| 1. | Likewise, spirit levels will always be parallel to the geoid.
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| 2. | Spherical harmonics are often used to approximate the shape of the geoid.
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| 3. | Geoid measures help thus to understand the internal structure of the planet.
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| 4. | Instead, the geoid of the earth is described by many ellipsoids.
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| 5. | Dynamic heights are usually chosen so that zero corresponds to the geoid.
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| 6. | EGM96 differs from the original WGS 84 geoid, referred to as EGM84.
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| 7. | VDs are used in astro-geodetic levelling, a geoid determination technique.
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| 8. | The geoid is essentially the figure of the Earth abstracted from its topographical features.
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| 9. | As geoid knowledge accumulates, one may expect use of GPS heighting to spread.
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| 10. | The geoid is a particular equipotential surface, and is somewhat involved to compute.
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