Agriculture Reference
In-Depth Information
Solar
rays
N
30°
HL
N
43°
HL
Night
N
66°
HL
N
90°
HL
Day
Fig. 2.3.
The incidence of the solar rays on the earth in the winter solstice in the northern hemisphere.N, Apparent position of the Sun at noon at
different latitudes; HL, horizontal line on each latitude.
Arctic Circle
Solar
rays
Night
N
76°
HL
N
90°
Day
HL
HL
66°
N
HL
43°
N
Antarctic Circle
Fig. 2.4.
The incidence of the solar rays on the earth in the summer solstice in the northern hemisphere.
N, Apparent position of the Sun at noon at different latitudes; HL, horizontal line each latitude.
