(1)Suppose a ray from a point light source hits a surface at a point p whosenormal vector is Ñ. Let L be the unit vector from p toward the light source.Describe R, the unit vector at p in the direction of ideal specular reflection ofthe ray, in terms of Ñ and L.Continuing the previous question, let V be the unit vector at p toward(2)the viewer. Express the intensity of specular reflection in the Phong model interms ofL, Ñ‚, and/or R,V,specular light intensity I,• specular-reflection constant k, andspecular-reflection exponent a,and explain what visible effect a has and why.

Answered: Suppose a ray from a point light source…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

(1)
Suppose a ray from a point light source hits a surface at a point p whose
normal vector is Ñ. Let L be the unit vector from p toward the light source.
Describe R, the unit vector at p in the direction of ideal specular reflection of
the ray, in terms of Ñ and L.
Continuing the previous question, let V be the unit vector at p toward
(2)
the viewer. Express the intensity of specular reflection in the Phong model in
terms of
L, Ñ‚, and/or R,
V,
specular light intensity I,
• specular-reflection constant k, and
specular-reflection exponent a,
and explain what visible effect a has and why.

Expert Solution

Step 1

Given :

(Note : Given is a multiple type of question. So answer for the first question is providing below. Please post the next question as aspirated one. Thank you).

The normal vector at point p of incidence = N

The unit vector from point p to the light source = L

The unit vector from the point p through the direction of specular reflection = R

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