Message from @jeremy

Discord ID: 633499667908526090


2019-10-15 02:55:38 UTC  

Then calc its actual size

2019-10-15 02:55:49 UTC  

This device

2019-10-15 02:55:50 UTC  

@RogueReflector as I mentioned before, there are two sources of redshift: The most obvious source of redshift is doppler (including time dilation due to special relativity); the less obvious source of redshift is gravitational, which depends on gravitational potential (confirmed through the Harvard Tower Experiment, and similarly repeated experiments).

2019-10-15 02:55:54 UTC  

Is a sextant ?

2019-10-15 02:56:03 UTC  

@jeremy nah a theodolite is better

2019-10-15 02:56:47 UTC  

Hmmm

2019-10-15 02:57:00 UTC  

For the Hubble Law (and the hubble constant) to be valid, gravitational redshift needs to be decoupled from doppler (redshift due to motion)

2019-10-15 02:57:46 UTC  

@SunRazor I see. I don't knowuch about that

2019-10-15 02:58:22 UTC  

Ok

2019-10-15 02:58:43 UTC  

So u got ur sextant or theodolite u do this with the moon and the sun

2019-10-15 02:58:46 UTC  

@jeremy simple geometry

2019-10-15 02:59:21 UTC  

U come up with some valid numbers ?

2019-10-15 02:59:28 UTC  

@jeremy for the sun it doesn't work bc the angles change is too small

2019-10-15 02:59:43 UTC  

If you could quantify how much of the redshift is due to motion (expansion of the universe) and how much redshift is due to a difference in gravitational potential, on one end of a spectrum the galaxies far away could be still and just at a lower gravitational potential than we are today, and on the other end the galaxies are at equal gravitational potential as we are today and are moving away from us. The hubble law assumes that the redshift is due entirely to the doppler effect caused by the expansion of the universe.

2019-10-15 02:59:53 UTC  

For the moon yes it works. We can measure it's parallax from diff places on the earth

2019-10-15 03:00:06 UTC  

Or it could be because we never see the actual sun we see the apparent position of the sun no ?

2019-10-15 03:00:29 UTC  

Dunno what that would do, no matter what we see the apparent position of every object

2019-10-15 03:00:32 UTC  

So ok u got ur pointer u check ur angles to the moon what number u get

2019-10-15 03:00:35 UTC  

That's just a give

2019-10-15 03:00:45 UTC  

Moons distance

2019-10-15 03:01:30 UTC  

Are they using math with s sphere or flat earth when they do that

2019-10-15 03:01:51 UTC  

The measured distance between the locations

2019-10-15 03:01:56 UTC  

That's what's used

2019-10-15 03:02:24 UTC  

The curve doesn’t come into play in the math ok

2019-10-15 03:03:09 UTC  

Wait a sec

2019-10-15 03:03:23 UTC  

The sun and moon are same apparent size

2019-10-15 03:04:11 UTC  

I used to watch Bill Nye every day as a teenager. Looking at him now though, sometimes I wish I never wasted my time.

2019-10-15 03:04:41 UTC  

We need to back this up a little rogue please

2019-10-15 03:04:52 UTC  

Sun and moon are same apparent size

2019-10-15 03:06:19 UTC  

Are they?

2019-10-15 03:06:32 UTC  

Because we have total solar eclipse and partial solar eclipses

2019-10-15 03:06:34 UTC  

@jeremy Some people would argue that the sun and moon being the same size is proof that God intelligently made the heavens and the earth. Some people would argue that it's evidence that an exceedingly more superior alien race artificially placed the earth and the moon into their orbit positions.

2019-10-15 03:06:41 UTC  

Seems the moon changes size a bit

2019-10-15 03:06:52 UTC  

Turns out it changes by 14%

2019-10-15 03:07:02 UTC  

Are u saying the sun and moon aren’t the same apparent size

2019-10-15 03:07:11 UTC  

Close to the same size

2019-10-15 03:07:16 UTC  

It not exactly

2019-10-15 03:07:37 UTC  

Within about 7%

2019-10-15 03:07:38 UTC  

I think that's because the moons orbit is elliptical right?

2019-10-15 03:07:42 UTC  

Yep

2019-10-15 03:07:49 UTC  

sometimes it's farther and sometimes it's closer