On the AE map, the circumference of the Sun's path over the Tropic of Cancer (northern summer) is shorter than the path over the Tropic of Capricorn (northern winter).
Since we've observed that the length of a day is the same in the summer as in the winter, that means the Sun must move faster when it's down south than when it's up north.
Well, that I think I understood in the first place, the problem is, he really assumed the Sun runs faster (distance/time) in December over the Southern Hemisphere than on June on the North? That does not match any actual measurements. This is why I asked for explanations, since I don't believe it was saying the Sun find a way to accelerate substantially to keep the exact radial speed of 15°/h, this assumption would create lots of more questions and disbelief than anything else, I mean, about the solar speed mechanics and downpour carpeting radiation.
According to statistical measurements, the NH is warmer about 1.25 ~ 1.5°C than SH, what is very very little compared to what it would be if the Sun accelerates over SH. The main reason for that is the larger oceans water mass in SH than on NH, and if the solar energy is lower than 1kW/m² (as it is on NH), the temperature difference would be much more, follows after the weblink:
http://ocp.ldeo.columbia.edu/res/div/ocp/pub/seager/Kang_Seager_subm.pdfTotal FE area = r²xPI = 20000²xPI = 1256636000 km²
NH area = r²xPI = 10000²xPI = 314159000 km²
SH area = TotalArea - NHArea = 1256636000 - 314159000 = 942477000 km²
Total FE Area = 1.256 E+9
NH Area = 3.141 E+8
SH Area = 9.424 E+9
FE SH area is in fact 30 times larger than NH
How come NH can be only 1.25 ~ 1.5°C warmer than SH?
For FE SH temperature to be the almost the same as FE NH, the FE Sun would need to be 30 times hotter in January.
For the ones that didn't get it yet, if you pass your hand very close over a candle flame it may burn, or not, it only depends on how fast your hand moves. In the FE January, the Sun needs to cover 30 times more km² per second than it covers the Northern Hemisphere in July, so it moves faster, radiating less energy per km² to the land on January than on July when it moves slower. Even needing to cover 30 times more land, the land temperature is almost the same on both hemispheres.
Lets calculate:
FE say on July the Sun is circling Earth every (lets round to) 24 hours, right over the Tropic of Cancer, at 23°26' North.
FE say on January the Sun is circling Earth during the same period of time, over the Tropic of Capricorn, at 23°26' South.
Considering FE disc to have 180° from North Pole to Ice Wall:
Tropic of Cancer is at 23°.26' (23.4333°) North from Equator, means 66.566° from North Pole.
Tropic of Capricorn is at 23.4333° South of Equator, means 113.433° from North Pole.
The circumference the Sun must travel when over the Tropic of Cancer on July will be the radius x 2 x PI.
The Tropic of Cancer radius is FE radius x 66.566/180, 20000 km x 66.566 / 180 = 7396km
Tropic of Cancer circumference = 7396 x 2 x 3.14159 = 46471 km.
The circumference the Sun must travel when over the Tropic of Capricorn on January will be the radius x 2 x PI.
The Tropic of Cancer radius is FE radius x 113.433 /180, 20000 km x 113.433 / 180 = 12603km
Tropic of Capricorn circumference = 12603 x 2 x 3.14159 = 79191 km
Now;
the speed of FE Sun rotating over
FE Tropic of Cancer is 46471 km / 24h =
1936.3 km/hthe speed of FE Sun rotating over
FE Tropic of Capricorn is 79191 km / 24h =
3299.6 km/hThe speed difference is 3299.6 / 1936.3 =
1.7x(I will not even question what makes the Sun accelerate or break speed and change circling diameter)
Means, the FE Sun runs 1.7x faster over the Tropic of Capricorn than over the Tropic of Cancer.
It simply means that the Northern Hemisphere solar speed would spread
70% more radiation per second than to Southern Hemisphere.
This is not true in the real world, the NH is NOT 70% hotter than SH, it would be much more than just 1.5°C.
Also, the above calculations should take in consideration just radiation per second, not radiation per squared area of land.
On the top of this post, I considered squared area land, and came to 30x less radiation per km² in the South than in the North.
What it is again, not true in the real world.
The actually measured solar radiation energy in average, between tropics to be 1kW/m². Based on the 70% difference of solar radiation per km² on FE, if measured 1kW/m² in Rio de Janeiro (what is real), then a person living on Central Florida would receive 1.7kW/m², that is not true, it will be cooking everything on land.
Other important thing, consider the sun speeding 1.7 faster on the Tropic of Capricorn, it means people on the Southern Hemisphere would notice the Sun moving 70% faster on January sky, shadows on ground moving 70% faster, etc. This is also not true.
Based on FE perspective, vanish point and "can not see far due atmosphere not being transparent", the Sun would disappear from southern sky on January 70% faster than on July on North. If on the North we can see the Sun during 12 hours on July, then on the South we will see the Sun only for 3.6 hours on January, what is also not true.
So, this is why I don't understand the text on item #53, it is just one paragraph, without any calculation, thermal per area, nothing. How can people take seriously a vague statement floating in the air like that? I also don't believe that on 1885 people didn't use numbers to state scientific thoughts or ideas.