by Nitpicker » Mon Mar 25, 2019 2:31 am
Guest wrote: ↑Sat Mar 23, 2019 6:34 pm
Looking at the image and reading the description. If it was taken 40 km (25 miles) from Madrid, why is the city not below the horizon? The curvature of the earth should make the city just a glow on the horizon. Have we been photo-shopped?
Considering a perfectly spherical Earth of radius 6371 km, an observer 45 km away from the Cuatro Torres Business Area in Madrid (which is about 7 km NNE of central Madrid) would only require an elevation of 160 metres above the base of the four towers, in order to see their ground floors. About 45 km due west of the CTBA, there are hills that rise at least 400 metres above the ground elevation of the CTBA. (And the tallest of the four towers is 250 metres above ground, which is coherent with the camera's distance of 40 to 45 km from the towers.) So, the numbers add up, and I'd certainly give the photographer the benefit of any doubt.
[quote=Guest post_id=290796 time=1553366091]
Looking at the image and reading the description. If it was taken 40 km (25 miles) from Madrid, why is the city not below the horizon? The curvature of the earth should make the city just a glow on the horizon. Have we been photo-shopped?
[/quote]
Considering a perfectly spherical Earth of radius 6371 km, an observer 45 km away from the Cuatro Torres Business Area in Madrid (which is about 7 km NNE of central Madrid) would only require an elevation of 160 metres above the base of the four towers, in order to see their ground floors. About 45 km due west of the CTBA, there are hills that rise at least 400 metres above the ground elevation of the CTBA. (And the tallest of the four towers is 250 metres above ground, which is coherent with the camera's distance of 40 to 45 km from the towers.) So, the numbers add up, and I'd certainly give the photographer the benefit of any doubt.