Oldal 33 [33]
REFLEXIONS IN SMOOTH WATER 13
C, the weathercock on the church tower, D, and the
moon, all in one straight line. AB represents the sur¬
face of the water. To find in the reflexion, as he sees
it, the height both of the weathercock and of the moon
as compared with the tree C in the foreground, it is
only necessary to draw the vertical EL to the level
of the water at L, and produce it to e, so that EL is
equal to Le. Then a straight line drawn from e to the
weathercock will determine at what height the latter
will appear in the reflexion through the branches of
the tree. This will be, as shown in the diagram, at
about two-thirds of the height of the tree. The moon
being practically at an infinite distance, we must, in
order to find her position in the reflexion, draw a line
from e parallel to ED. Having done this, we see that
the reflected moon will be hidden behind the reflexion
of the church; if the church were not in the way, the
moon would appear about on a level with the top of
the willow stem. The general effect will be as shown
in Fig. 6.
It will now be evident to what extent the reflexions
differ from the direct view of the objects reflected.
The higher we are above the water the less of the