Following my arguments mentioned in the EMRP theory section, you can read that the 'darkness' of the shadowing effect of radiation pressure depends on the density of the mass responsible for the shadowing effect. As with everything in the universe it should have an upper boundary limit, which should define a total darkness. When the mass per unit cross sectional area is increased over the point of total shadowing, there will be no increase in radiation pressure over that area. This means that radiation pressure has an upper limit and once this limit is reached, weight is no longer proportional to the volume but is proportional to projected shadow area. In such case mass is no longer the product of density and volume, but density and cross sectional area! This means that if we have a disk shaped up of a material so dense as to be able to cast a totally black shadow, the radiation pressure (gravity) on its face will be the same as that of an infinitely long cylinder of the same material and of the same cross sectional area.
It also means that if an object under test is completely shadowed by a dense mass, the gravitational attraction in the direction of this shadowing mass cannot be increased further, and any other masses behind the shadowing mass will not apply any further gravitational force to the object. This is contrary to Newton's law of gravity, which states that each body has to contribute a gravitational PULLING force to the object.
The above test setup has been suggested by Ian R.M. Chaston (UK) who was surprised to see that EMRP could in fact provide a strong theoretical support to explain the discrepancies he found out when he was studying planetary specific gravity in the late 1960s, in which he could not credit the values produced by Newtons theory using the whole bulk volume of the planets. Instead it seemed to Ian and also a few other researchers, that the figures could only make sense if calculated using the cross-sectional area of the planets which suggested that gravity was a result of radiation pressure and not some magical attraction.
The aim of this experiment is to show an attenuation in measured gravitational forces, as predicted by EMRP and which are not taken into account in neither Newton's nor Einstein's theory of gravity. The proposed experiment is preferably to be set up on an inter-Tropic spot, so that the line joining the moon to the object passes through the central core of the earth, but could also give obvious results in most parts of the globe, depending on the density distribution of the earth's core. The gravity measuring system required for this experiment, in order to give steadily reproducable results, must have an accuracy in the range of +/- 0.01 mgal. This means that sophisticated measuring instruments have to be employed, but such gravity measuring instruments are readily available on the market.
As shown above, we may be lucky enough to live on a planet that is big and
dense enough to have a small central core which totally blocks gravitational radiation, with its density approaching the maximum mass per unit area value at which total shadowing occurs. The radius of this high density core is smaller than the earth's radius and is not known before this experiment is conducted. I expect the radius of this blocking core to be comparable or equal to the known Schwarzschild radius for earth, which is less than one centimetre.
If the moon is on the opposite side of the Earth to the measuring point then the mass of the Moon would not have any effect on the gravity being measured at some spot on the surface of the Earth because it would be totally shielded by this total shadowing core. Newtonian theory says that the mass of the moon would be added to that of the Earth in determining gravity at a point on the surface in such circumstances.
Through a day and a night, the variation in g due to the moon should vary in a sine wave fashion as shown, if Newton is right or if the Earth is fully translucent to the radiation.
If the Earth is not completely translucent to the gravitational radiation, and has a core reaching the limit DENSARE value, as most probably is the case, then the variation in g due to the Moon will not follow a complete sine wave, but shall be clipped off, as if the moon is no longer in orbit while passing on the opposite point. If the experimental readings result in such clipping (n=0 for total shadowing) or at least attenuated (n<1 for attenuated EM pressure) then, Newton's law of gravity PULL will have once and for all been proved wrong, in favour to the radiation pressure concept. Another important difference between Newton's and EMRP gravity is the failure of the superposition theory of force fields. Mainstream science states that gravity obeys the superposition theory, except for known anomalies close to black holes. EMRP clearly contradicts the superposition theory, and predicts the mentioned effect that we presently call an anomaly.
Since I do not have the required instruments to test this theory I highly suggest that anyone who has got access to such instruments try out this experiment, as it would surely finally shed light on the nature of gravity.
Update 2/4/07 : Gravimeter's data confirms EMRP predictions proposed above
Five years have passed from the time I have discussed the special effects one would expect from EMRP gravity theory. Following the suggestion of Ian R.M. Chaston I had setup this page in hope someone, someday would have access to the right equipment to prove me right, and Newton wrong. To my great surprise, after 5 years waiting, I have been contacted by Glen F.Perry, who had access to the Potsdam Super-conducting gravimeter data logs, and who had already used this data to study the 40 minute periodic gravitational pulse train emenating from the sun. This data log offers to us exactly what we were waiting for, the only difference being that the massive 'test' body is now our sun instead of our original proposed moon. That's even better!
The superconducting gravimeter consists of a spherical test mass loosely suspended by a very stable magnetic field, generated by superconducting field coils. This sensing unit is enclosed a liquid Helium dewar at a temperature of just 4.2 Kelvin electronically controlled to a few uK. The reading is taken fron the feedback loop used to hold the sphere test mass in its zero position, hence a highly accurate voltage, linearly proportional to the gravitational variation is obtained. Its resolution is in the nanogal range.
To his surprise, the gravitational pulse train which was logged throughout day and night for a number of days, seemed to sharply decrease in amplitude as the sun lines up the earth's core. The superconducting gravimeter is located at Potsdam in the state of Brandenburg, Germany. Maximum attenuation of the sun's gravitational pulse train occurs for the position in which the earth's core creates its maximum shadowing effect between the line connecting the sun and the gravimeter. This occurs with no exception on every midnight. Even though the gravimeter was not located on the equator region, the resulting shadowing is so obvious that it defies both Newton's and Einstein's predictions for such a variation, at first glance. The only predicted change using these theories is that due to the gravitational force reduction of the test object being farther away from the Sun at night than it is during the day, by the diameter of the Earth, however the magnitude of this effect is by far less than what the gravimeter's data shows. The strength of the 40 minute signal gradually fell off from June to December, approximately in line with the sine of the angle to the Sun over these six months, as predicted by an earth shadowing effect. Below is a graph from Glen's work which clearly shows the attenuation of the sun's gravitational pulse train logged for 40 minutes every two hours. You can notice that the graph plotted for hour 0:00 shows maximum shielding of this pulse train for a period not less than 40 minutes.
Below are the same graphs showing only the logged data from 8pm to 4am.
We now have access to lots of gravimeter data from all around the world. A joint effort called GGP-ISDC has entered it into data sets, covering 31 gravimeters, with the data available by minute. To access this data, sign up and register for free here