Question: What becomes of light that that is projected into a gravity well?
About the article "General relativity", section "Gravitational time dilation and frequency shift".

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A faster-than-light device called the "Stutterwarp Drive" allows mankind to achieve practical travel between planetary systems.
Ships can usually reach a speed of 3.5 light years per day; the real limitation of the Stutterwarp drive is that it can only propel a ship up to a maximum of 7.7 light years before it needs to enter a gravity well and discharge lethal radiation that would otherwise kill the crew.
Because ships need to reach a world within this distance, the effect of this limitation is the creation of lanes along which travel and commerce are conducted and along which wars are fought, the Arms mentioned above.
Overall, the technological level of "2300 AD" is not terribly more advanced than the modern day.
What is depicted refines or updates currently used technology, with occasional instances of breakthroughs predicted by modern science.
The "wonder-tech" of space opera is deliberately absent (with the notable exception of FTL).
For example, most personal combat is still conducted with guns firing chemically projected rounds even though energy weapons do exist.
Also, no sort of gravity manipulation exists, so spaceships must be built to account for micro-gravity conditions and transferring from space to a planetary surface (or vice versa) is still expensive.
The properties and limitations of the Stutterwarp drive and all other technologies are defined in considerable detail, to prevent the use of technological deus-ex-machina to resolve intractable situations. 
 process.
The stereoplotter requires two photographs that have considerable overlap (60%) and are corrected for distortion due to angle of photo.
The photos are put onto transparent media and projected with a light source.
Each image will be projected with overlap on the other.
The operator, using a special set of optics, would then see the image as three-dimensional due to the differing perspective of each photo.
The optics of the stereoplotter is what allows the operator to plot the contours and features.
The light source used to project the photo is what begins the process.
One photo is projected using cyan/blue filter and the other photo is projected with a red filter.
The operator wears a special set of glasses that have the same color filter for lenses.
Seeing the left photo in blue light while the left eye has the blue filter and the right photo projected with red light and the right eye seeing through the red filter, the overlapping image becomes three-dimensional.
The images will have control points that detail how the overlap of the photos should occur.
The resultant overlapping image is called an anaglyph and is a three-dimensional model of the terrain.
Once the two photos are projected and the desired control points aligned the operator will then start to record the desired elevations on the terrain by "flying" a light spot along the contours.
If the light spot appears to hover above the terrain or appears to dive into the terrain, the operator knows that he has moved it too far away from a slope or too far toward a slope, respectively.
Originally, stereoplotters recorded the path of the flying light spot by directly scribing the path on a sheet of acetate or polyester coated with an opaque lacquer, which could be photographed to make the topographic map printing plates.
If mistakes were made during contour tracing, the operator would daub some lacquer on the incorrect trace, allow it to dry and then try flying the light spot again.
Current systems that use digital capture techniques allow simple erasure of part of the faulty data vector in computer memory, whereupon digitizing can resume.
The digital database is then combined in a graphics program with annotations and symbols, ultimately being used to produce the map printing plates with a photoplotter.
The stereoplotter serves an important need of allowing aerial photos to become the base for contours and elevation maps.
In the United States the largest use of topographic maps is the United States Geological Survey (USGS).
The USGS has cataloged all of the territory of the United States and has produced topographic sheets for all of it.
The sheets are most often used as 7.5' maps.
This means there is 7.5' (0.125 degree) latitude by 7.5' (0.125 degree) longitude. 
In many science fiction stories, there are artificial gravity generators that create a gravitational field based on a mass that does not exist.
It helps the story by creating a more Earth-like spaceship, and in the case of a movie or television program, it helps the production because it is a lot cheaper than the special effects needed to simulate weightlessness.
In the "Star Trek" universe, artificial gravity is achieved by the use of "gravity plating" embedded in a starship's deck.
In the "" episode "In a Mirror, Darkly", the gravity plating of the USS "Defiant" is used to fend off a Gorn attack by greatly increasing the ship's gravity in one section.
The Gorn attacker was forced down to the floor and immobilized, where The "Mirror" Jonathan Archer easily killed him.
Benjamin Sisko once built a replica of an ancient Bajoran solar-sailer spacecraft.
As these craft were not normally equipped with artificial gravity, Sisko added gravity plating to make it easier for him and Jake to pilot the vessel.
("" episode "Explorers") Star Trek novels more specifically explain the specifics of artificial gravity technology.
It is often explained as making use of virtual gravitons In Gene Roddenberry's "Andromeda", set thousands of years in the future, gravity field generators not only provide gravity for the people inside the ship, but also reduce inertial mass of ships such as the "Andromeda Ascendant" to just under a kilogram.
This greatly increases the efficiency of their Magneto-Plasma Dynamic Drive, allowing them to go from a stop to percentages of light speed very quickly.
It can also be easily manipulated to do things like increase gravity and immobilize intruders (though prepared intruders can use an antigravity harness to prepare for this possibility), and reversed to expel things from the ship.
In the anime "Dragon Ball Z", gravity simulation plays a key part in various character's training regime.
It is also used to demonstrate the character's increasing strength.
For example, when Goku first arrives on King Kai's planet, he is nearly crushed by the gravity, which is ten times that of Earth's.
By the end of his visit, nearly a year later, he is able to move at great speed under such conditions.
This method of training gradually appears more and more in the universe, and the gravity gets stronger as well.
Ten times Earth's gravity goes from a seemingly indomitable level of opposition to nothing, and several hundred times Earth's gravity becomes the standard.
Vegeta even had a Gravity Room built into his house.
In the "Doctor Who" story "The Sontaran Experiment", a Sontaran used similar technology to make a bar above a human very heavy, so that his friends had to lift it up with as much force as they could to prevent him being crushed.
The Sontaran gradually increased the bar's weight as part of an experiment to study not only their physical strength but also their loyalty, as their friend had recently attempted to betray them.
In the BioWare series "Mass Effect", the eponymous "mass effect" is responsible for the manipulation of gravity or kinetic forces(if the mass effect field is alternating), caused by subjecting a quantity of fictional "element zero" to an electrical current.
A negative current reduces the mass of anything within the field, a positive current increases mass, and an alternating current will create a barrier force of immense power that can shield or crush anything the force is directed at.
Mass effect is used in faster than light travel, artificial gravity on spacecraft, weapon technology, kinetic barriers and shields, and much more.
Individuals exposed to element zero are known as "biotics," the nodules of element zero embedded into their nervous systems allow them to use neural impulses to create mass effect fields themselves if the power of the element is amplified with a biotic amp, granting specific types of abilities such as certain types of telekinesis.
An individual exposed to this "eezo" would often rather cause cancer.
In the video game "Dead Space", artificial gravity plates are used to simulate an Earth-like environment in outer space.
In several levels, gravity plating is off and the player has to navigate in weightlessness using 'Zero-Gravity Boots', similar to magnetic boots.
Defective gravity plates are also encountered sometimes, which push objects upward rather than downward with great force, killing the player or enemies instantly if they step on them. 
Self-gravity has important implications in the field of seismology as well because the Earth is large enough that it can have elastic waves that are large enough to change the gravity within the Earth as the waves interact with large scale subsurface structures.
There are models made that depend on the use of the spectral element method and these simulations take into account the effects of self-gravitation because it can have a large influence on results for certain receiver-source configurations and creates complications in the wave equation, particularly for long period waves.
This kind of accuracy is critical in developing accurate 3-D crustal models in a spherical body (Earth) in the field of seismology, which allows for more accurate and higher quality interpretations to be drawn from data.
The influence of self-gravity (and gravity) alters the importance of Primary (P) and Secondary (S) waves in seismology because when gravity is not taken into account, the S wave becomes more dominant and as gravity is taken into account, the effects of the S wave become less significant.  
General relativity is a theory of the nature of time, space and gravity in which gravity is a curvature of space and time that results from the presence of matter or energy.
Energy and matter are equivalent (as expressed in the equation "E" = "mc"2), and space and time can be translated into equivalent units based on the speed of light ("c" in the "E" = "mc"2 equation).
A common analogy involves the way that a dip in a flat sheet of rubber, caused by a heavy object sitting on it, influences the path taken by small objects rolling nearby, causing them to deviate inward from the path they would have followed had the heavy object been absent.
Of course, in general relativity, both the small and large objects mutually influence the curvature of spacetime.
The attractive force of gravity created by matter is due to a negative curvature of spacetime, represented in the rubber sheet analogy by the negatively-curved (trumpet-bell-like) dip in the sheet.
A key feature of general relativity is that it describes gravity not as a conventional force like electromagnetism, but as a change in the geometry of spacetime that results from the presence of matter or energy.
The analogy used above describes the curvature of a two-dimensional space caused by gravity in general relativity in a three-dimensional superspace in which the third dimension corresponds to the effect of gravity.
A geometrical way of thinking about general relativity describes the effects of the gravity in the real world four-dimensional space geometrically by projecting that space into a five-dimensional superspace with the fifth dimension corresponding to the curvature in spacetime that is produced by gravity and gravity-like effects in general relativity.
As a result, in general relativity, the familiar Newtonian equation of gravity formula_3 (i.e.
gravitation pull between two objects equals the gravitational constant times the product of their masses divided by the square of the distance between them) is merely an approximation of the gravity-like effects seen in general relativity.
However this approximation becomes inaccurate in extreme physical situations.
For example, in general relativity, objects in motion have a slightly different gravitation effect than objects at rest.
Some of the differences between the familiar Newtonian equation of gravity and the predictions of general relativity flow from the fact that gravity in general relativity bends both time and space, not just space.
In normal circumstances, gravity bends time so slightly that the differences between Newtonian gravity and general relativity are impossible to detect without precise instruments.