Click below for a 350 KB pdf document of a heat-based gravity theory that was submitted to the April 2007 Gravity Research Foundation competition
Below are a number experiments that support the notion that the radial spreading infrared luminosity is gravitationally attractive.
Figure 1. One thousand watts of heat was applied from below to a solid cone made of tightly packed
aluminum foil for 1000 s. A 1.2% or a 0.13 N increase in weight was observed. This force
change is unambiguously attractive i.e. the direction of the force is toward the literal source
of infrared luminosity.
Figure 5 Here is a 9% increase in weight.
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The notion of gravitationally attractive infrared radiation provides a very simple solution to the dark energy problem
Below is graph showing th dimming of the universe. Notice that generally speaking the star formation rate begins to decline around z = 1. From Panter et al. 2006.
Below is a graph showing the acceleration of the universe. Roughly speaking the universe starts to accelerate around z = 1.
There are three independent indications that spreading infrared luminosity is gravitationally attractive
1 The hot gaseous cloud lying between the two clusters of Abel 560 that is devoid galaxies has produced the most gravitational lensing. This cloud emits hot radially spreading infrared radiation. But this may be just another dark matter puzzle and is not indicative of infrared radiation being able to gravitationally bend light. In 1919 it was the mass of the sun that bent the star light in the famous solar eclipse study that substantiated General Relativity. It was not the hot radially spreading radiation from the sun that bent the star light.
The Tully Fisher law that can be applied to billions and billions of the galaxies may explicitly state that a galaxy's luminosity is proportional to its highest orbital velocity. But this does not mean that the former causes the later.
My five above experiments that demonstrate that once the lights or heating elements are turned on, the suspended aluminum hemispheres begin to increase in weight, do not conclusively show that the radial spreading of infrared radiation is gravitationally attractive. These experiments have not been replicated by some else and therefore they are suspect.
Now we have this near simultaneous occurrence of the dimming of the universe and its acceleration. We can not take the (1) the Abel 560 gravitational lensing of gas finding, (2) the ubiquitous thoroughly researched Tully Fisher relation and (3) the results of my five above experiments and conclude the universe has become less gravitationally bound at around z=1 because the mean light output of the galaxies began to decrease.
If we did this we would have to take the points (1), (2) and (3) more seriously. Furthermore, it would provide a very simple solution to the dark energy problem. Why have a simple solution to the dark energy problem when there are all those complicated problems out there that are based on that mysterious, yet-to-be-defined property of mass that gives it the ability to either warp space or attract mass.