The components of the armillary sphere are labeled.
A
equinoctial ring, showing the sun's ascension
b
north pole nut holding sun Ψ
B
ecliptic ring, showing location of the sun on a specific day of a month
C
tropic of Cancer
d
pin holding moon Ζ
D
tropic of Capricorn
e
where tropic of Cancer touches ecliptic
E
arctic circle
f
where tropic of Capricorn touches ecliptic
F
antarctic circle
G
equinoctial colure
H
solstitial colure
J
terrestrial globe
K
terrestrial axis
L
flat celestial meridian
M
movable horizon
n
terrestrial north pole
N
celestial north pole
N
pedestal
O
joint
P
arc of joint O (0 to 90 degrees)
Q
brass arm
r
elevation screw
R
upright piece
s
terrestrial south pole
S
celestial south pole
T
box
U
1st of 2 axes of wheels for T (earth turns)
V
2nd of 2 axes of wheels for T (sphere of circles turns)
W
winch
Ψ
sun
Ζ
moon
Beskrivelse
BeskrivelseEB1711 Armillary Sphere.png
Armillary sphere, from Plate LXXXVII
Dato
Kilde
Encyclopedia Britannica, Vol. II, pg. 681
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