Weekly national intelligencer. [volume] (Washington [D.C.]) 1841-1869, 1851-08-30

proper illustration for the annual revolution Nor does
the pendulum have any tendency for the north star any
other star towards which it may happen to be originally
started, supposed by Brds-eye," and which perpexes
Mr.. Merweaher But all these facts Of its moving in the
pane in parallel planes in planes which parallel in
certain directions, and keeping in the direction of the
only Of the results Of Wis ner~, and by fixing
them in minds alone cannot follow the movement Of
the pendulum in it's journey around the sphere. is
through cubes Of induction BY the help Of any vsiona
solutions Of the quadaure Of the circle that enabled
to see when power acts and when it ceases
BY that contradiction Of terms Wis inerlis, express
that there be motion without mover and that there
arresng Of motion without the exercise Of such
power fact, that there be effect without
By cngng to the idea that the pendulum strives to in
parallel planes better than those philosophers who
adopted the MAXIM Nature aDhors !" which alb
horrence Toice discovered be nothing than the
weight Of and what might be called The adherence by
Of unparalel motions is nothing than the alb
sence Of certain powers.
With this view Of the subject is first necessary to learn
what powers operating upon the pendulum, and what
powers affecting the line in the sand, with which il is
compared but which do affect the motion Of the pendu
lam is the difference Of the results of these which gives
value to the experiment.
Owing to the peculiar construction of the pendulum, that
portion the earth to which attached may revove about
the vertical without altering the direction of its oscillation
for although may turn the ball ITSELF still the whole
has the impulse, and is immaterlal which part
first But the line upon the ground fixed and must follow
this revolution about the vertical When the vertical
must be accompanied by the pendulum, because is at
tached it when defects the of oscillation in obe
dence gravity still ntersect the vertical and remain
MISUNDERSTANDING in this the conditions Of the
line the sand So that however much may be the rotation
of the suspension about the VERTICAL and consequent deec
ton the line in sand does affect the arc Of osc
laion. This is evident at the poles but have to show
that is at the poles alone that the suspension roates
When wndngree is turned around the upright pins at
tached its only travel in circle around the axle
but make rotation about their centres; for the side
which opposite side of the becomes
syey opposite each of the others This is what
by the rotation of the vertical column to which the pendulum
is attached. Since this motion is the only that does not
affect both the pendulums and the line in the sand,
y remains ascertain the extent of this rotation of the
cal column different latudes for is this which informs
us that the earth turning and records the data for a
tude and time.
At the equator is apparent that the vertical column
though constantly DETECTING has rotation about the ve
cal line than had the Of the windng-r If
line be fixed to that column rghtanges to the vertical
line, (Which the line in the sand will be DETECTED
less it put in the direction Of the movement if be
placed and west make the detection the
vertical placed north and south, that lie, gh-angles to
the notion its direction remains unchanged for the vertical
is always the angle with this first position, north and
SOUTH If this line be placed north 45o cast in twelve hours
will be found still north 45o east just 900 from it's ORR
gna position Here, those who suppose that the pendulum
for parallel plane would be led into the greatest error
for they would have cared ascertain that it the de-
Election Of the vertical alone which caused this divegence
which affects the penduums just does the line in the
sand This be illustrated by observing upon seal the
direction of several lines upon it when the face turned up
turning the face down without any toon, the impress
will show all these lines in different directions except one
and that is the which rght-anges the direction
in which it turned. From this it may be that the
vertical column the equator undegoes rotation, from
which motion the penduuns is peculiarly exempt and
thereby leaving and the line in the sand under exactly the
conditions that Of detecting with the vertical according
its original positions that here they must coincide
But when we come up upon latitude, the vertical column
begins acquire the motion had the poes and to lose
that which had the equator The developed from
the described by VERTICAL evidently expresses the amount
DETECTION has performed during sdea day, just the
plane described BY it the equator expresses the
amount of DETECTION there and the line expresses the
pole.
But the chief end of our inquiry the amount of rota-
i
or the line which placed parallel to the earths axis,
and rigAtangles 10 the movement retains its direction
throughout the days and that line should have dverged from
its parallel have been rotation Of the vertical
column and that line had remained normal to the notion
then divergence from its parallel could have been caused
BY the DETECTION Of the vertical From this may conclude
whatever detection the horizontal may make that has al
ways been normal the movement could have been
caused by the DETECTION Of the VERTICAL but entirely due
the rotation of the vertical column to which
attached In any latitude line drawn upon the earth north
and SOUTH this line constantly normal to the
although this changes its direction at every point yet the line
defects proportional Therefore the sector devel
oped from the described by the north and south horizon
tai expresses the rotation Of the vertical column during
ders day. Just as the circular plane docs at the poles and the
developed cylinder the equator II must be that the
described by the north and south horizontal different
ATTITUDES form the angle with their axis that of the
latitude originating ia cylinder at the equator and ending
in plane the pole ;the sectors developed from these
have their obque height for radius and Of the same
length the circle Of latitude.
So much for the theory which considers the earth be
perfect sphere, and gravity act from point the cen,e
while that and the earh motion to be the only powers which
affect the pendulum which enough to the truth to
give great value to the experiment and whatever be the
error Of this assumption, the pendulum will tell Of it. Gen.
rfusal force direct contradiction gravity may
weaken force, but does change the direction Of it,