"After this, the machine was raised again with two persons in its
gallery, M. Pilâtre de Rozier and M. Girond de Villette, the latter of
whom was therefore the second aërostatic adventurer. The machine
ascended to the height of about 300 feet, where it remained perfectly
steady for at least nine minutes, hovering over Paris, in sight of its
numerous inhabitants, many of whom could plainly distinguish, through
telescopes, the aërostatic adventurers, and especially M. de Rozier, who
was busy in managing the fire. When the machine came down, the Marquis
d'Arlandes, a major of infantry, took the place of M. Villette, and the
balloon was sent up once more. This last experiment was attended with
the same success as the preceding; which proved that the persons who
ascended with the machine did not suffer the least inconvenience, owing
to the gradual and gentle ascent and descent of the machine, and to its
steadiness or equilibrium while it remained in the air.
"If we consider for a moment the sensation which these first aërial
adventurers must have felt in their exalted situation, we can almost
feel the contagion of their thrilling experience ourselves. Imagine a
man elevated to such a height, into immense space, by means altogether
new, viewing under his feet, like a map, a vast tract of country, with
one of the greatest existing cities--the streets and environs of which
were crowded with spectators--attentive to him alone, and all expressing
in every possible manner their amazement and anxiety. Reflect on the
prospect, the encomiums, and the consequences; then see if your mind
remains in a state of quiet indifference.
"An instructive observation may be derived from these experiments; which
is, that when an aërostatic machine is attached to the earth by
ropes--especially when it is at a considerable height--the wind, blowing
on it, will drive it in its own horizontal direction; so that the cords
which hold the machine must make an angle with the horizon (which is
greater when the wind is stronger, and contrariwise); in consequence of
which the machine must be severely strained, it being acted on by three
forces in three different directions; namely, its power of ascension,
the tension of the ropes, which is opposite to the first, and the action
of the wind, which is across the other two. It is therefore infinitely
more judicious to abandon the machine entirely to the air, because it
will then stand perfectly balanced, and, therefore, under no strain
whatever."
In consequence of the report of the foregoing experiments, signed by the
commissaries of the Academy of Sciences, that learned and respectable
body ordered: (1) That the said report should be printed and published;
and (2) that the annual prize of six hundred livres, from the fund
provided by an anonymous citizen, be given to Messrs. Montgolfier, for
the year 1783.
FOOTNOTES:
[31] Louis XVI and Marie Antoinette.
FRAMING OF THE CONSTITUTION OF THE UNITED STATES
A.D. 1787
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account