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If the beam of light from the rocket, is turned off when it reaches point B an observer at point A will instantly see the light go off eight minutes after the rocket departs. The clock aboard the ship if mechanical, and shielded by multiple walls of steel, will show 8 minutes have passed. Sincerely, William McCormick
Quote from: Thebox on 13/09/2016 00:40:11... Now underwater look with your eyes , can you see water that is a few feet away ? Unlike air I have now give you a visual. Just like you can see the water that is a few feet away, you can see the light passing through that water that is a few feet away .No.If the water is perfectly clear, I won't be seeing it, I'll be seeing light that has passed through it; so (for example) I'd be seeing light that left the other side of the swimming pool and travels to my eye.If the water isn't perfectly clear, e.g. it has some dirt swirling in it, I'll be seeing light reflected (absorbed/re-emitted) by that dirt. Similar to being able to see a laser beam in a smokey room.
... Now underwater look with your eyes , can you see water that is a few feet away ? Unlike air I have now give you a visual. Just like you can see the water that is a few feet away, you can see the light passing through that water that is a few feet away .
Quote from: Thebox on 13/09/2016 01:06:50Quote from: jeffreyH on 13/09/2016 01:04:58I'm not interested in discussing science with you anymore.well Jeff, perhaps you do not want to understand or even try to understand. You forget I know your informationAnd by that you mean what exactly?
Quote from: jeffreyH on 13/09/2016 01:04:58I'm not interested in discussing science with you anymore.well Jeff, perhaps you do not want to understand or even try to understand. You forget I know your information
I'm not interested in discussing science with you anymore.
Quote from: William McC on 13/09/2016 03:53:06If the beam of light from the rocket, is turned off when it reaches point B an observer at point A will instantly see the light go off eight minutes after the rocket departs. The clock aboard the ship if mechanical, and shielded by multiple walls of steel, will show 8 minutes have passed. Sincerely, William McCormickyes , except there is no actual beam ,
it does not matter the water is clear you can still see the water , look from above ,out of the water if needed
Quote from: Thebox on 13/09/2016 04:01:32Quote from: William McC on 13/09/2016 03:53:06If the beam of light from the rocket, is turned off when it reaches point B an observer at point A will instantly see the light go off eight minutes after the rocket departs. The clock aboard the ship if mechanical, and shielded by multiple walls of steel, will show 8 minutes have passed. Sincerely, William McCormickyes , except there is no actual beam ,Light is a slow down of high velocity ambient radiation. The source no matter the velocity of the source creating light, will create light. The rays that create light are instantaneous. The development of the actual light beam takes some time. The light beam because it is initiated upon take off from point A will remain on and visible at all times to point A. The velocity of the craft is not a factor at all. Sincerely, William McCormick
Quote from: Thebox on 13/09/2016 04:03:01it does not matter the water is clear you can still see the water , look from above ,out of the water if neededThat's because water isn't actually perfectly clear (as you would say - it's not "gin clear"). What you are seeing, is light affected by that water, coming to your eyes.How about telling me how time-of-flight laser range finders work.Is it mere coincidence that they give correct answers, while operating by some principal that you would deny?
A laser is a beam passing through the constant.
Quote from: Thebox on 13/09/2016 07:29:59A laser is a beam passing through the constant.My hovercraft is full of eels.