consequence of an external force . You mention gravity can affect light , is it possible that gravity is the engine of light ?
gravitational field. It does not require gravity to propagate.
requires no force to continue on its way, per Newton's first law (which is admittedly more applicable to the rock than to light).
Quote from: Michael Sally on 27/03/2021 12:19:45Is the speed of light a consequence of an external force ? I'll be honest I can't answer this without it being in new theories as at present know one knows.There are theories about light being pre programmed and relating to space time, whether light travels through space or is merely ejected when a wave strikes an object.