The purpose of my paper is to call attention to the unique
mechanical properties of the radiometer. The radiometer is a
glass bulb with a partial vacuum of rarefied gases with
enclosed vanes of reflective and non reflective surfaces which
rotate in response to light or radiant energy heating the non
reflective vane surfaces.
In 1879 J. Clerk and O. Reynolds found a lateral motion of the
heated, energized gas molecules on the non reflective side of
the vane surface results in the energized gas molecules
slipping over the vane edges and exerting a force on the vane
edges. The energized heated molecules from the non reflective
side "...strike the edges obliquely and impart a higher force
than the colder molecules". Thus exerting a net force on the
radiometer vane edges. The rarefied gas molecules then slip
back toward the opposite direction on the other side of the
vane. (1)
In contrast to conventional engines with attached parts, the
rarefied gas molecules of the radiometer would be semi
independent of the vane surfaces. Once a force is imparted to
the vanes there would be no need for another offsetting force
as the original imparting of momentum into the vanes would be
the offsetting force. Thus the vanes can continue to spin.
I feel another factor allowing the radiometer vanes to
continue to spin is the oblique imparting of force on the
radiometer vanes is not "head on". As the force would be
applied at an oblique angle, this could be somewhat similar to
the tacking of a sail boat. The sail does not meet the wind
head on, but at an angle to gain energy to reach a point
upwind of the original position. I feel both the semi
independence of the rarefied gas molecules from the radiometer
vanes and the oblique angle of the application of force work
to ensure that the radiometer vanes can continue to spin (and
at rates of up to 2000 to 3000 rpm).
Before continuing, I wish to address a possible objection as
one might say the spinning of the vanes could drive the re-
circulation patterns. Yet, in support of slip effects driving
both the rotation of the radiometer vanes and the re-
circulation of cooled molecules would be William Crookes'
original observations (before inventing the radiometer).
Crookes found on weighing objects in a partial vacuum that the
rarefied gas reactions initially took place on objects which
were not free to rotate. (2)
I feel the key to the following testing of the mechanical
properties taking place in the radiometer is that the equal
and opposite reactions of physics would be satisfied by this
direct imparting of momentum into the vane edges as the
offsetting force to the slip effects exerted by the energized
gas molecules. No other off setting force would be present to
impede the spinning vanes (except a little back pressure from
the rarefied gas atmosphere itself).
In effect, I feel the implication of the spinning vanes of the
radiometer could be a simple "engine" in which the molecular
momentum of the rarefied gas molecules would be converted
directly into the momentum of the radiometer vanes.
The premise for the following proposed testing is if a force
can be exerted on the radiometer vane edges via slip effects
then a similar force could be exerted on attached "surfaces"
in a closed cylinder of rarefied gases to likewise cause the
propulsion of a body.
(Please refer also to the following diagram.)
In the radiometer and in the testing I note once the rarefied
gas molecules impart momentum into the vanes via the vane
edges that the gas molecules, in losing energy, would
become cooled in this process and could represent the
"exhaust" side of such a simple engine.
In the wider spacing of the rarefied gas molecules, as
compared to a full atmosphere, I feel it is likely that heated
and cooled molecules could exist in closer proximity to one
another for the re-circulation of cooled molecules back on to
the heated, non reflective surface. In the radiometer and in
the testing ample spacing appears available for the re-
circulation of the rarefied gases.
Initial Testing
The initial testing is to take place at room temperature in a
partial vacuum with similar rarefied gases as the radiometer.
The testing is to be preformed by experienced persons with a
knowledge of vacuum safety considerations. In determining the
most effective surface, say a 12 X 12 cm "surface" of similar
composition as the radiometer vanes can be used. This
surface is to be tested with varying proportions of openings
to allow slip effects to take place. The most effective shape
and size of the openings for slip effects can then be
determined.
In the initial testing the surface can be mounted vertically
with gussets in each corner for wire guides. I would
anticipate in a similar rarefied gas environment, similar slip
effects around the edges of the openings in the surface.
Hence in response to a light beam applied perpendicularly on
to the non reflective side, the surface should likewise be
propelled along the wire guides and away from the light
source. I feel such an initial verification would demonstrate
the non rotational nature of the slip effects and would also
demonstrate, as in the spinning radiometer vanes, that no
additional offsetting force would be present to stop the
forward propulsion of the surface.
The force/power generated on the surface under varying light
intensities could also be calculated to determine if
sufficient power could be generated to run the following
closed cylinder test in the open air, under a full atmospheric
pressure.
Other notes for the testing
1. The openings in the surfaces for slip effects should be of
sufficient size to allow for circulation of de-energized,
cooled gas molecules back through the openings. (Note: it is
likely without the crowding effects of a full atmosphere that
cooled and energized molecules could be in closer proximity
for such re-circulation patterns.)
2. The maximum distance between openings in the surfaces could
be compared as to when slip effects become impeded. Also how
close could a holed surface be in proximity to a fixed, solid
surface before slip effects would become impeded.
3. Although not necessary in the testing, a thicker insulation
material could be used and a non reflective material applied
to both sides of the surfaces. I feel if light or radiant
energy would be applied directionally to one side and kept
away from the opposite side that slip effects could still be
maintained. Thus it could be possible to reverse direction of
movement by reversing the direction of the energy source.
4. Although self evident in the radiometer and in the test,
the vanes and the surfaces are to be free to move in response
to the application of force/power. Too much mass or inertia
would result in heating of the surfaces without power being
inputed into the momentum of the vanes or into the surfaces.
(The energy would instead be transferred to molecular motion.)
In the test the surfaces, which are attached within a light
weight, closed cylinder, would still be free to move, though
not individually, but as a unit with the closed cylinder.
In continuing to the test I note the radiometer vanes do not
rotate if a full atmosphere were present due to the crowding
effects of the gas molecules. Yet this would not preclude the
possibility, with sufficient force generated internally by a
partial vacuum of rarefied gases acting on attached surfaces
in a closed cylinder, that such a closed cylinder might be
able to develop sufficient power to be propelled in the open
air under a full, external atmosphere.
My radiometer after allowing for up to 50% space surrounding
the vanes for slip effects and re-circulation patterns gave
an incipient, low end figure of approximately 0.1 gram/sq cm
which could be accelerated on applying a weak light beam on to
a vane surface. (This figure was derived upon breaking the
radiometer to weigh the vanes and mounting harness.) Thus I
feel at a strong light intensity it could be possible to
generate substantially more power.
In the following test the force generated could be increased
as solar energy would constantly strike the surfaces. Also
less back pressure from the rarefied atmosphere itself could
result on the attached surfaces as compared to the rotating
radiometer vanes.
Hence my hunch is sufficient force/power might be generated to
propel such a closed cylinder in the open under a full
atmosphere. (And if so, this would facilitate the design of a
simple test vehicle which could be made readily available in
the physics classroom to further demonstrate the mechanical
properties taking place in the radiometer.
The following, basic test, is to be in a vacuum chamber in
which the rarefied gas pressure would be equalized between the
rarefied gases within a closed cylinder and with the external
rarefied gas pressure in the vacuum chamber. This would allow
the use of a very light weight, thin skinned, closed cylinder
in the following test.
(Note: if sufficient force/power could be generated this test
could also be demonstrated in the open air with a thick
walled, substantially heavier closed cylinder.)
The test is to take place at room temperature using a strong,
light weight, transparent closed cylinder of say 11+/- cm in
diameter and 27+/- cm in length. (Actual size to be determined
by safety and weight factors.) The rarefied gases are to be
similar to the radiometer. A series of 5 circular, holed
surfaces with a diameter of 10 cm each and of similar
materials as the radiometer vanes can be mounted perpendicular
in the cylinder on a spacing of say 5+/- cm to give a total
force generating area of about 400 sq cm. This would include
both solid areas and up to 50% openings as necessary in the
holed surfaces for slip effects. (I have not counted the
additional 0.5 cm space around each surface edge and the
cylinder wall for additional slip effects).
The 5 cm spacing between the surfaces should be sufficient to
allow light or radiant energy to strike the non reflective
side of the surfaces.
(Note: as slip effects would be a function of heating the non
reflective surfaces, it would not be necessary for the light
to strike the surfaces head on. Rather a strong light beam
from a high, oblique angle could be used.)
The closed cylinder can be mounted on low friction wheels or
on skids on a low friction surface.
Although the force/power generated may be small, upon applying
light or radiant energy on to the non reflective side of the
surfaces, I feel the mechanical properties which could likely
be demonstrated in this test in a vacuum chamber could be:
1. In contrast to the spinning vanes of the radiometer, it
would be the closed cylinder to which the force would be
directed. As the force would be applied directly on to the
edges of the attached surfaces, there would be no moving parts
except the rarefied gas molecules and the cylinder or "engine"
itself. In this mechanical simplification, the closed cylinder
would become both the "piston" and the "drive train".
(Note: this property derives from what could be the key aspect
of the mechanics taking place in the radiometer - the direct
imparting of momentum into the attached surfaces as the
offsetting force to the slip effects of the energized gas
molecules - without a need for an additional off setting
force.)
2. The inertia of the closed cylinder would be the base for
propulsive force. The force/power generated on the edges of
the cylinder "surfaces" would be directed against the
cylinder's inertia via the attached surfaces as the base for
the acceleration of the closed cylinder. The closed cylinder
will thus be propelled without the need of external surfaces
for traction.
3. As in the force exerted on the radiometer vanes, only the
input of energy would be necessary to recharge and reuse the
rarefied gases in exerting a force on the "surfaces" of the
closed cylinder. In this property of reusing and recharging
the "propellent", the propulsion of the closed cylinder would
discharge no external exhaust gas. (End)
References
1. "How Does A Light-Mill Work?, Updated 6/12/97 by PEG,
original by Philip Gibbs 7/2/96. (on the internet.)
2. Dictionary of Scientific Biography. V.III,1974, pgs 476-7.
A Speculation
Although the force exerted in the radiometer may be small, I
feel if these mechanical properties could be made available as
within that which could be possible, perhaps other medium
besides rarefied gases could be found to apply such properties
to create a new class of engines.
Other
In a paper I am writing, titled "An Accelerative Universe",
the confirmation of these properties would give me grounds to
postulate that an unknown form of acceleration could be taking
place in galaxies to cause the accelerative expansion of the
universe.
Free Use
The originality of my ideas in my paper, "A Test to
Demonstrate the Unique Mechanical Properties Taking Place in
the Radiometer", including my ideas previously shared with
others, is given to the public domain to be freely used. (I
would though appreciate a credit for my work.)
Copyright 2001/2002. Permission is given to make limited
copies for distribution to those who would be interested.
8/4/2002
lance@pon.net