# Ppt on reflection of light for class 8

##### Teaching Optics Topics in College Physics Laboratory Roman Ya. Kezerashvili New York City College of Technology The City University of New York Winter.

presented at the laboratory class in the second semester of College and University Physics courses to study properties of light. The study of light can be organized into three domains: geometric optics, wave optics and quantum optics. These domains are not strictly disjoint. In the sets of experiments for the first domain students study the laws of reflection and refraction of light by measuring the dependence of the angles of reflection and refraction on the/

##### To observe the various phenomena of light

access. Label lasers with appropriate Class III danger statements and placard /of Light & Index of Refraction Snell’s Law Total Internal Reflection Refraction of Prism Angle of Minimum Deviation of Prism --Provides a good way to measure the index of refraction of a material. Applications of Prism A refracting prism is a convenient geometry to illustrate dispersion and The use of the angle of minimum deviation provides a good way to measure the index of refraction of a material. Reflecting prisms are used for/

##### Announcements 11/18/11 Prayer Labs 8, 9 due tomorrow Lab 10 due Tuesday Exam 3 review session: Mon 5-6 pm, room ??? (I’ll tell you on Monday) Exam 3 starts.

a board? What if you have two light sources? pattern at infinity pattern at focus superimposed patterns at focus f board with hole Rayleigh: 2 nd peak at position of first minimum Rayleigh Criterion plotted vs (  D/ ) Mathematica “FindRoot” command:  D/ = 1.21967… (using sin    ) Shape of curve involves a “Bessel function” (wait for some future Physics/Math class) Rayleigh Criterion 3 slits, equally spaced/

) or ideal diffuse surfaces Use radiosity as a unit to describe light leaving the surface DHR is often called diffuse reflectance, or albedo for a Lambertian surface, BRDF is independent of angle, too. Useful fact: The ubiquitous pi again. Tell students that this derivation follows that a few slides back. Specular surfaces Another important class of surfaces is specular, or mirror-like. radiation arriving along a/

##### Reflection of Light Reflection and Refraction of Light Refraction of Light.

for Converging Lens If the object is located beyond 2F: If the object is located at 2F: If the object is located between 2F and F: If the object is located at F: If the object is located in front of F: Diverging Lens Image Formation Can only produce virtual images. Thanks to: http://www.bing.com/images/search?q=reflection+and+refraction+of+light/

##### Daily Work Organizer Tuesday Question of the Day: How do we know how far stars are from earth? Do Now: Is your intelligence something very basic about.

Homework: Corrections to first problem set Problems 6, 7, 8 Honors: + 9, 10 Fridays Homework: Corrections to first problem set Problems 6, 7, 8 Honors: + 9, 10 Problem 1 What happens to the surface of the road when it is wet? Why ? Water fills in crevices (bumps) creating a smooth surface for light to reflect upon Reflection on a smooth surface Headlight on a dry road Vocab/

##### CMSC 427: Computer Graphics David Jacobs. Today’s Class Whirlwind intro to graphics –What problems does graphics deal with? –Examples of leading edge.

of plant ecosystems: Oliver Deussen1 Pat Hanrahan2 Bernd Lintermann3 Radom´ır Mˇech4 Matt Pharr2 Przemyslaw Prusinkiewicz4 http://graphics.stanford.edu/papers/ecosys/ecosys.pdf 3D models - Generated The Walkthru Project http://www.cs.unc.edu/~walk/ Geometry – Projection, Visibility Lighting Modeling Lighting Reflectance Texture Shadows (visibility) Interreflections Lighting (from Debevec) Light/Homework due start of class. Due Thursday, late penalty of 10% if 24 hours late. 30% penalty if 11am next/

##### Lecture 1 The Principles of Microscopy

produced by a prism or a rainbow Properties of Light Refraction A Lens Refractive Index Numerical Aperture Resolution Aberrations Fluorescence Reflection and Refraction Snell’s Law: The angle of reflection (Ør) is equal to the angle of incidence (Øi) regardless of the surface material The angle of the transmitted beam (Øt) is dependent upon the composition of the material Transmitted (refracted)Beam Reflected Beam r t i Incident Beam n1/

##### Zhang & Liang, Computer Graphics Using Java 2D and 3D (c) 2007 Pearson Education, Inc. All rights reserved. 1 Chapter 9 Lighting and Texturing F To understand.

Inc. All rights reserved. 6 Light Classes Zhang & Liang, Computer Graphics Using Java 2D and 3D (c) 2007 Pearson Education, Inc. All rights reserved. 7 Properties of Lights F Lights can have a color associated /of an Appearance is set, it enables lighting for the object by default F Contains components to control the color contributed by different kinds of lighting –ambient, diffuse, specular –can also contain an emissive color component F Shininess coefficient affects specular reflection F Color target for/

##### Slide 1 t:/classes/BMS524/2002 lectures/524lect2.ppt © 1993-2007 J. Paul Robinson - Purdue University Cytometry Laboratories BMS 524 - “Introduction to.

Educational Materials at http://www.cyto.purdue.edu/class These slides are intended for use in a lecture series. Copies of the slides are distributed and students encouraged to /of incident light are reflected at the interface between two material of different RI Thickness of the material will alter the constructive or destructive interference patterns - increasing or decreasing certain wavelengths Optical filters can thus be created that “interfere” with the normal transmission of light Slide 22 t:/classes/

##### Course Requirements, Syllabus, and Review Topics by unit

for class – that means in your seat when the bell rings Be prepared for class with writing materials – pen and paper No hats or do-rags in class No electronics in class including cell phones Be respectful of others Absolutely no food in class What is needed for this class/ amount of insolation received-ash clouds block sun from reaching the surface. 7. Color and texture – light colors reflect, dark colors absorb. Rough surfaces absorb, smooth surfaces reflect. Topic 7-Weather Air mass- A large body of air /

##### 3D Computer Vision and Video Computing Review Midterm Review CSC I6716 Spring 2003 Zhigang Zhu, NAC 8/203A

aberration, radial distortion (*option) l Reflection and Illumination: color, lambertian and specular surfaces, Phong, BDRF (*option) n Sensing Light n Conversion to Digital Images n Sampling/class- topic 5) l Camera Calibration (2 – topic 6) l Stereo (2 – topic 7) l Motion (2 –topic 8) 3D Computer Vision and Video Computing 5. Camera Models n Geometric Projection of/ of the Projection Transformation Equation n Perspective Camera Model n Weak-Perspective Camera Model n Affine Camera Model n Camera Model for /

##### Core of Knowledge in Safe Use of Lasers & IPL’s in healthcare Mr John Saunderson, Consultant Medical Physicist.

light sources (Lasers also more useful for creating a concentrated point source) Intrabeam, specular reflections, diffuse reflections Intrabeam –directly shone into eye –if focussed by eye, 20  m spot on retina Intrabeam Viewing If beam larger than pupil only proportion of/Classes Video 2 Laser Device Classes & Hazards Class 1 Class 1M Class 2 Class 2M Class 3R Class 3B Class 4 Applies to device as a whole. MPE = Maximum permissible exposure Class/Sight? March 2000 (Issue 8) Two separate incidents reported /

##### 1 Amateur Radio FCC License Class A One-Day Technician-Class License Course Based on the 2014 - 2018 Question Pool Course Development - Saratoga Amateur.

. It features a very high angle of radiation and is better for communicating via a repeater B. It features a very high angle of radiation and is better for communicating via a repeater C. The 5/8 wavelength antenna completely eliminates distortion caused by reflected signals C. The 5/8 wavelength antenna completely eliminates distortion caused by reflected signals D. The 5/8 wavelength antenna offers a 10-times/

##### THE WHY’S & HOW’S OF THE PHENOMENON OF ELECTROMAGNETIC RADIATION.

4 OTHER FORMS OF ELECTROMAGNETIC RADIATION. Some of the light is always reflected. However, when a ray of light goes from a denser medium to a rarer medium, all the light will be reflected if the angle of incidence is greater than the critical angle. The critical angle is the angle of incidence for which the /= 4.0 cm do = 8.3 cm f = 15.2 cm hi/ho = - di/do hi /(4.0 cm) = - (-18.2 cm)/(8.3 cm) hi = - (4.0 cm) * (-18.2 cm)/(8.3 cm) hi = 8.8 cm http://www.glenbrook.k12.il.us/gbssci/phys/Class/refrn/u14l5f.html

##### OBJ 5 Series Circuits Series circuits are the type of circuits that most Christams tree lights have. If one bulb goes out, all the bulbs go out. Series.

colors of pigment, reflect the color you see. Light Objects can absorb light, reflect light, and allow light to pass through them. Objects can absorb light, reflect light, and allow light to pass through them. The type of matter in an object determines the amount of light it absorbs, reflects, and transmits. The type of matter in an object determines the amount of light it absorbs, reflects, and transmits. Opaque Objects that are opaque only absorbs and reflects light – no light passes/

##### S80 Laser Distance Sensors. S80 Highlights 2 models with measurement ranges up to 4000mm and 7000mm Retro-reflective models up to 20m and 100m 2 NPN or.

/°C Light SourceRed laser class 2 Time of response5ms (NORM); 1ms (FAST) Channel/Out 2 PNP or NPN; 4 – 20mA analog Setting3 push-buttons Indicators4-digit display + 5 LEDs HousingABS aluminium IP67 Dimensions34 x 73 x 90 (mm) ConnectionM12 8-pole rotating connector Other featuresSynchronization RS485 interface Delay 0.323.57 6 18 36 54 72 90 White Black Gray-scale d [m] Reflection [%] The/

##### 8 th Grade Science Final Exam Review. 1. What are the tests used to identify a mineral? Streak – color of a mineral’s powder. Fracture – splitting a mineral.

8 th Grade Science Final Exam Review 1. What are the tests used to identify a mineral? Streak – color of a mineral’s powder. Fracture – splitting a mineral apart unevenly. Cleavage – breaks evenly. Luster – describes how light is reflected from a mineral’s surface. Density – mass/ Chemical energy: ex. bonds are broken in your cells & release energy for your body to use 47. What does the law of conservation of energy state? When one form of energy is transformed to another, no energy is lost in the process. /

##### 1 LASER LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION.

mechanisms pump energy into the active medium by one or more of three basic methods; optical, electrical or chemical. 3.High Reflectance Mirror A mirror which reflects essentially 100% of the laser light. 4.Partially Transmissive Mirror A mirror which reflects less than 100% of the laser light and transmits the remainder. 6 Laser Components Gas lasers consist of a gas filled tube placed in the laser cavity. A/

##### 2 classes of waves compressiontransverse Wave Behavior  All waves will Reflect Refract Diffract Interfere.

wavelength Higher Dimensions  Standing waves are possible in two dimensions as well Quiz 6,7,8,and 9: Matching – Crude wave behavior descriptions A.Reflection B.Refraction C.Diffraction D.Interference 1.Bending when the medium changes 2.Bouncing off an / Doppler  Which graph of pressure amplitude vs. time is correct for a car passing by? Bonus material: Shock waves  If a source is moving faster than the speed of the wave, shock waves form. So what is light? Newton thought light was a particle because/

##### 11/15/11 Image-based Lighting Computational Photography Derek Hoiem, University of Illinois Many slides from Debevec, some from Efros T2.

of your project idea Project page write-up due on Dec 8 (11:59pm) – Similar to other projects, but with some more detail on how to do it – Can be in html or pdf – Store at url below or include a link from there http://.projects.cs.illinois.edu/cs498dwh/final/ Class/ tracing millions of rays for many inter-reflections Design choices – Ray paths: Light to camera vs. camera to light? – How many samples per pixel (avoid aliasing)? – How to sample diffuse reflections? – How many inter-reflections to allow?/

##### The Entire Science Skills Unit includes a… Four Part 2,400 Slide PowerPoint roadmap full of class activities, video links, red slide class notes, discussion.

P. Murphy #8.) What is wrong/for refraction when catching a fish. Copyright © 2010 Ryan P. Murphy Light can be bent by gravity. White Light Dispersion Wave reflection.Wave reflection. Copyright © 2010 Ryan P. Murphy Wave reflection.Wave reflection. –Reflection occurs when light or ocean waves change directions as a result of "bouncing off" a surface like a mirror. Copyright © 2010 Ryan P. Murphy Wave reflection.Wave reflection. –Reflection occurs when light/of class activities, video links, red slide class/

##### Radiation Protection Service Department of Wellbeing, Safety & Health KEYSTONE a level 1 training course: basic competency (for new users) 30th October.

.g. Exposure to specular reflections from a Class 4 visible laser may cause deep tissue burns or puncture the retina KEYSTONE Damage mechanisms (2/2) 25 Damage to the retina of the eye following exposure to a 40 mW HeNe laser Thermal damage: localised coagulation marks on the retina Thermo-acoustic damage: internal bleeding from the retina KEYSTONE Absorption of light by the eye: ultraviolet/

##### PHY132 Introduction to Physics II Class 5 – Outline: Ch. 23, sections 23.1-23.5 Reflection Refraction Total Internal Reflection Image Formation Colour.

PHY132 Introduction to Physics II Class 5 – Outline: Ch. 23, sections 23.1-23.5 Reflection Refraction Total Internal Reflection Image Formation Colour and Dispersion  What is light?  Light is an electromagnetic wave – and is highly useful in our everyday life!  300 B.C. – Euclid of Alexandria noted that light travels in straight lines, and wrote down the Law of Reflection for plane mirrors.  (But Euclid believed that vision was due/

##### 1 Perception, Illusion and VR HNRS 299, Spring 2008 Lecture 2 Introduction, Light Course webpage:

may be point sources or more distributed sources of light. The light hits surfaces and interacts with them, with some being reflected, some absorbed and some transmitted. The reflected light may bounce off multiple surfaces before reaching the eye. Some of the light rays will eventually reach the eye and be focused on the retina. We will diagram this in class. 5 The Eye as a Pinhole Camera We/

##### Waves and Properties of Waves Physics. Waves A disturbance that carries energy through matter or empty space while moving from 1 place to another. They.

Class /waves/u10l1c.html http://www.glenbrook.k12.il.us/gbssci/phys/Class/Light travels Faster than Sound. Quiz- 5/2/12, 5/3/12 1) What is the wavelength of a wave that has a period of 2.95 minutes and a wave speed of 8.90 m/s? 2) Which wave behavior (Reflection/of a wave if the wavelength of the wave gets shorter (decreases)? 7) Determine the wave speed of a wave that has a period of 1.35 minutes and a wavelength of 0.56 m. 8) 2 waves come together and form a single, larger wave for a moment is an example of/

##### EE16.468/16.568Lecture 1 Class overview: 1.Brief review of physical optics, wave propagation, interference, diffraction, and polarization 2.Introduction.

Class overview: 1.Brief review of/Fiber Optical amplifiers and semiconductor optical amplifiers, Photonic switches and all optical switches 8.Opto-electronic integrated circuits (OEIC) EE16.468/16.568Lecture 1 Complex numbers/Reflection, refraction of light n1n1 n2n2 11 11 22 x z y E in ErEr EtEt Continuous @ z=0 EE16.468/16.568Lecture 1 Reflection, refraction of light/.468/16.568Lecture 1 Faraday rotation Apply B field generate delay for left or right polarization EE16.468/16.568Lecture 1 Jones Matrix /

##### Color Classification Using Adaptive Dichromatic Model Proceedings of the 2006 IEEE International Conference on Robotics and Automation Orlando, Florida,

in order to accurately model the underlying distribution. 8 In this paper we present a real-time algorithm for color classification using adaptive color modeling. We use Gaussian mixture model (GMM) of two components in the YUV space to model the distribution of a color class, according to the reflectance property of dichromatic materials. 9 DESCRIPTION OF THE METHOD DICHROMATIC REFLECTANCE MODEL Most previous works in adaptive color modeling/

##### Chapter 7:Understanding Light Topic 7.1: What is Light? Topic 7.2: Reflecting on Reflections Topic 7.3:Refraction.

mirror. C. Predictable Behavior- Reflection Any smooth shiny surface will reflect some light rays and images can be seen. C. Predictable Behavior- Reflection Very cool… Homework: P.215 #1-4, 6, 7 BLM 7-8,7-10, 7-11, 7-12aq Lab- next class YOU NEED A PROTRACTOR FOR THIS UNIT. Topic 7-3: Refraction Light travels straight and fast. The speed of light in air is 300,000 km/

##### Lecture 17Slide 16.837 Fall 2001 Ray Tracing Beyond the Graphics Pipeline Ray Casting Ray-Object Intersection Global Illumination - Reflections and Transparency.

general problem of light transfer between all objects in the scene, including direct and indirect illumination. Rendering equation is the general formulation of the global illumination problem: it describes how the radiance from surface x reflects from the / return surface.Shade(p, n, v, lights, objects, bgnd); } Lecture 17Slide 246.837 Fall 2001 Surface Object class Surfacepublic float ir, ig, ib; // surfaces intrinsic color public float ka, kd, ks, ns; // constants for phong model public float kt, kr, nt/

##### The University of Mississippi BASIC LASER SAFETY The Laboratory Services Division(LS) of Facilities Management.

nm351 nm 10 -12 10 -10 10 -8 10 -6 10 -4 10 -2 10 0 2 4 6 8 x-rays gamma rays Ultra- violet Infrared Radar / an optical table is responsible for identifying and terminating each and every stray beam coming from that component. To reduce accidental reflections, watches and reflective jewelry must be taken off/ bright light. Class 2 Lasers This class of intermediate power lasers includes any wavelength. Only hazardous for intrabeam viewing. This class will not cause thermal skin burn or cause fires. Class 3a /

##### R EFLECTION AND REFRACTION OF LIGHT 1 Creative Commons License Content Sourced and Aggregated by Centre for Positive Learning Supported by TCS iON Learning.

by Centre for Positive Learning Supported by TCS iON Learning Exchange  Activity  Assess Knowledge Class X / Term II / science A CTIVITY 1 Topic 1 To determine the focal length of a concave mirror by obtaining image of a distant object. Objective A concave mirror obeys the laws of refection of light. When parallel rays of light fall on meet at a point in front of the mirror after reflection from it/

##### Physics 102: Lecture 18, Slide 1 Total Internal Reflection, Brewster’s Angle, Dispersion, Lenses Today’s Lecture will cover textbook sections 23.3-5,

of people who can see the ball? 1) Increase2) Same3) Decrease Physics 102: Lecture 18, Slide 8 Fiber Optics Telecommunications Arthroscopy Laser surgery Total Internal Reflection only works if n outside < n inside At each contact w/ the glass air interface, if the light/ F Object P.A. Physics 102: Lecture 18, Slide 27 ImageObject Image Object Image 3 Cases for Converging Lenses This could be used as a projector. Small slide on big screen This is a /Slide 32 See you next class! Read Sections 23.9, 24.1, 3-4, 6

##### Universe Tenth Edition Chapter 18 The Birth of Stars Roger Freedman Robert Geller William Kaufmann III Clicker Questions.

of Stars Roger Freedman Robert Geller William Kaufmann III Clicker Questions We see an emission nebula via A.reflected blue light from a nearby star. B.reflected red light from a nearby star. C.blue light emitted by hot (excited) hydrogen atoms. D.red light/of spectral class G C.A supergiant star of spectral class G D.A main-sequence star of spectral class B E.More than one of the above A18.5 Which of/core. A18.8 Main-sequence stars have masses greater than about 0.08 solar masses. The reason for this is that/

##### Class Starter 1. How does the amount of energy in the electromagnetic spectrum change as you travel from radio waves to gamma rays? 2. Besides cooking,

cooking, name one other use for microwaves. Light Properties Speed of light is ~ 300,000,000 m/s (671 million mph) It takes about 8 minutes for light to travel from the sun to Earth. Light can travel around the Earth 7 times in 1 second. Light & Matter 1. Opaque Materials –Do not allow light to pass through –They either absorb or reflect light. –Ex. Aluminum foil Light & Matter 2. Translucent Materials –Allow/

##### SCIENCE 2015-16 Project Overviews for each Year Group and Longitudinal Studies.

class chart on the weather Keep individual and class tables of/. 32 pages. Ages 4-8 Livingston, Myra Cohn. Calendar /of light when it’s reflected through a prism Take accurate measures using standard units and using a range of equipment, including thermometers to check average temperature, highest and lowest; mm measures of shadow length; protractor for angles of reflection Gather data in a variety of ways to help answer a question eg: tables of length, time in 24 hour clock, light transparency test for/

##### DATA COMMUNICATION Lecture-25. Recap of Lecture 24  Cable Modems  Electromagnetic Spectrum  Transmission Media and its Types  Guided Media.

the form of light The Nature of Light  The speed of light – 300,000 Km/sec in a vacuum – Depends on the density of the medium through which it is traveling Refraction  Change of direction of a light ray – When a ray of light enters another substance, its speed changes abruptly, causing the ray to change direction Refraction Critical Angle  The incident angle at which the refracted angle is 90 degrees Reflection  A/

##### 1 1.Determine laser classes and components 1.Identify hazards Biological Non-Beam 1.Implement controls Engineering Administrative Work Practice PPE Objectives.

- Pulse limit cannot produce 125mJ in less than 0.25 s 20 Class 4 Laser - Pose greatest danger - Any output higher than Class 3B - Intra beam viewing hazard - Specular reflection hazard - Possible Diffuse reflection hazard - Fire hazard 21 Non-Classical Lasers Non-linear optics -Harmonic generation of light waves at integral multiples of the frequency of the original wave. -You may have to protect yourself simultaneously from multiple/

##### 1 University of South Florida Basic Laser Safety Training.

intrabeam viewing of specular reflections. Normally, Class 3b lasers will not produce a hazardous diffuse reflection. Class 4 denotes lasers and laser systems that produce a hazard not only from direct or specular reflections, but may also produce significant skin hazards as well as fire hazards. ANSI Classifications (cont’d) 23 Hazard Evaluation- Reflections Specular reflections are mirror-like reflections and can reflect close to 100% of the incident light. Flat surfaces/

##### Astronomy Unit 1 Earths Place in the Universe. What do you think? 1.What is a light year? 2.Why is the light year important in astronomy? Note: What do.

. Share your constellation picture and story with the class. Assignment 2: Choose one of the 88 official IAU constellations to research and present to the class. Specific requirements on Google Classroom Wrap-up: Consider/reflected light from the Sun off the surface of the moon as it orbits the Earth. Solar and Lunar Eclipses occur due to the alignment in orbit; they only occur occasionally when orbits are in the same plane. Review Assignment: - Astronomy Today (textbook) Page 30: Questions 2, 3, 5, 8/

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for lasing to occur. Mirrors on each end of the tube are aligned to reflect the laser beam through the active medium. About 2% of the light/of Los Alamos National Laboratory Laser-Professionals.com LASER SPECTRUM Retinal Hazard Region Gamma Rays X-Rays Ultra- Visible Infrared Micro- Radar TV Radio violet waves waves waves waves 10-13 10-12 10-11 10-10 10-9 10-8/ and procedures. Written Standard Operating Procedures (SOPs) are required for class 4 lasers. Only trained personnel are allowed inside the laser /

##### What is Computer Vision? Prof. Dr. Elli Angelopoulou Chair of Pattern Recognition (Computer Science 5) Friedrich-Alexander-University Erlangen-Nuremberg.

. First attempts: Tracing boundaries of polygonal objects. Revolutionary work by David Marr around 1975 at the Massachusetts Institute of Technology. First use of a pair of cameras for mimicking biological eyes in the /reflections, same background, consistent lighting) Page 11 Elli Angelopoulou Computer Vision The Role of Computer Vision Object Recognition (most widely funded is Automatic Target Recognition -ATR)  Compute dimensions of objects  Classify objects as possible targets  Compute location of/

##### Computing & Information Sciences Kansas State University CIS 536/636 Introduction to Computer Graphics Lecture 33 of 41 William H. Hsu Department of Computing.

Graphics Lecture 33 of 41 Radiosity [8]: Formula – Overall Form Factor Adapted from slides © 2001 - 2005 M. C. Sousa, University of Calgary CPSC 591//Class: Visualization Part 1 of 3 Computing & Information Sciences Kansas State University CIS 536/636 Introduction to Computer Graphics Lecture 33 of 41 Terminology Caustic: Envelope of Light Rays Reflected/Refracted by Curved Object RT Direction  “Forward” RT: Light-to-Scene, Scene-to-Eye (Only for Caustics)  “Backward” RT: Eye-to-Scene, Scene-to-Light/

##### Light and Color for the Middle School By Greg Corder.

Light and Color for the Middle School By Greg Corder TOC 1.Reflection and mirrors 2.Refraction and lenses 3.Applications of lenses and mirrors 4.Color: light, pigments, and wavelength 5.Diffraction 6.Interference 7.Light the electromagnetic wave 8.Photoelectric effect 9.Nature of light: particle, wave, or both? The Law of Reflection Flat surfaces reflect best. Curved Mirrors Concave mirrors converge light. Convex mirrors diverge light. Concave Mirror Light converges. This means that/

##### Welcome Emma Registered nurse Certified IPL laser therapy trainer Certified lumislim and laser lipolysis trainer Practising Nurse for more than 13 years.

High quality laser Increasing Interaction of light with matter reflection absorption refraction and transmission scattering If the surface is not smooth, light is scatted. Harley Street London Interaction of light with tissue Photo-thermal: Light is converted to heat, i.e., Lasers & IPL. Photo-mechanical: break down particles within the skin, i.e., in the use of Q-switched lasers for tattoo removal. Photo-chemical: light is used to stimulate/

##### Jan Vermeer ( ) This Dutch artist worked in Delft

of light and the countless ways it can be reflected. Notice the effect of light on form and color in the painting. The indirect light in the spacious studio contrasts with the direct light striking the figures in the foreground, bouncing and reflecting from a variety of/ of Caravaggio, it was typical for Velazquez to employ common local people as models—despite the mythological subject matter of /9” x 4’8” His large workshop in Seville, Spain, produced many canvases of the Virgin Mary, shown in/

##### Midterm! In 2 weeks Part I (online exam, Mastering Astronomy, 50 pts) will be available, due October 26th, 11:59pm In 3 weeks, Part II (in class exam,

refraction or reflection of light from the object. Lens Focusing Demo © Sierra College Astronomy Department © Sierra College Astronomy Department Lecture 5b: Telescopes: Portals of Discovery Refraction and Image Formation Light travels in a straight line as long as it remains in the same medium (i.e., the material that transmits light). Reflection is the redirecting of light off a surface Incident angle = reflection angle Refraction is the bending of light as it/

##### 14-2 Flat mirrors Distinguish between specular and diffuse reflection of light. Apply the law of reflection for flat mirrors Describe the nature of image.

a different orientation. The normal line at the point of incidence is different for different rays. Subsequently, when the individual rays reflect off the rough surface according to the law of reflection, they SCATTER in different directions. The result is that the rays of light are incident upon the surface in a concentrated bundle and are diffused upon reflection. Class work – today’s date Identify which angle is angle/

##### Evaluating Software Design Patterns — the ”Gang of Four” patterns implemented in Java 6 Department of Computer Science Faculty of Science University of.

J. Perlis Page 24 Gunni Rode — http://www.rode.dk/thesis High—Lights Abstract Factory/Factory Method: generic factories/methods capable of creating parameterised types in a type—safe manner Features: class and type literals (reflection), generics, inheritance, anonymous classes Memento: runtime access control of interface methods (guarded types) Features: exception handling (stack trace), class literals Observer: flexible, reusable components Features: runtime retained annotations, methods Proxy/State/