In eRevollution, you play as a government, a country or a region and struggle for your objectives. . . eRevollution is a multiplayer economic strategy game that allows the player to play as a region or a country, or as a government.
Do not hesitate to tell us what you think about this game. You are welcome to our forums, where you can find fun and learn.The inventors of the present invention have been studying the development of a magneto-optical recording/reproducing apparatus of a so-called holography type, wherein optical information is recorded on a magnetic recording medium in the form of a pattern having a phase varying depending on the information, and the optical information is reproduced by reading the information as a change in the polarization state of a readout light.
As a magneto-optical recording medium used for the above-mentioned apparatus, there are known a system in which a magnetic film layer is provided on a glass substrate and a readout light is applied directly to the magnetic film layer, a system in which the magnetic film layer is provided on a light transmission substrate and a readout light is applied through a polarizing beam splitter, and a system in which the magnetic film layer is provided on a magnetic substrate and a readout light is applied through a polarizing beam splitter.
Recently, the above-mentioned apparatus of the holography type has been attracting attention as an information recording/reproducing apparatus for a high density recording of the order of Giga bits per square inch on a magneto-optical recording medium. This is because a large quantity of information can be recorded with a small amount of light and the apparatus is inexpensive.
In the case of recording and reproduction of optical information using a magneto-optical recording medium of the so-called holographic type, first of all, a pattern having a phase varying depending on the information is recorded on the recording medium. For this purpose, light of a suitable wavelength is emitted by a light source and the light is focused on the recording medium. Then, the recording medium is moved in the direction of a diameter of the focused light spot so as to scan the focused light spot on the recording medium. In this case, the light emitted from the light source is divided into two beams. One of the two beams is focused on the recording medium, while the other is focused on a beam splitter. The light reflected by the recording medium is detected by a light detector
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