Flerf Wiki - User contributions [en]

Horizon Dip Measurements

2024-12-26T23:05:27Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 m
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Tyler.jpg
|Source/Credit= @Tylerthepilot_ on Twitter
|altitude=35820 m
|dip=4.8°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=~4°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=>2°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-bk.webp
|Source/Credit=BK, flight from Newcastle to Brisbane, in Australia:
|altitude=36706 ft
|dip=~2°
|device=Theodolite
}}

{{Dip
|image=File:Screenshot 2024-12-16 at 10.35.21 PM.png
|Source/Credit=Wolfie6020
|altitude=46000 ft
|dip=
|device=cockpit display
}}

</div>

[[Category:Science data]]

File:Tyler.jpg

2024-12-26T23:02:31Z

Dave: Cockpit image from @Tylerthepilot_

== Summary ==
Cockpit image from @Tylerthepilot_

Horizon Dip Measurements

2024-12-17T05:38:07Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 m
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=~4°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=>2°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-bk.webp
|Source/Credit=BK, flight from Newcastle to Brisbane, in Australia:
|altitude=36706 ft
|dip=~2°
|device=Theodolite
}}

{{Dip
|image=File:Screenshot 2024-12-16 at 10.35.21 PM.png
|Source/Credit=Wolfie6020
|altitude=46000 ft
|dip=
|device=cockpit display
}}

</div>

[[Category:Science data]]

File:Screenshot 2024-12-16 at 10.35.21 PM.png

2024-12-17T05:35:51Z

Dave:

Horizon Dip Measurements

2024-12-17T05:33:07Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 m
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=~4°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=>2°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-bk.webp
|Source/Credit=BK, flight from Newcastle to Brisbane, in Australia:
|altitude=36706 ft
|dip=~2°
|device=Theodolite
}}
</div>

[[Category:Science data]]

File:Theodolite-app-bk.webp

2024-12-17T05:31:45Z

Dave:

Horizon Dip Measurements

2024-12-17T05:25:44Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 m
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=~4°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=>2°
|device=Theodolite
}}

</div>

[[Category:Science data]]

Horizon Dip Measurements

2024-12-17T05:25:19Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 km
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=~4°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=>2°
|device=Theodolite
}}

</div>

[[Category:Science data]]

Horizon Dip Measurements

2024-12-17T05:22:32Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 km
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=more than the moon
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-dwolfman54-.webp
|Source/Credit=@dwolfman54 on Twitter
|altitude=33709 ft
|dip=
|device=Theodolite
}}

</div>

[[Category:Science data]]

File:Theodolite-app-dwolfman54-.webp

2024-12-17T05:21:10Z

Dave:

Horizon Dip Measurements

2024-12-17T05:19:37Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit= Globular EPIC Bikini @FlatSlugbrains on Twitter
|altitude=11074 km
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Moon.jpg
|Source/Credit=McToon
|altitude=35091 ft
|dip=more than the moon
|device=Theodolite
}}

</div>

[[Category:Science data]]

File:Moon.jpg

2024-12-17T05:17:01Z

Dave: From McToon flying from Anchorage to Minneapolis

== Summary ==
From McToon flying from Anchorage to Minneapolis

Horizon Dip Measurements

2024-12-17T05:14:25Z

Dave:

Horizon Dip Measurements

2024-12-17T05:13:34Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit=McToon
|altitude=11074 km
|dip=3.3°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit=McToon
|altitude=1100 km
|dip=3°
|device=Theodolite
}}

</div>

[[Category:Science data]]

Template:Dip

2024-12-17T00:42:10Z

Dave:

Template:Sunspot

2024-12-17T00:40:29Z

Dave:

<div class="sunspot" style="position: relative;float: left">
<table class="wikitable" style="margin-bottom:0;width:384px;height:550px">
<tr>
<th class="sunspotimage" colspan="2">[[{{{image}}}|x256px||center|thumb]]</th>
</tr>
<tr>
<th>Source/Credit</th>
<td>{{{Source/Credit|''unknown''}}}</td></tr>
<tr>
<th>Date</th>
<td>{{{date|''unknown''}}}</td>
</tr>
<tr>
<th>Time</th>
<td>{{{time|''unknown''}}}</td>
</tr>
<tr>
<th>Timezone</th>
<td>{{{tz|''unknown''}}}</td>
</tr>
<tr>
<th>Longitude</th>
<td>{{{long|''unknown''}}}</td>
</tr>
<tr>
<th>Latitude</th>
<td>{{{lat|''unknown''}}}</td>
</tr>
{{#if:{{{azimuth|}}}|
<tr>
<th>Target azimuth</th>
<td>{{{azimuth|''unknown''}}}</td>
</tr>
}}
{{#if:{{{elevation|}}}|
<tr>
<th>Target elevation</th>
<td>{{{elevation|''unknown''}}}</td>
</tr>
}}
<tr>
<th>Camera</th>
<td>{{{camera|''unknown''}}}</td>
</tr>
<tr>
<th>Lens</th>
<td>{{{lens|''unkonwn''}}}</td>
</tr>
{{#if:{{{originalresolution|}}}|
<tr>
<th>Original resolution</th>
<td>{{{originalresolution}}}</td>
</tr>
}}
</table>
</div>

Horizon Dip Measurements

2024-12-17T00:38:28Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own image, email dip@mctoon.net Please include the following details with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device generating the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''</br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit=McToon
|altitude=1100 km
|dip=3°
|device=Theodolite
}}

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit=McToon
|altitude=1100 km
|dip=3°
|device=Theodolite
}}

</div>

[[Category:Science data]]

Template:Sunspot

2024-12-17T00:37:11Z

Dave:

<div class="sunspot" style="position: relative;float: left">
<p>testing</p>
<table class="wikitable" style="margin-bottom:0;width:384px;height:550px">
<tr>
<th class="sunspotimage" colspan="2">[[{{{image}}}|x256px||center|thumb]]</th>
</tr>
<tr>
<th>Source/Credit</th>
<td>{{{Source/Credit|''unknown''}}}</td></tr>
<tr>
<th>Date</th>
<td>{{{date|''unknown''}}}</td>
</tr>
<tr>
<th>Time</th>
<td>{{{time|''unknown''}}}</td>
</tr>
<tr>
<th>Timezone</th>
<td>{{{tz|''unknown''}}}</td>
</tr>
<tr>
<th>Longitude</th>
<td>{{{long|''unknown''}}}</td>
</tr>
<tr>
<th>Latitude</th>
<td>{{{lat|''unknown''}}}</td>
</tr>
{{#if:{{{azimuth|}}}|
<tr>
<th>Target azimuth</th>
<td>{{{azimuth|''unknown''}}}</td>
</tr>
}}
{{#if:{{{elevation|}}}|
<tr>
<th>Target elevation</th>
<td>{{{elevation|''unknown''}}}</td>
</tr>
}}
<tr>
<th>Camera</th>
<td>{{{camera|''unknown''}}}</td>
</tr>
<tr>
<th>Lens</th>
<td>{{{lens|''unkonwn''}}}</td>
</tr>
{{#if:{{{originalresolution|}}}|
<tr>
<th>Original resolution</th>
<td>{{{originalresolution}}}</td>
</tr>
}}
</table>
</div>

Horizon Dip Measurements

2024-12-17T00:34:48Z

Dave:

Template:Dip

2024-12-17T00:33:36Z

Dave:

Template:Dip

2024-12-17T00:30:40Z

Dave: Created page with "<div class="dip" style="position: relative;float: left"> <table class="wikitable" style="margin-bottom:0;width:384px;height:550px"> <tr> <th class="dipimage" colspan="2">thumb</th> </tr> <tr> <th>Source/Credit</th> <td>{{{Source/Credit|''unknown''}}}</td></tr> <tr> <th>Date</th> <td>{{{date|''unknown''}}}</td> </tr> <tr> <th>Time</th> <td>{{{time|''unknown''}}}</td> </tr> <tr> <th>Timezone</th> <td>{{{tz|..."

<div class="dip" style="position: relative;float: left">
<table class="wikitable" style="margin-bottom:0;width:384px;height:550px">
<tr>
<th class="dipimage" colspan="2">[[{{{image}}}|x256px||center|thumb]]</th>
</tr>
<tr>
<th>Source/Credit</th>
<td>{{{Source/Credit|''unknown''}}}</td></tr>
<tr>
<th>Date</th>
<td>{{{date|''unknown''}}}</td>
</tr>
<tr>
<th>Time</th>
<td>{{{time|''unknown''}}}</td>
</tr>
<tr>
<th>Timezone</th>
<td>{{{tz|''unknown''}}}</td>
</tr>
<tr>
<th>Longitude</th>
<td>{{{long|''unknown''}}}</td>
</tr>
<tr>
<th>Latitude</th>
<td>{{{lat|''unknown''}}}</td>
</tr>
{{#if:{{{azimuth|}}}|
<tr>
<th>Target azimuth</th>
<td>{{{azimuth|''unknown''}}}</td>
</tr>
}}
{{#if:{{{elevation|}}}|
<tr>
<th>Target elevation</th>
<td>{{{elevation|''unknown''}}}</td>
</tr>
}}
<tr>
<th>Camera</th>
<td>{{{camera|''unknown''}}}</td>
</tr>
<tr>
<th>Lens</th>
<td>{{{lens|''unkonwn''}}}</td>
</tr>
{{#if:{{{originalresolution|}}}|
<tr>
<th>Original resolution</th>
<td>{{{originalresolution}}}</td>
</tr>
}}
</table>
</div>

Horizon Dip Measurements

2024-12-16T21:53:22Z

Dave:

Horizon Dip Measurements

2024-12-16T21:50:49Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, we would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, we would expect the horizon to always "rise to eye level".

This page is a gallery of photos showing the measured dip of the horizon from horizontal.

= Instructions =

If you want to submit your own, email dip@mctoon.net Please include the following detail with your submission:

1. A clearly visible horizon (ideally, no clouds at, or near the horizon)

2. An instrumented graphic overlay showing true horizontal

3. The name of the device used to show the graphic overlay

3. Altitude at time of photo

4. Image Source/Credit. Please indicate if you want to be credited and how. We do not wish to dox anyone but we do want to appropriately give credit where it is due.

= Gallery =

'''Note:'''<br>Some photos are cropped due to the size limit for uploaded files.

<div class="Dip">

{{Dip
|image=File:= Gallery =

'''Note:'''<br>Some photos are cropped due to the size limit for uploaded files.

<div class="dip">

{{Dip
|image=File:Theodolite-app-flatslugbrains-.jpg
|Source/Credit=McToon
|altitude=1100 km
|dip=3°
|device=Theodolite
}}
|Source/Credit=<source>
|altitude=<altitude>
|dip=<dip>
|device=<device>
}}

</div>

Horizon Dip Measurements

2024-12-16T21:49:40Z

Dave:

Horizon Dip Measurements

2024-12-16T21:46:54Z

Dave:

Horizon Dip Measurements

2024-12-16T21:46:16Z

Dave:

Horizon Dip Measurements

2024-12-16T21:45:04Z

Dave:

File:Theodolite-app-flatslugbrains-.jpg

2024-12-16T21:40:04Z

Dave: Image from mctoon.net showing horizon dip at altitude.

== Summary ==
Image from mctoon.net showing horizon dip at altitude.

Horizon Dip Measurements

2024-12-16T21:39:09Z

Dave:

Horizon Dip Measurements

2024-12-09T18:08:56Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the unrefracted horizon for various altitudes:

{| class="wikitable"
| style="background:#d0e5f5;text-align:center" | Altitude
| style="background:#d0e5f5;text-align:center" | Dip
|- halign="center"
| 10,000 ft || 1.772°
|-
| 20,000 ft || 2.505°
|-
| 30,000 ft || 3.068°
|-
| 40,000 ft || 3.542°
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T18:05:23Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the unrefracted horizon for various altitudes:

{| class="wikitable"
| style="background:#d0e5f5;text-align:center" | Altitude
| style="background:#d0e5f5;text-align:center" | Dip
|- halign="center"
| 10,000 ft || drop1
|-
| 20,000 ft || drop1
|-
| 30,000 ft || drop1
|-
| 40,000 ft || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T18:04:52Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the unrefracted horizon for various altitudes:

{| class="wikitable"
| style="background:#d0e5f5;text-align:center" | Altitude
| style="background:#d0e5f5;text-align:center" | Dip
|- halign="center"
| 10,000 ft || drop1
| 20,000 ft || drop1
| 30,000 ft || drop1
| 40,000 ft || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:55:43Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{| class="wikitable"
| style="background:#d0e5f5;align:center"Altitude
| Dip
|- halign="center"
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:53:42Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{| class="wikitable"
| Altitude
| Dip
|- halign="center"
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:51:57Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{| class="wikitable"
| Altitude
| Dip
|- halign
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:49:55Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{| class="wikitable"
| Altitude
| Dip
|-
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:49:04Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:</br>
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{|
| Altitude
| Dip
|-
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:48:47Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:
h = the height or altitude of the observation </br>
R = the radius of the earth (6,378 km)

Here is a table of the expected dip of the horizon for various altitudes:

{|
| Altitude
| Dip
|-
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:47:09Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. In fact, we can calculate the expected dip of the horizon for any altitude using this formula:

<math>
\text{Dip} = \sqrt{\frac{2h}{R}}
</math>

Where:
h = the height of the observation
R = the radius of the earth (6,378 km)

{|
| Altitude
| Dip
|-
| 10,000 km || drop1
|}

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them. If the plan is finite, there would be slight dip of the apparent horizon from the horizontal, but not nearly as much as on the globe. We can calculate this expected dip for any altitude as well.

Measurements will be forthcoming.

Horizon Dip Measurements

2024-12-09T17:45:00Z

Dave:

Horizon Dip Measurements

2024-12-04T08:44:17Z

Dave:

Horizon Dip Measurements

2024-12-04T08:43:54Z

Dave:

Horizon Dip Measurements

2024-12-04T08:41:05Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them.

Measurements will be forthcoming.

{| class="wikitable" style = "float: left; margin-left:15px;"
|+ Metric
|-
| {{calculator label|Weight|for=weightkg}} || {{calculator|id=weightkg|size=3|default=80}} kg
|-
| {{calculator label|Height|for=heightcm}} || {{calculator|id=heightcm|size=3|default=160}} cm
|-
| BMI || '''{{calculator|id=bmimetric|type=plain|formula=round(weightkg/pow(heightcm/100,2))|default=31|style=min-width:3ch;display:inline-block}} kg/m<sup>2</sup>'''
|}

Horizon Dip Measurements

2024-12-04T08:40:26Z

Dave:

The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon.

On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve.

On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angular resolution between them.

Measurements will be forthcoming.

{{#invoke:Math|precision|2}}

'''Horizon Dip Calculator'''
The following calculator estimates the dip of the horizon based on altitude above Earth's surface.

== Formula ==
\[
\text{Dip} = \sqrt{\frac{2h}{R}}
\]

== Inputs ==
* '''Altitude (h)''': Height above Earth's surface in meters.
* '''Earth's radius (R)''': Approximate value is 6,371,000 meters.

== Result ==
\[
\text{Result} = {{#expr:sqrt(2 * {{{altitude|0}}} / {{{radius|6371000}}})}}
\]

== Usage ==
{{HorizonDip
| altitude = 1000
| radius = 6371000
}}

Horizon Dip Measurements

2024-12-01T20:41:27Z

Dave: Created page with "The horizon dip measurement is the angle between the horizontal (the line perpendicular to the vertical at a specific point) and the apparent horizon. On a globe, you would expect this angle to increase with increasing altitude, because the horizon would drop away with the curve. On a flat earth, if the plane is infinite, you would expect no drop of the horizon with increasing altitude. You would just be able to better resolve distant points because of the greater angu..."