Menu (linked Index) Vector Math Last Update: June 20, 2025 Introduction Vectors and Scalars Vector Addition Vector Subtraction Vector Multiplication by a Scalar Length (Magnitude) of a Vector Vector Dot Product Vector Cross Product Introduction Vectors are mathematical constructs that indicate magnitude and time. They are very useful in science and engineering fields. In this […]
Menu (Linked Index) SI Base and Derived Units Charts and Tables In this post, I present tabulations of the various SI Base Units and the other units (quantities) derived from these units. I also show a tabulation of common SI prefixes. Published: June 20, 2025 SI Base Units Table Select SI Derived Quantities Table Full
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SI Base Units SI (International System of Units) defines seven base units which are meter kilogram second ampere kelvin mole candela The definition of the mole, alongside redefinitions of the kilogram, ampere, and kelvin (and candela) were formally approved by the General Conference on Weights and Measures (CGPM) on November 16, 2018, and officially took
Menu (linked Index) A Listing of Key Events in Electricity and Magnetism Last Update: June 5, 2025 Introduction Recognizing Michael Faraday Recognizing James Clerk Maxwell Chronological Listing of key events and milestones in Electricity and Magnetism Introduction to Chronology of Events in Electricity and Magnetism This post tabulates significant milestones and events in our understanding
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Menu (linked Index) Understanding Your Eyes – A Guide to Anatomy, Vision, and Correction Last Update: January 10, 2025 Introduction Eye Anatomy Light to Vision Pathway Physics of the Eyes Vision Impairment and Correction Introduction In the book “The Auto Biography of Malcolm X” , Malcolm writes……”I would just like to study. I mean ranging
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Introduction Electro-Magnetic Radiation Last Update: October 20, 2024 This post is a brief refresher on Electro-Magnetic Radiation (i.e. light). See my other posts where light plays a critical role. A Color Primer (Including How to Create an Effective Colour Palette) Find more links related to my eye research here: Understand Your Eyes. Electro-Magnetic Radiation The
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Menu (linked Index) Refractive Geometric Optics Last Update: December 26, 2024 Introduction Optics Defined Ray Theory The Law of Refraction Why Light Slows Down Lenses Convex and Concave Lenses Ray Diagrams Ray Diagrams (Converging Lens) Ray Diagrams (Diverging Lens) The Eye acts as a Converging Lens Lens Magnification Equation Thin Lens Equation Lens Maker’s Formula
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Menu (linked Index) Lens Ray Diagrams Last Update: October 21, 2024 Introduction Convex and Concave Lens Basics Ray Diagram Drawing Rules Convex and Concave Lens Ray Diagram (O>2F) Convex and Concave Lens Ray Diagram (O=2F) Convex and Concave Lens Ray Diagram (2F>O>F) Convex and Concave Lens Ray Diagram (O=F) Convex and Concave Lens Ray Diagram
Menu (linked Index) Lens Equations Last Update: October 21, 2024 Introduction Symmetrical Concave and Convex Lens Using Ray Diagrams to Determine the Lens Equations Lens Magnification Equation Thin Lens Equation Curved Surface Refraction Equation Derivation Lens Maker’s Equation Introduction In this post we’ll derive the following key lens equations: The Lens Magnification Equation The Thin
Introduction Snell’s Law (Law of Refraction) Example Last Update: October 20, 2024 This post provides an example of how to compute refracted light angles using Snell’s Law. Refer to my post Refractive Geometric Optics for more on Snell’s Law. Also, Find more links related to my eye research here: Understand Your Eyes. Return to Menu Snell’s
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