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Author Topic: Test GE and FE  (Read 7306 times)

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Offline Stanley N

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Test GE and FE
« on: December 18, 2021, 01:50:29 PM »
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    • I'm proposing to do the Eratosthenes observations from several latitudes at the same time.

    Basically, this:

    I would like to try this on Dec 21, solstice, at solar noon. (Solar noon isn't 12:00 with or without DST.)

    https://gml.noaa.gov/grad/solcalc/

    If you're willing to try, what you need to do is take a measurement of
    - the angle the sun makes with "level"
    - or, equivalently the angle a shadow makes

    If you choose to take the sun angle, you should use a theodolite; there are theodolite apps, though I haven't looked at free theodolite apps yet

    If you choose to take a shadow measurement, please verify that the item is vertical (with a plumb line or household leve) and report both its height and the shadow length.

    Post in this thread with that information, and the latitude at which you took the observation.
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    Offline bodeens

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    Re: Test GE and FE
    « Reply #1 on: December 18, 2021, 02:09:24 PM »
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    • How about on a day everyone has off? The 21st isn't on a weekend unfortunately.
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    Offline Stanley N

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    Re: Test GE and FE
    « Reply #2 on: December 18, 2021, 03:40:04 PM »
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    • Sunday after Christmas?
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    Offline Marion

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    Re: Test GE and FE
    « Reply #3 on: December 18, 2021, 03:42:46 PM »
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    • Good idea. This even could be done repeatedly. The guy in the video complains about few flat earther participation, but CI flat earthers say they're truth seekers.

    Sure better than supporting jootoob with lots of clicks and hours of view.
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    Offline bodeens

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    Re: Test GE and FE
    « Reply #4 on: December 18, 2021, 03:44:16 PM »
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    • I'm up for it. Sunday after Christmas!
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    Offline Marion

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    Re: Test GE and FE
    « Reply #5 on: December 18, 2021, 03:49:45 PM »
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    • Stanley, what do you think of using a "swiss knife" app, which has a mechanic's level? Then use the smart phone to measure the angle of a broomstick, or aluminum profile?
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    Offline Anne Evergreen

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    Re: Test GE and FE
    « Reply #6 on: December 18, 2021, 04:08:34 PM »
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    • I can't remember if I saw this experiment done by watching a link on this website as a lurker or not? It was about a guy that did it in Regina, Saskatchewan. He rode his bike a certain distance while his buddy measured also at the other end. He concluded the earth is curved.
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    Offline Anne Evergreen

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    Re: Test GE and FE
    « Reply #7 on: December 18, 2021, 04:38:39 PM »
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    • Quote from: Anne Evergreen on December 18, 2021, 04:08:34 PM
    I can't remember if I saw this experiment done by watching a link on this website as a lurker or not? It was about a guy that did it in Regina, Saskatchewan. He rode his bike a certain distance while his buddy measured also at the other end. He concluded the earth is curved.
    Why would I get 2 thumbs down for simply reporting what this fellow concluded? I was only trying to be helpful by adding in a link? :confused: Geesh, if you give thumbs down for things like this, I can't imagine what you would use for things that are actually offensive. :( 
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    Offline Stanley N

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    Re: Test GE and FE
    « Reply #8 on: December 18, 2021, 04:40:49 PM »
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    • Quote from: Anne Evergreen on December 18, 2021, 04:08:34 PM
    I can't remember if I saw this experiment done by watching a link on this website as a lurker or not? It was about a guy that did it in Regina, Saskatchewan. He rode his bike a certain distance while his buddy measured also at the other end. He concluded the earth is curved.

    You're thinking of this: 

    He took it for granted the sun was far away and took two observations.

    What I'm suggesting is take a lot of observations and (more or less) triangulate where the sun is. That won't work on at least one of the models.

    Quote from: Anne Evergreen on December 18, 2021, 04:38:39 PM
    Why would I get 2 thumbs down for simply reporting what this fellow concluded? I was only trying to be helpful by adding in a link? :confused:

    Welcome to CI :)

    You seem genuine. Consider the downvotes as badges of honor.
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    Offline Anne Evergreen

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    Re: Test GE and FE
    « Reply #9 on: December 18, 2021, 04:56:39 PM »
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    • Thanks for the welcome. :-)
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    Offline Stanley N

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    Re: Test GE and FE
    « Reply #10 on: December 18, 2021, 05:16:20 PM »
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    • I didn't give you a downvote.

    Reading the above, I realized it could be misunderstood.
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    Offline Ladislaus

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    Re: Test GE and FE
    « Reply #11 on: December 18, 2021, 06:26:35 PM »
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    • Quote from: Stanley N on December 18, 2021, 01:50:29 PM
    I'm proposing to do the Eratosthenes observations from several latitudes at the same time.

    So what do we assume the distance between the earth and sun is?  That's one of the chief problems with that experiment.
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    Offline Stanley N

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    Re: Test GE and FE
    « Reply #12 on: December 18, 2021, 06:28:04 PM »
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    • Quote from: Ladislaus on December 18, 2021, 06:26:35 PM
    So what do we assume the distance between the earth and sun is?  That's one of the chief problems with that experiment.
    No assumption.
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    Offline Miser Peccator

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    Re: Test GE and FE
    « Reply #13 on: December 19, 2021, 11:18:12 AM »
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    • Quote from: Stanley N on December 18, 2021, 01:50:29 PM


    If you're willing to try, what you need to do is take a measurement of
    - the angle the sun makes with "level"
    - or, equivalently the angle a shadow makes



    If you choose to take a shadow measurement, please verify that the item is vertical (with a plumb line or household leve) and report both its height and the shadow length.




     Yes, if your equipment isn't level then your calculations could be off.

    Since water is always level it makes sense to use a water level to check your equipment and make sure it's level.

    A water level is more accurate than even a laser.

    Since water is always level.

    Always.

    Everywhere.  :)
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    Offline Dingbat

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    Re: Test GE and FE
    « Reply #14 on: December 19, 2021, 11:31:40 AM »
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    • Quote from: Miser Peccator on December 19, 2021, 11:18:12 AM

     Yes, if your equipment isn't level then your calculations could be off.

    Since water is always level it makes sense to use a water level to check your equipment and make sure it's level.

    A water level is more accurate than even a laser.

    Since water is always level.

    Always.

    Everywhere.  :)
    :laugh1:

    This is the kind of FE discussion I like to see here. Charity comes first. Humor is good too  :laugh2: :laugh2: :laugh2:
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