DBT
Contributor
Correct.These are Lessans' own words. He is clearly saying that he agrees that "light travels approximately 186,000 miles a second", though he disputes all other claims from "our scientists" about light and vision."Our scientists, becoming enthralled over the discovery that light travels approximately 186,000 miles a second ...
Once again, certain facts have been confused, and all the reasoning except for light traveling at a high rate of speed is completely fallacious."
The Sun does cast a shadow but not necessarily after 8.5 minutes.We have demonstrated by a simple test that the light from the Sun casts a shadow that points directly towards where the Sun was when that light left it. Lessans agrees that this light arrives here 8.5 minutes after it left the Sun, crossing 93 million miles at 186,000 miles a second.
What if the Earth's rotation in that 2 degrees has nothing to do with the 8.5 minutes the light departed from the Sun? Is it not possible that this is a conclusion drawn that earth's movement by 2 degrees and seeing the Sun are not due to the departure of light from the Sun at all? What if the Earth moved only one degree? Would it still take 8.5 minutes?But we know that the Sun is now actually two degrees away from that spot - because the Earth has rotated two degrees in the 8.5 minutes since that light departed from the Sun.
4 minutes
how long does it take to see a shadow on a sundial if the Sun moves one degree from the previous degree?
The time it takes to see a shadow on a sundial as the Sun moves one degree from the previous degree is 4 minutes. This is because the Sun takes 4 minutes to cover one degree of the sky. The sundial's shadow will move across the hour lines at a consistent rate, allowing users to estimate the time of day based on the position of the shadow.
Border Sundials
We could see the sun in real time and the Sun still be seen two degrees away from that spot as the Earth rotates without it being the result of an 8.5 minute delay.IF we see the Sun in "real time", then it will appear two degrees away from the direction the shadow points.
Why do you keep saying this when I told you this is not what Lessans said?Does it? @peacegirl, did you check for yourself? I don't want you to take my word for it.
If it does - if we are seeing the shadow in delayed time (as Lessans says we will); And we are seeing the Sun in real time (as Lessans says we do), then both of his claims are consistent with reality.
That wasn't his claim, so you are being disingenuous to keep saying it was.But if it doesn't - If the Sun appears exactly in line with the shadow - then at least one of his claims is wrong.
The light radiated from the sun 8.5 minutes ago is casting shadows here and now.