1inſtant, and its poſſible it may be a commixtion of my own
ceipts; and thoſe which I have ſometime read in the fore-ſaid
Books, by which I well remember, that I was then perfectly
ſatisfied, although the concluſions, at firſt ſight ſeem'd unto me
ſtrange Paradoxes. We enquire Simplicius, whether to the
king a reflection of light, like that which we receive from the
Moon, it be neceſſary that the ſuperficies from whence the
ction commeth, be ſo ſmooth and polite, as the face of a
Glaſſe, or whether a ſuperficies not ſmooth or poliſht, but rough
and uneven, be more apt for ſuch a purpoſe. Now ſuppoſing
two reflections ſhould come unto us, one more bright, the other
leſſe, from two ſuperficies oppoſite unto us, I demand of you,
which of the two ſuperficies you think would repreſent it ſelf to
our ſight, to be the cleareſt, and which the obſcureſt.
ceipts; and thoſe which I have ſometime read in the fore-ſaid
Books, by which I well remember, that I was then perfectly
ſatisfied, although the concluſions, at firſt ſight ſeem'd unto me
ſtrange Paradoxes. We enquire Simplicius, whether to the
king a reflection of light, like that which we receive from the
Moon, it be neceſſary that the ſuperficies from whence the
ction commeth, be ſo ſmooth and polite, as the face of a
Glaſſe, or whether a ſuperficies not ſmooth or poliſht, but rough
and uneven, be more apt for ſuch a purpoſe. Now ſuppoſing
two reflections ſhould come unto us, one more bright, the other
leſſe, from two ſuperficies oppoſite unto us, I demand of you,
which of the two ſuperficies you think would repreſent it ſelf to
our ſight, to be the cleareſt, and which the obſcureſt.
SIMPL. I am very confident, that that ſame, which moſt
cibly reflected the light upon me, would ſhew its ſelf in its aſpect
the clearer, and the other darker.
cibly reflected the light upon me, would ſhew its ſelf in its aſpect
the clearer, and the other darker.
SALV. Be pleaſed to take that Glaſſe which hangs on yonder
Wall, and let us go out into the Court-yard. Come Sagredus.
Now hang the glaſſe yonder, againſt that ſame Wall, on which
the Sun ſhines, and now let us with-draw our ſelves into the ſhade.
See yonder two ſuperficies beaten by the Sun, namely, the Wall
and the Glaſſe. Tell me now which appears cleareſt unto you,
that of the Wall or that of the Glaſſe? Why do you not anſwer
me?
Wall, and let us go out into the Court-yard. Come Sagredus.
Now hang the glaſſe yonder, againſt that ſame Wall, on which
the Sun ſhines, and now let us with-draw our ſelves into the ſhade.
See yonder two ſuperficies beaten by the Sun, namely, the Wall
and the Glaſſe. Tell me now which appears cleareſt unto you,
that of the Wall or that of the Glaſſe? Why do you not anſwer
me?
It is proved at
large that the
Moons ſurface is
ſharp.
large that the
Moons ſurface is
ſharp.
SAGR. I leave the reply to Simplicius, who made the
on; but I, for my own part, am perſwaded upon this ſmall
ginning of the experiment, that the Moon muſt be of a very
poliſht ſurface.
on; but I, for my own part, am perſwaded upon this ſmall
ginning of the experiment, that the Moon muſt be of a very
poliſht ſurface.
SALV. What ſay you Simplicius, if you were to depaint that
Wall, and that Glaſſe faſtened unto it, where would you uſe
your darkeſt colours, in deſigning the Wall, or elſe in painting
the Looking-Glaſſe.
Wall, and that Glaſſe faſtened unto it, where would you uſe
your darkeſt colours, in deſigning the Wall, or elſe in painting
the Looking-Glaſſe.
SIMPL. Much the darker in depainting the Glaſſe.
SALV. Now if from the ſuperficies, which repreſents it ſelf
more clear, there proceedeth a more powerful reflection of light,
the Wall will more forcibly reflect the raies of the Sun, than the
Glaſſe.
more clear, there proceedeth a more powerful reflection of light,
the Wall will more forcibly reflect the raies of the Sun, than the
Glaſſe.
SIMPL. Very well, Sir, have you ever a better experiment
than this? you have placed us where the Glaſſe doth not
berate upon us; but come along with me a little this way; how,
will you not ſtir?
than this? you have placed us where the Glaſſe doth not
berate upon us; but come along with me a little this way; how,
will you not ſtir?
SAGR. You perhaps ſeek the place of the reflection, which the
Glaſſe makth.
Glaſſe makth.
SIMPL. I do ſo.