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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 751 Views
You didn't even spell it right. nossy - 01/08/2014 07:38:12 PM 540 Views
I have no idea what you mean. Nate - 01/08/2014 07:55:22 PM 654 Views
I suspect Sareitha Sedai - 04/08/2014 03:42:34 PM 514 Views
Pff. Nate - 06/08/2014 06:27:10 PM 644 Views
There's a simple way of testing that, I figure. Legolas - 01/08/2014 11:05:38 PM 572 Views
Re: There's a simple way of testing that, I figure. Nate - 01/08/2014 11:38:28 PM 737 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 698 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 603 Views
What size is the planet itself ? AgentApple - 02/08/2014 11:21:40 AM 508 Views
Re: What size is the planet itself ? Nate - 05/08/2014 05:01:37 AM 716 Views
I come bearing gifts of knowledge Nebhead - 02/08/2014 07:54:07 PM 859 Views
Have you considered Nebhead - 02/08/2014 08:00:44 PM 682 Views
Re: Have you considered Nate - 05/08/2014 05:06:25 AM 747 Views
Air quality would affect visibility anyway, and you have to calculate curvature of the Earth. Tom - 03/08/2014 03:18:42 AM 512 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 835 Views
See, I think you are doing this the wrong way around... jh - 04/08/2014 09:43:05 PM 541 Views
That's exactly what worried me. Nate - 05/08/2014 05:11:51 AM 618 Views
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