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I come bearing gifts of knowledge Nebhead Send a noteboard - 02/08/2014 07:54:07 PM

If you want something to be seen 800 miles away, it needs to be about 80 miles tall. That's at the horizon though, not above rooftops. I'd add another 50%.


A 10 mile diameter clockface would be visible but pretty small at 800 miles.


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Maths! And whether or not I am applying them correctly to a ridiculous fantasy situation. Nate - 01/08/2014 06:39:38 PM 791 Views
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Pff. Nate - 06/08/2014 06:27:10 PM 689 Views
There's a simple way of testing that, I figure. Legolas - 01/08/2014 11:05:38 PM 625 Views
Re: There's a simple way of testing that, I figure. Nate - 01/08/2014 11:38:28 PM 791 Views
Would a thing 10 miles wide look bigger from 800 miles than a thing 2000 miles wide from 230,000? Joel - 02/08/2014 05:38:15 AM 745 Views
Re: Would a thing 10 miles wide look bigger from 800 miles than a thing 2000 miles ... Nate - 05/08/2014 05:14:08 AM 642 Views
What size is the planet itself ? AgentApple - 02/08/2014 11:21:40 AM 562 Views
Re: What size is the planet itself ? Nate - 05/08/2014 05:01:37 AM 765 Views
I come bearing gifts of knowledge Nebhead - 02/08/2014 07:54:07 PM 919 Views
Have you considered Nebhead - 02/08/2014 08:00:44 PM 730 Views
Re: Have you considered Nate - 05/08/2014 05:06:25 AM 785 Views
Air quality would affect visibility anyway, and you have to calculate curvature of the Earth. Tom - 03/08/2014 03:18:42 AM 548 Views
Re: Air quality would affect visibility anyway, and you have to calculate curvature of the Earth. Nate - 05/08/2014 05:09:48 AM 872 Views
See, I think you are doing this the wrong way around... jh - 04/08/2014 09:43:05 PM 592 Views
That's exactly what worried me. Nate - 05/08/2014 05:11:51 AM 658 Views
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