Wilkins, John, A discovery of a new world : or a discourse tending to prove, that 'tis probable there may be another Habitable World in the Moon ; with a discourse concerning the Probability of a Passage thither; unto which is added, a discourse concerning a New Planet, tending to prove, that 'tis probable our earth is one of the Planets

Page concordance

< >
Scan Original
111 99
112 100
113 101
114 102
115 103
116 104
117 105
118 106
119 107
120 108
121 109
122 110
123 111
124 112
125 113
126 114
127 115
128 116
129 117
130 118
131 119
132 120
133 121
134 122
135 123
136 124
137 126
138 127
139 126
140 128
< >
page |< < (51) of 370 > >|
6351That the Moon may be a World. Waters afar off, miſtook them for Blood. Et
cauſa hujus eſt quia radius ſolaris in Aurora con-
112 Queſt. in
hoc cap.
traiht quondam rubedinem, propter vapores cam-
buſtos manentes circa ſuperficiem terrœ, per quos
raàii tranſeunt, &
ideo cum repercutiantur in
aqua ad oculos noſtros, trahunt ſecum eundem rubo-
borem, &
faciunt apparere locum aquarum, in quo
eſt repercuſſio, eſſe rubrum, ſaith Toſtatus.
The
Reaſon is, becauſe of his Rays, which being
in the lower Vapours, thoſe do convey an im-
perfect mixed Light upon the Waters.
Thus
the Moon being in the Earth's Shadow, and
the Sun Beams which are round about it, not
being able to come directly unto her Body, yet
ſome ſecond Rays there are, which paſſing
through the ſhadow, make her appear in that
ruddy colour:
So that ſhe muſt appear bright-
eſt when ſhe is Eclipſed, being in her Apoge,
or greateſt diſtance from us, becauſe then the
cone of the Earths ſhadow is leſs, and the
Refraction is made through a narrower
Medium.
So on the contrary, ſhe muſt be
repreſented under a more Dark and Obſcure
form when ſhe is Eclipſed, being in her Peri-
ge or neareſt to the Earth, becauſe then ſhe is
Involv'd in a greater ſhadow, or bigger part
of the cone, and ſo the Refraction paſſing
through a greater Medium, the Light muſt
needs be Weaker which doth proceed from it.
If you ask now, what the Reaſon may be of
that Light which we Diſcern in the Darker
part of the New Moon?
I anſwer, ’tis Re-
flected from our Earth, which returns as great
a Brightneſs to that Planet, as it receives from
it.
This I ſhall have occaſion to Prove after-
ward.

Text layer

  • Dictionary

Text normalization

  • Original

Search


  • Exact
  • All forms
  • Fulltext index
  • Morphological index