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View Full Version : I asked this question a couple of years ago.



l921428x
01-02-2018, 05:47 PM
Has the tilt of the Earth changed? Now I know it has, I can see it.
The Sun is decidedly setting at a lower angle than I have ever seen it.
:dizzy:

imanaknut
01-02-2018, 06:18 PM
Been my feeling for the last couple of years too. Seems the sun is higher in the summer and lower in the winter. The Earth has a natural wobble but supposedly over millions of years to move just a couple minutes of arc.

Considering scientists have said some of the latest earthquakes changed the rotational speed of the earth, I can't see why the rotational axis versus the sun hasn't changed as well.

N/A
01-02-2018, 06:26 PM
Aw, you're just jumping from one parallel universe to another and back again. ��

l921428x
01-02-2018, 07:30 PM
Well that could be it but then you have to wonder if those little marks you make (stonehinged)
transfer and are correct on "the other side."

N/A
01-02-2018, 08:15 PM
Lol....but it's a parallel universe, not a clone universe. If the Earth has a slightly different tilt in a parallel universe, then it may or may not have this little marks exactly the same.

alismith
01-02-2018, 10:10 PM
The slow change in the Earth's axis is called precession. The axis is pointing towards Polaris right now, but in 13,000 years it will be pointing towards Vega, then 13,000 years after that, it will be pointing back to Polaris. So, Earth's complete precession cycle is 26,000 years.

However, the rotation of the earth is what causes sunrise and sunset, and that only changes a few nano-seconds every day. Even in 100 years, the Earth has slowed down about 200-300 nanoseconds.

Since the Devonian Time Period, the Earth's daylight hours have increased from 22.6 hrs. to 24 hrs. today. That's an increase of 1.4 hours in a time period of 252,000,000 years.

I doubt, during the lifetime of a human, anyone would notice any change in either the precession, or daylight hours.

So, if anyone senses a difference in the length of a day, there has to be another reason they're seeing it. It's not scientific.

l921428x
01-02-2018, 10:38 PM
So what you are saying is what I NOTICED, LOOKED AT AND OBSERVED IS NOT HAPPENING. K
I planted a Silver Maple 22 years ago. I have watched it grow over that time and doing this I have basically
stood in the same spot. And the Sun is setting NO WHERE near where it was a couple of years ago.

I guess I pay too much attention to things...

alismith
01-02-2018, 10:54 PM
So what you are saying is what I NOTICED, LOOKED AT AND OBSERVED IS NOT HAPPENING. K
I planted a Silver Maple 22 years ago. I have watched it grow over that time and doing this I have basically
stood in the same spot. And the Sun is setting NO WHERE near where it was a couple of years ago.

I guess I pay too much attention to things...

If you can notice a slowdown in Earth's rotation, of about 45-50 nono-seconds, you've got far better eyes than I do. I'll have to start paying closer attention.

imanaknut
01-02-2018, 11:29 PM
If you can notice a slowdown in Earth's rotation, of about 45-50 nono-seconds, you've got far better eyes than I do. I'll have to start paying closer attention.
He is not talking about rotational time, he is talking about the axis tilt. Rotation would be the same whether tilted zero degrees to the solar plane or 90 degrees. The tilt affects the location of the tropics of cancer and capricorn. Current tilt is 23.5 degrees

alismith
01-03-2018, 12:06 AM
He is not talking about rotational time, he is talking about the axis tilt. Rotation would be the same whether tilted zero degrees to the solar plane or 90 degrees. The tilt affects the location of the tropics of cancer and capricorn. Current tilt is 23.5 degrees

The axial tilt shouldn't change in relation to the plane of Earth's orbit. The only difference is going to be which star the axis is pointing to.

10,000 years from now, the tilt is still going to be 23.5 degrees from the perpendicular to the plane of Earth's orbit. The tilt can't change because there is no gravity "underneath" the earth to cause the axis to "fall" over(unlike a spinning top on Earth, which has it's axial tilt affected by Earth's gravity and friction with the surface the axis is touching).

The sun's positional change, on Earth, is more related to seasonal changes than anything else. For all intents and purposes, a slowing down of Earth's rotational speed, during a person's lifetime, is imperceptible, as is its axial alignment with the stars.

Both are imperceptible without exact astronomical measurements.

l921428x
01-03-2018, 07:06 AM
So the trees moved? K, I get it.

Full Otto
01-03-2018, 10:32 AM
I planted a Silver Maple 22 years ago. I have watched it grow over that time and doing this I have basically
stood in the same spot.

You need to get out more

l921428x
01-03-2018, 02:05 PM
WHAT? The 25 foot tree is out. Where does the sun rise at your home, where does it set?
I know how many Chipmunks and Squirrels live in the back, have planted most of the trees
back there and feed the birds. There are days when I spend hours out.

You be joshin right?

NAPOTS
01-03-2018, 03:06 PM
The only logical explanation is that the illuminati/lizard people dug it up and moved it while you were sleeping

Full Otto
01-03-2018, 03:25 PM
WHAT? The 25 foot tree is out. Where does the sun rise at your home, where does it set?
I know how many Chipmunks and Squirrels live in the back, have planted most of the trees
back there and feed the birds. There are days when I spend hours out.

You be joshin right?

Yeah I'm joshin
I do have a large maple that I do the same thing with but from inside the house
I haven't really tried what you're talking about just kind of generalize when shortest day comes

l921428x
01-03-2018, 03:57 PM
My house sits on a direct magnetic N alignment meaning the Sun does set almost due W
over the last few years but now that alignment is almost a WSW angle. Well I guess it could be
the Sugar Plum Fairies and nano seconds working together.

On my side porch the Sun will move close to 6' with the transition from winter to summer.
Sometimes there is not a whole lot to do here and I have to occupy myself with something.

Trump is coming to Atlanta for the National Championship game...Breaking news.

alismith
01-03-2018, 04:39 PM
Since we've been gaining about 2-3 minutes of day light since Dec. 22. From then to now, that's about 30 minutes more daylight. Could the changing daylight times be what you're observing? If you're observing about the same time each day, then the sun would appear in a slightly different position from each day.

p.s. You've got to watch those damned fairies. When they start playing with those nano-seconds, things start going nuts.

l921428x
01-03-2018, 05:49 PM
Yeah I think I noticed, But no I understand the changing day light, that is what brought my attention
to this it was getting darker sooner by almost 15 minutes.

Full Otto
01-03-2018, 07:25 PM
the Sun does set almost due W
over the last few years but now that alignment is almost a WSW angle. Well I guess it could be
the Sugar Plum Fairies and nano seconds working together.

or maybe

http://i.imgur.com/i3hinerl.jpg (https://imgur.com/i3hiner)

alismith
01-03-2018, 08:31 PM
or maybe

http://i.imgur.com/i3hinerl.jpg (https://imgur.com/i3hiner)

Ahhh, mystery solved. ;)

Krupski
01-29-2018, 05:36 PM
The slow change in the Earth's axis is called precession. The axis is pointing towards Polaris right now, but in 13,000 years it will be pointing towards Vega, then 13,000 years after that, it will be pointing back to Polaris. So, Earth's complete precession cycle is 26,000 years.

However, the rotation of the earth is what causes sunrise and sunset, and that only changes a few nano-seconds every day. Even in 100 years, the Earth has slowed down about 200-300 nanoseconds.

Since the Devonian Time Period, the Earth's daylight hours have increased from 22.6 hrs. to 24 hrs. today. That's an increase of 1.4 hours in a time period of 252,000,000 years.

I doubt, during the lifetime of a human, anyone would notice any change in either the precession, or daylight hours.

So, if anyone senses a difference in the length of a day, there has to be another reason they're seeing it. It's not scientific.


Most people don't know this. I'm impressed.

Our next "North Star" will be Gamma Cephei (A.K.A. Alrai) and after that it will be Alpha Lyrae (Vega - pronounced VEE-GAH, not "VAY-GAH"), then finally back to Alpha Ursae Minoris (Polaris).

Also, since the earth rotates faster than the moon orbits it, it adds orbital energy to the moon via tidal coupling, causing it to slowly move away from the earth (and also slows down the rotation of the earth).

In eons to come, the moon will have moved so far out, and the earth slowed so much, that the moon will be in a geosynchronous orbit and appear in one spot in the sky (albeit tracing out a small figure 8 pattern).

Our dust will be dust by then.......

alismith
01-29-2018, 07:09 PM
Most people don't know this. I'm impressed.

Our next "North Star" will be Gamma Cephei (A.K.A. Alrai) and after that it will be Alpha Lyrae (Vega - pronounced VEE-GAH, not "VAY-GAH"), then finally back to Alpha Ursae Minoris (Polaris).

Also, since the earth rotates faster than the moon orbits it, it adds orbital energy to the moon via tidal coupling, causing it to slowly move away from the earth (and also slows down the rotation of the earth).

In eons to come, the moon will have moved so far out, and the earth slowed so much, that the moon will be in a geosynchronous orbit and appear in one spot in the sky (albeit tracing out a small figure 8 pattern).

Our dust will be dust by then.......

I learned all this when I was teaching astronomy to 8th graders. One thing I found out, in order to teach something, you have to be more knowledgeable than those you teach.

In some of our studies, we were doing college level astronomy, which wasn't as hard as it might sound.

So, I guess I'm smarter than the ordinary 8th grader. ;)

308
01-30-2018, 08:08 PM
Has the tilt of the Earth changed? Now I know it has, I can see it.
The Sun is decidedly setting at a lower angle than I have ever seen it.
:dizzy:

Read the Book of Enoch where it is claimed the sun enters and exits through various gates in the firmament
After that we can discuss what is really going on :crazy:

Krupski
01-31-2018, 01:11 AM
Read the Book of Enoch where it is claimed the sun enters and exits through various gates in the firmament
After that we can discuss what is really going on :crazy:


Ever watch a top spinning on the table and it begins to wobble (that is, if you attached a laser pointer to the top, it would draw a circle on the ceiling)?

Or those 100 foot long cables in museums with a heavy ball on the end that swings in a circle - seemingly all by itself?

That's called "gyroscopic precession" and it's caused by the top moving through inertial space (stationary relative to the universe) in two different directions... one being as the earth rotates on it's axis and the other as the earth orbits the sun. Actually, there are several other factors, like the tidal pull of the moon and the whole solar system orbiting the center of our galaxy, but those forces are so tiny they can be ignored.

The easiest effect to mentally picture is to sit on an office chair holding a bicycle wheel by the axle while it spins. If you try to tilt the axle, the wheel will gyroscopically move 90 degrees perpendicular to the motion you are trying to make.

Now, try to hold the wheel steady and slowly rotate yourself on the office chair (analogous to the earth's rotation relative to stationary inertial space).

Although the axle is not moving relative to YOU, it is moving relative to stationary inertial space (the room around you). As a result, the wheel will precess perpendicular to the motion applied to it. Making one complete circle will cause the wheel to make one complete "wobble" (or maybe two... not exactly sure) :)

Also, the science of rotating cylinders (and, by extension, spheres) is a lot more complex than it would seem. There are certain diameter to length to rotation rate ratios that are inherently stable and others that will take off and wobble around their axis of rotation without ANY disturbance applied to it. Think of a 5,56 bullet shot out of a 1:12 barrel vs one shot out of a 1:8 barrel, for example.

Thankfully, we HAVE the moon, which keeps us from constantly changing inclination angles (like north is north today and 10 years later it could be that north points at the sun... or anything random in between).

Our climate would be a LOT different....

l921428x
01-31-2018, 07:27 AM
Yep and I am watching the lunar eclipse live from California. About over.

l921428x
01-31-2018, 07:32 AM
Read the Book of Enoch where it is claimed the sun enters and exits through various gates in the firmament
After that we can discuss what is really going on :crazy:

I do not know if I would understand anymore after reading it. Unlike my thoughts sometimes
I am a pretty simple guy. That is why I have a hard time with people telling me I am not seeing what I see.

308
01-31-2018, 10:17 AM
I do not know if I would understand anymore after reading it. Unlike my thoughts sometimes
I am a pretty simple guy. That is why I have a hard time with people telling me I am not seeing what I see.

I have to say I have noticed something odd this year that I had not noticed before.

When I look out the window of my house I can see Mt. Hood. In full summer the sun rises way to the north of the peak as I look eastward at the mountain. In full winter, it rises way to the south of the peak. I have always found this interesting there is such an enormous difference.

Now to the odd part....and it has to do with the sun setting position relative to my home. Many years ago I planted a group of three quaking aspens in the backyard to block the sun during late afternoon in full summer when the sun sets more northern than southern. So the weird part is a few weeks ago in full winter, the sunset was more farther north than it has been in full summer. I say this because when it was setting, my trees did not block it. It was one of those WTF moments and I thought, how is this possibly happening?

Anyway...just an observation on my part.

alismith
01-31-2018, 12:44 PM
I have to say I have noticed something odd this year that I had not noticed before.

When I look out the window of my house I can see Mt. Hood. In full summer the sun rises way to the north of the peak as I look eastward at the mountain. In full winter, it rises way to the south of the peak. I have always found this interesting there is such an enormous difference.

Now to the odd part....and it has to do with the sun setting position relative to my home. Many years ago I planted a group of three quaking aspens in the backyard to block the sun during late afternoon in full summer when the sun sets more northern than southern. So the weird part is a few weeks ago in full winter, the sunset was more farther north than it has been in full summer. I say this because when it was setting, my trees did not block it. It was one of those WTF moments and I thought, how is this possibly happening?

Anyway...just an observation on my part.

The main problem is you didn't plant enough trees....

l921428x
01-31-2018, 01:07 PM
No the problem is we cannot keep those rascals trees from moving around. I have to also
wonder what it would be to look out my window and see a volcano. I think I will be happy
with oaks, maples, pines and poplars.

Think I will put up a fence to keep them from running.

alismith
01-31-2018, 02:17 PM
No the problem is we cannot keep those rascals trees from moving around. I have to also
wonder what it would be to look out my window and see a volcano. I think I will be happy
with oaks, maples, pines and poplars.

Think I will put up a fence to keep them from running.

I always wondered why people put up fences. I thought it was to keep their pets, or kids, in. Now, I know it's to keep those pesky trees from running amok in the neighborhood.

I may have to do something similar here.....

l921428x
01-31-2018, 02:27 PM
Yeah it could become a problem when you have a 28" diameter gutter clogger show up for a year.

alismith
01-31-2018, 02:58 PM
The worst tree for roaming is the Sweet Gum tree. Everywhere it's gone, it leaves behind gumballs and those things hurt when you step on them barefooted.

Sometimes, when I go out in the mornings, and the whole yard is littered with gumballs. Those trees really get around when it gets dark.

I'm guessing they're mostly nocturnal roamers.

l921428x
02-01-2018, 05:33 AM
Those are at the top of the list for things that are green I will track. But the balls make it easy. I do not fool with those at all.
Those get nuked from orbit