GELE Geodesy — The Geoid, Gravity and HeightsSlides
Slide library for The Geoid, Gravity and Heights. Every GELE Geodesy concept in this chapter, broken into bite-sized slides that are easy to scan on mobile. Built around Professional Regulation Commission (PRC) — Board of Geodetic Engineering's recent question patterns for the GELE 2026.
Exam context
Professional Regulation Commission (PRC) — Board of Geodetic Engineering runs the Geodetic Engineer Licensure Examination on September 2026. Its Geodesy section sits under a "Core" weighting, and The Geoid, Gravity and Heights is the 5th chapter in the 6-chapter GELE Geodesy rotation. The GELE passing mark is 70% weighted average, no sub-test below 50%, and the most recent 2026 paper drew about a meaningful share of questions from Geodesy.
The Geoid, Gravity and Heights - Slides
Slides
Introduction: The Three Surfaces in Geodesy
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S1
The Geoid: Definition and Physical Significance
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S2
Ellipsoidal vs. Orthometric vs. Geoidal Heights
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S3
The Fundamental Equation: h = H + N
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S4
Why GNSS Height ≠ Engineering Elevation
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S5
Gravity and Its Variation
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S6
The Free-Air Correction and Bouguer Reduction
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S7
Geopotential Numbers and Dynamic Heights
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S8
Worked Example 1: Converting GNSS to Orthometric Height
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S9
Worked Example 2: Finding Geoid Undulation from Survey Data
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S10
Worked Example 3: Height Conversion for Engineering Design
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S11
The Philippine Reference System (PRS92) and the Geoid
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S12
Geoid Undulation Variations Across the Philippines
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S13
Common Errors and How to Avoid Them
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S14
Summary: Key Formulas and Concepts
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S15
Practice Problems for Board Exam Preparation
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S16
Legislation and Professional Standards (Philippines)
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S17
Chapter Conclusion and Key Takeaways
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S18
Stored In
chapter_slides
Slide Count
18
Summary Only
true
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