Punching in your numbers gives me a little over 6 degrees.
asin(240338 / 2244000) = 6.15 degrees
Again, I'm just plugging your 425 mile and 22 dropoff figures. My own calculations were different than that.
would you notice 13 degrees?
Probably. I might able to recognize 6 degrees or the even the lesser angle I calculated myself a few years ago. I do find it surprising how little the horizon line should drop even at such great heights.
This is exactly the point I'm trying to make. A person would have to travel over 20 miles up before they could even begin to perceive the arc of the Earth.
Think about it differently. you are about 5.5 miles high and are looking out across 200 miles, and there is 5 miles of drop in all directions, dropping slightly at first but getting steeper as you look to the horizon. still saying the same thing, and you are saying you would not notice this and i am saying you would.
From an airplane you wouldn't be able to perceive anything other than a straight line at eye level. If we were standing on a more stable structure which is 6 miles high, then perhaps a level could be used to show that the horizon is slightly lower than straight ahead.
look at this
I clicked around the video, and have watched others like it. The apparently flat horizon is what I would expect to see at that height whether the Earth is flat or round. Consider the calculations we just made. The horizon would be a few degrees below level in all directions, and appear flat. You would need to travel much higher before an arc could be seen.
Punching in your numbers gives me a little over 6 degrees.
asin(240338 / 2244000) = 6.15 degrees
Again, I'm just plugging your 425 mile and 22 dropoff figures. My own calculations were different than that.
Probably. I might able to recognize 6 degrees or the even the lesser angle I calculated myself a few years ago. I do find it surprising how little the horizon line should drop even at such great heights.
This is exactly the point I'm trying to make. A person would have to travel over 20 miles up before they could even begin to perceive the arc of the Earth.
From an airplane you wouldn't be able to perceive anything other than a straight line at eye level. If we were standing on a more stable structure which is 6 miles high, then perhaps a level could be used to show that the horizon is slightly lower than straight ahead.
I clicked around the video, and have watched others like it. The apparently flat horizon is what I would expect to see at that height whether the Earth is flat or round. Consider the calculations we just made. The horizon would be a few degrees below level in all directions, and appear flat. You would need to travel much higher before an arc could be seen.