Home

MarketPlace

The TECTechnics Classroom

The Law Of Reflection Of Light


Overview

TECians Login

Strings (SiPjAjk) = S7P4A41     Base Sequence = 12735     String Sequence = 12735 - 4 - 41

Expressions Of Pj Problems
The Law Of Reflection Of Light
Math

Pj Problems - Overview
Celestial Stars
The Number Line
Geometries
7 Spaces Of Interest - Overview
Triadic Unit Mesh
Creation
The Atom
Survival
Energy
Light
Heat
Sound
Music
Language
Stories
Work
States Of Matter
Buoyancy
Nuclear Reactions
Molecular Shapes
Electron Configurations
Chemical Bonds
Energy Conversion
Chemical Reactions
Electromagnetism
Continuity
Growth
Human-cells
Proteins
Nucleic Acids
COHN - Natures Engineering Of The Human Body
The Human-Body Systems
Vision
Walking
Behaviors
Sensors Sensings
Beauty
Faith, Love, Charity
Photosynthesis
Weather
Systems
Algorithms
Tools
Networks
Search
Differential Calculus
Antiderivative
Integral Calculus
Economies
Inflation
Markets
Money Supply
Painting

Law Of Reflection Of Light

The ray model of light is an established simple assumption about the motion of light in the macro-realm (non-quantum realm). The ray model of light assumes that light travels in straight-line paths; light rays from luminous objects spread out in all directions and an image is formed when the light rays leaving the object from the same point meet. The ray model of light does not disrupt the particle-wave nature of light.

(a) Prove the law of reflection of light which states that the angle of incidence of a ray of light is equal to the angle of reflection.
(b) Indicate the position of the mirror image of a point O (figure 21.1) which is in front of a plane mirror.

The strings:

S7P4A41 (Motion - Linear).

The math:
Pj Problem of Interest is of type motion (linear). The ray model of light implies linear motion of light.

Law Of Reflection Of Light


(a) Consider figure 21.1. OM is the light ray, KQ the reflecting surface, MO' the reflected ray and PM is a the normal to KQ.
Construct PO' such that PO' is parallel and equal to MO. Construct OP such that OP is parallel and equal to MO'.
So, OMO'P is a parallelogram and PM one of its diagonal.
So, <1 = <2 (bisection of angle by diagonal)
So, <4 = <3. since PM is perpendicular to KQ.
Generally, <4 is considered to be the angle of incidence of the light ray OM while < 3 is considered to be the angle of reflection of the reflected ray. Some choose <1 as the angle of incidence and <2 as the angle of reflection. No difference. It depends on the reference line (normal or horizontal).
So, angle of incidence = angle of reflection. Euclid is credited with the discovery of this law of reflection of light.

(b) The mirror image of O is on a perpendicular from O to the mirror KQ and as far behind the mirror as O is in front (figure 21.1).
So, the image of O is at N, where OL = LN.

The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
Single Variable Functions
Conics
Ordinary Differential Equations (ODEs)
Vector Spaces
Real Numbers
Separation Of Variables As Solution Method For Homogeneous Heat Flow Equation
Newton And Fourier Cooling Laws Applied To Heat Flow Boundary Conditions
Fourier Series
Derivation Of Heat Equation For A One-Dimensional Heat Flow


The Universe is composed of matter and radiant energy. Matter is any kind of mass-energy that moves with velocities less than the velocity of light. Radiant energy is any kind of mass-energy that moves with the velocity of light.
Periodic Table
Composition And Structure Of Matter
How Matter Gets Composed
How Matter Gets Composed (2)
Molecular Structure Of Matter
Molecular Shapes: Bond Length, Bond Angle
Molecular Shapes: Valence Shell Electron Pair Repulsion
Molecular Shapes: Orbital Hybridization
Molecular Shapes: Sigma Bonds Pi Bonds
Molecular Shapes: Non ABn Molecules
Molecular Orbital Theory
More Pj Problem Strings

What is Time?
St Augustine On Time
Bergson On Time
Heidegger On Time
Kant On Time
Sagay On Time
What is Space?
Newton On Space
Space Governance
Leaders
Imperfect Leaders
Essence Of Mathematics
Toolness Of Mathematics
The Number Line
Variables
Equations
Functions
The Windflower Saga
Who Am I?
Primordial Equilibrium
Primordial Care
Force Of Being
Forgiveness

Blessed are they that have not seen, and yet have believed. John 20:29

TECTechnic Logo, Kimberlee J. Benart | © 2018 | All rights reserved | Founder and Site Programmer, Peter O. Sagay.