Sundials

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C PIckering

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Sundials
« on: December 29, 2015, 10:38:48 AM »
A question for all would sundials work on a globe, I no it could work at one side of the sun but after 6 months the shadows at 4 o'clock in the afternoon would they be on the  same side.In the same place.
Try and get to a consensus of opinion instead of throwing insults.  A question for the globalist is does the axis the earth rotates round face in the same direction ie away from the sun at the top or 6 months latter does it point into the sun at the top.

The debate should be fun. Good luck.

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getrealzommb

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Re: Sundials
« Reply #1 on: December 29, 2015, 11:07:07 AM »
I've never seen a dial for the sun... Can you turn the temperature up and down by using it? or the light output? You mention time - is this dial programmable like my boiler?
sound like a myth to me.

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ergovivo

Re: Sundials
« Reply #2 on: December 29, 2015, 11:27:57 AM »
Given that I have already proved that the earth is a globe(link in sig) you can just test to see if a sun dial works to answer the question.
But since that link will be invisible to most FEers (search google for morton's demon), Ill give a full answer
Sun dials aren't fully accurate due to the tilt if the earth, depending on the time of year you will have to add or subtract a few minutes from the sundial to get the true time, but since most sundials only show hours, and might no be perfectly aligned to begin with, the effect doesn't matter too much.

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Alpha2Omega

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Re: Sundials
« Reply #3 on: December 29, 2015, 12:45:40 PM »
A question for all would sundials work on a globe

Of course they do.

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I [know] it could work at one side of the sun but after 6 months the shadows at 4 o'clock in the afternoon would they be on the  same side.In the same place.

If by "same side", you mean would the shadow be east of the gnomon[nb]The thing that casts the shadow.[/nb] at 4 in the afternoon year round, sure. The end of the shadow will be further south in the summer (in the Northern Hemisphere) than it will in the winter, though.

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Try and get to a consensus of opinion instead of throwing insults. 

There has been a consensus of more than just opinions for centuries now. The Earth is known to be a globe and sundials are known to work with reasonably good accuracy[nb]Within about 1/4 hour or so.[/nb].

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A question for the globalist is does the axis the earth rotates round face in the same direction ie away from the sun at the top or 6 months latter does it point into the sun at the top.

The Earth's axis is a line that's tilted about 23° from perpendicular to the Ecliptic (the plane of the Earth's orbit about the Sun); it never points directly toward the Sun, but sometimes (i.e. at the Equinoxes) is perpendicular to the direction to the Sun. The Earth's axis does always point toward the same spot in space[nb]Neglecting precession, which is slow, taking about 26,000 years, and nutation, which is faster (the most significant component of nutation has a period of about 19 years), but is small.[/nb].

If I understand what you're saying, yes, the Earth's Northern Hemisphere ("the top") is tilted toward the sun for about half the year, and away from it the other half. This affects how far north or south the end of the shadow is at a given time of day, but only slightly affects how far east or west the shadow is.

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The debate should be fun. Good luck.

Maybe you can clarify what it is we're supposed to be debating about. Are you suggesting that a sundial couldn't work on a spherical earth? Please explain why you think that and we can discuss it.
 
"Everyone is entitled to his own opinion, but not to his own facts." - Daniel Patrick Moynihan

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robintex

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Re: Sundials
« Reply #4 on: December 29, 2015, 12:56:38 PM »
I've never seen a dial for the sun... Can you turn the temperature up and down by using it? or the light output? You mention time - is this dial programmable like my boiler?
sound like a myth to me.

This really should be ignored....but...Are you trying to be funny or just plain stupid  ::) ???

If you're trying to be funny, you've failed. If you're trying to be stupid, you've passed. ::)

Question: How would a sun dial work on a flat earth if the sun only signs down like a spot light ? Try this by shining a flashlight with a focused spotlight shaped beam down on a sun dial at night ?

Aha ! Since sundials work on a globe earth, count all the makers of sundials in the list of the conspirators ! Why would you say they don't work on the globe earth since it is obvious to the most casual observer that they do work on sunny days  ? Of course they don't work so good on cloudy days and  they are completely useless at night.
« Last Edit: December 29, 2015, 01:20:44 PM by Googleotomy »
Stick close , very close , to your P.C.and never go to sea
And you all may be Rulers of The Flat Earth Society

Look out your window , see what you shall see
And you all may be Rulers of The Flat Earth Society

Chorus:
Yes ! Never, never, never,  ever go to sea !

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ergovivo

Re: Sundials
« Reply #5 on: December 29, 2015, 01:00:39 PM »
It does look like something one of the idiots here would actually think, but in this case I think its a joke.

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rabinoz

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Re: Sundials
« Reply #6 on: December 29, 2015, 01:13:07 PM »
A question for all would sundials work on a globe, I no it could work at one side of the sun but after 6 months the shadows at 4 o'clock in the afternoon would they be on the  same side.In the same place.
Try and get to a consensus of opinion instead of throwing insults.  A question for the globalist is does the axis the earth rotates round face in the same direction ie away from the sun at the top or 6 months latter does it point into the sun at the top.

The debate should be fun. Good luck.
Bit of advice.  Don't start topics that just might prove the earth a sphere!
A normal "garden"gundial should be designed for the latitude where it will be used, so the gnomon is parallel with the earth's rotational axis - might be hard to find on a flat earth.

Quote from: http://www.yardenvy.com/
Most Armillary sundials have a fixed gnomon aligned with the Earth's rotational axis, as well as a shadow-receiving surface symmetrical to the axis.
  see http://www.yardenvy.com/diy/positioning-a-sundial.htm

Best of luck getting your sundial to work on the equator by in the same way it does in real life

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getrealzommb

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Re: Sundials
« Reply #7 on: December 29, 2015, 01:42:36 PM »
I've never seen a dial for the sun... Can you turn the temperature up and down by using it? or the light output? You mention time - is this dial programmable like my boiler?
sound like a myth to me.

This really should be ignored....but...Are you trying to be funny or just plain stupid  ::) ???

If you're trying to be funny, you've failed. If you're trying to be stupid, you've passed. ::)

Question: How would a sun dial work on a flat earth if the sun only signs down like a spot light ? Try this by shining a flashlight with a focused spotlight shaped beam down on a sun dial at night ?

Aha ! Since sundials work on a globe earth, count all the makers of sundials in the list of the conspirators ! Why would you say they don't work on the globe earth since it is obvious to the most casual observer that they do work on sunny days  ? Of course they don't work so good on cloudy days and  they are completely useless at night.

Sorry I was having a go at thinking like a flatty  and ended up with stupidity.  I guess, from your responce, that it works a charm.

Ask a stupid Question (OP) get a stupid answer.