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  #71  
Old 09-11-2017, 11:16 PM
PHC1 PHC1 is offline
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Originally Posted by GaryProtein View Post
This gif is way out of scale.

If you count the revolutions, the earth is rotating only 7 times per revolution of the moon. It should be 27 and the relative distances are way off.
Yes, in reality the Earth is spinning much faster proportionally to the Moon but the direction is at least correct. If the Earth is rotating at 15 degrees per hour and the Moon at 12.8 per Day relative to a fixed point in space like the Sun around which we are supposed to rotate, you can see that the arc the moon would have to make around the earth to cast a shadow that moves from West to East would be illogical since the Sun is so far away and Moon is so much closer to earth.
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  #72  
Old 09-11-2017, 11:27 PM
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So where did it come from?

The earth's orbit around the sum is about 93,000,000 in diameter or about 300,000,000 in circumference. The stars and galaxies are moving at for us earthlings, a very fast rate.

You should see Lawrence Krauss' and Neil Tyson's youtube videos and see their books.
We are supposed to be 93,000,000 miles from the Sun on an orbit of 600,000,000 miles around it while "cruising the universe" at 1,300,000 miles per hour and ever expanding but at these numbers, who cares...

So where did it come from? Parallel Dimensions, Multiverse theories of infinite possible Universes, Dark Matter, Black Holes.... "Fascinating stuff" said one bacterium to another in a petri-dish as the Professor hung up his lab coat and switched off the lights in the lab....

Last edited by PHC1; 09-11-2017 at 11:29 PM.
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  #73  
Old 09-12-2017, 12:15 AM
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I was thinking diameter, not radius.
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  #74  
Old 09-17-2017, 05:51 PM
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One Last Time

unless you want to continue

I think the biggest problem in comprehending the explanation for the eclipse traveling from west to east has been the scale of the objects involved. The diagrams posters here and on Youtube have all been way out of scale making the understanding difficult. No matter how capable we are in comprehending the vast distances and sizes, we are INCAPABLE of doing so. Because of this fact, I worked this out to have comprehendible sizes which will make for clear understanding of how the eclipse shadow travels from west to east across the earth surface.

SOLAR ECLIPSE EXPLANATION OF WEST TO EAST DIRECTION

The earth and moon both rotate in the same direction — counter clockwise — west to east.

The diameters are not really important because they are all small relative to distances. I just included them to give additional scale to the project. With the exception of the sun, the diameters of earth and moon are miniscule.

Let’s change the units from millions of miles to feet because the millions of miles is hard to comprehend even if you think you can imagine it. 93 million miles = 491 Billion feet.

Scale: 1 million miles equals 1 foot

Numbers have been rounded slightly for easy math. The results are still within several percent of exact measurements.

Easily comprehendible sizes:

Sun to earth — 93 million miles = 93 feet
Moon to earth — 240 thousand miles = ¼ of a million miles = ¼ foot = 3 inches

Sun diameter -- 864 thousand miles = 0.864 feet = 10.4 inches = size of a basketball
Earth diameter -- 8 thousand miles = 0.008 feet = 0.096 inches = essentially a pencil point
Moon diameter -- 2 thousand miles = 0.002 feet = 0.024 inches = essentially a pinpoint

Earth’s rotational speed on axis is about 1000 miles per hour at the equator; one rotation per day.
The circumference of the moon’s orbit around the earth is about 1,500,000 miles. 1,500,000 miles divided by one revolution around the earth every 27.4 days yields about 2000 miles per hour.

The moon is in a locked orbit around the earth so the shadow travels at the rate of the moon averaging about 2000 miles per hour. Every day we see the moon rise and set one time due to the rotational speed of the earth. The earth rotates about 27.4 times each time the moon revolves once.

The umbra (shadow of the total eclipse) actually travels at different speeds at different locations on the earth because the shadow is falling on the earth which is a sphere. The shadow speed is greatest at the beginning and end of the eclipse. (Shine a flashlight at a basketball slowly from side to side and you will see the light move across the surface fastest as the light glances by the sides of the ball and slowest as the light is directly hitting the ball.)

Speed of the eclipse:

-- very fast in the mid pacific ocean where eclipse begins
-- 2410mph in Western Oregon
-- 1747mph in central Nebraska
-- 1462mph in Western Kentucky -- greatest eclipse -- the midpoint
-- 1502mph near Charleston SC
-- very fast in the mid atlantic ocean where the eclipse ends

The moon revolves about 13 degrees of arc around the earth each day. (360 degrees/27.4 days) The total length of the time of the eclipse from when it starts in the mid pacific ocean until the eclipse ends in the mid atlantic ocean is about five hours. That means that during that period of time the moon subtends an arc of less than three degrees in the sky, which is not very much. (13 degrees/24 hours = 0.54 degrees per hour x 5 hours = 2.7 degrees of arc.)

See the link for the entire path of the eclipse from the mid pacific to the mid atlantic oceans.

https://eclipse.gsfc.nasa.gov/SEmono.../TSE2017-1.gif

Using a comprehendible scale model makes it much easier to see how the moon moves twice as fast as the earth causing the eclipse (the shadow) to extend from west to east. The moon does not have to subtend much of an arc, only 2.7 degrees, or travel far in the sky to do this.

I'm sorry, but after much thought, this is the best I can do to explain the path of the eclipse.
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  #75  
Old 09-20-2017, 07:22 PM
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Quote:
Originally Posted by GaryProtein View Post
One Last Time

unless you want to continue

I think the biggest problem in comprehending the explanation for the eclipse traveling from west to east has been the scale of the objects involved. The diagrams posters here and on Youtube have all been way out of scale making the understanding difficult. No matter how capable we are in comprehending the vast distances and sizes, we are INCAPABLE of doing so. Because of this fact, I worked this out to have comprehendible sizes which will make for clear understanding of how the eclipse shadow travels from west to east across the earth surface.

SOLAR ECLIPSE EXPLANATION OF WEST TO EAST DIRECTION

The earth and moon both rotate in the same direction — counter clockwise — west to east.

The diameters are not really important because they are all small relative to distances. I just included them to give additional scale to the project. With the exception of the sun, the diameters of earth and moon are miniscule.

Let’s change the units from millions of miles to feet because the millions of miles is hard to comprehend even if you think you can imagine it. 93 million miles = 491 Billion feet.

Scale: 1 million miles equals 1 foot

Numbers have been rounded slightly for easy math. The results are still within several percent of exact measurements.

Easily comprehendible sizes:

Sun to earth — 93 million miles = 93 feet
Moon to earth — 240 thousand miles = ¼ of a million miles = ¼ foot = 3 inches

Sun diameter -- 864 thousand miles = 0.864 feet = 10.4 inches = size of a basketball
Earth diameter -- 8 thousand miles = 0.008 feet = 0.096 inches = essentially a pencil point
Moon diameter -- 2 thousand miles = 0.002 feet = 0.024 inches = essentially a pinpoint

Earth’s rotational speed on axis is about 1000 miles per hour at the equator; one rotation per day.
The circumference of the moon’s orbit around the earth is about 1,500,000 miles. 1,500,000 miles divided by one revolution around the earth every 27.4 days yields about 2000 miles per hour.

The moon is in a locked orbit around the earth so the shadow travels at the rate of the moon averaging about 2000 miles per hour. Every day we see the moon rise and set one time due to the rotational speed of the earth. The earth rotates about 27.4 times each time the moon revolves once.

The umbra (shadow of the total eclipse) actually travels at different speeds at different locations on the earth because the shadow is falling on the earth which is a sphere. The shadow speed is greatest at the beginning and end of the eclipse. (Shine a flashlight at a basketball slowly from side to side and you will see the light move across the surface fastest as the light glances by the sides of the ball and slowest as the light is directly hitting the ball.)

Speed of the eclipse:

-- very fast in the mid pacific ocean where eclipse begins
-- 2410mph in Western Oregon
-- 1747mph in central Nebraska
-- 1462mph in Western Kentucky -- greatest eclipse -- the midpoint
-- 1502mph near Charleston SC
-- very fast in the mid atlantic ocean where the eclipse ends

The moon revolves about 13 degrees of arc around the earth each day. (360 degrees/27.4 days) The total length of the time of the eclipse from when it starts in the mid pacific ocean until the eclipse ends in the mid atlantic ocean is about five hours. That means that during that period of time the moon subtends an arc of less than three degrees in the sky, which is not very much. (13 degrees/24 hours = 0.54 degrees per hour x 5 hours = 2.7 degrees of arc.)

See the link for the entire path of the eclipse from the mid pacific to the mid atlantic oceans.

https://eclipse.gsfc.nasa.gov/SEmono.../TSE2017-1.gif

Using a comprehendible scale model makes it much easier to see how the moon moves twice as fast as the earth causing the eclipse (the shadow) to extend from west to east. The moon does not have to subtend much of an arc, only 2.7 degrees, or travel far in the sky to do this.

I'm sorry, but after much thought, this is the best I can do to explain the path of the eclipse.
After giving this some thought and pondering the subject, I do recall watching photos of the eclipse taking place including the pics my wife took and it did appear the sun was eclipsed by the moon from the west to east. It would make sense that the shadow would also move west to east. Phew, so much better to think that everything is exactly the way we are told than that the sun went in for a bulb change.
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  #76  
Old 09-20-2017, 09:17 PM
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Thank you!
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  #77  
Old 10-14-2017, 07:49 PM
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Besides myself, does anyone else find this Antarctic Wilkins shelf collapse a bit weird? Nature doesn’t do symmetry and 90 deg angles... Those walls are almost 300 ft tall by the way. If not nature then who, how or why?

https://youtu.be/poKX6OnehTc
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  #78  
Old 10-14-2017, 07:57 PM
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Originally Posted by PHC1 View Post
Besides myself, does anyone else find this Antarctic Wilkins shelf collapse a bit weird? Nature doesn’t do symmetry and 90 deg angles... Those walls are almost 300 ft tall by the way. If not nature then who, how or why?

https://youtu.be/poKX6OnehTc
Serge.......Laser experiments from space?
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  #79  
Old 10-14-2017, 08:20 PM
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Serge.......Laser experiments from space?
Perhaps but we also should consider exploring that question not from above but from below. Considering the arctic shelves are 3 miles deep and there are 9000 ft mountains and freshwater lakes under them... it all begs the question if we really know what’s under there.
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