REFLECTION THE BOUNCING OF LIGHT.

Slides:

Advertisements

Similar presentations

TOC 1 Physics 212 and 222 Reflection and Mirrors What do we see? Law of Reflection Properties of Spherical Mirrors Ray Tracing Images and the Equations.

Advertisements

Reflection Light incident upon a boundary between

Mirrors Ch. 20. Mirrors Mirror – any smooth object that reflects light to form an image.

Images on a Plane Mirror

Chapter 16.3 – Reflection and Color

Physics 110G Light TOC 1 What do we see? Law of Reflection Properties of Spherical Mirrors Ray Tracing Images and the Equations.

Spherical Mirrors Spherical mirror – a section of a sphere of radius R and with a center of curvature C R C Mirror.

1 Reflection and Mirrors. 2 The Law of Reflection “ The angle of incidence equals the angle of reflection.”

Ray Optics: Reflection and Refraction Rays Representation of the path that light follows Represent beams of light that are composed of millions.

Reflection Regular reflection occurs when parallel light rays strike a smooth surface and reflect in the same direction. Diffuse reflection occurs when.

Types of mirror When we draw a ray diagram we represent a mirror by drawing a line with dashes on the silvered (non-shiny) side. Most mirrors are flat.

Chapter 7 Light and Geometric Optics

Plane Mirror: a mirror with a flat surface

The amount of reflection depends on how different the media are.

Mirrors. Mirrors and Images (p 276) Light travels in straight lines, this is the reason shadows and images are produced (p 277) Real images are images.

Reflection Regular reflection occurs when parallel light rays strike a smooth surface and reflect in the same direction. Diffuse reflection occurs when.

Reflection Regular reflection occurs when parallel light rays strike a smooth surface and reflect in the same direction. Diffuse reflection occurs when.

Optics Mirrors and Lenses. Topics for Optics Reflection of LightReflection of Light –Law of Reflection –Plane Mirrors –Concave Mirrors –Convex Mirrors.

Reflection of Light Reflection – The bouncing back of a particle or wave that strikes the boundary between two media. Law of Reflection – The angle of.

1 Reflection and Mirrors Chapter The Law of Reflection When light strikes a surface it is reflected. The light ray striking the surface is called.

Reflection & Mirrors Topic 13.3 (3 part lesson).

Unit 3 Lesson 3 Mirrors and Lenses

Reflection of Light Reflection – The bouncing back of a particle or wave that strikes the boundary between two media. Law of Reflection – The angle of.

Spherical Mirrors.

Reflection of Light Reflection – the turning back of an electromagnetic wave at the surface of a substance.

Reflection from Flat Surfaces

Spherical Mirrors A spherical mirror has the shape of a section of a sphere The mirror focuses incoming parallel rays to a point (focal point) A concave.

Mirrors and Lenses.

Reflection & Mirrors.

Light, Mirrors, and Lenses

RAY DIAGRAMS FOR MIRRORS

What do we know already?. What do we know already?

Mirror Equations Lesson 4.

Curved Mirrors, Ray Diagrams and Nature of Image.

Reflection In your books sketch the set up putting the labels in the correct place Mirror Incident ray Angle of reflection Angle of incidence Reflected.

Light, Reflection, & Mirrors

Ch. 22 Sec. 3 Reflection & Mirrors

air water As light reaches the boundary between two media,

Reflections in Mirrors

Light in Curved Mirrors

Images formed by Mirrors

Curved Mirrors There are concave mirrors that are curved inward

4.4 Concave and Convex Mirrors

Images on a Plane Mirror

Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.

Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.

Millions of light rays reflect from objects and enter our eyes – that’s how we see them! When we study the formation of images, we will isolate just a.

REFLECTIONS of PLANE AND SPHERICAL MIRRORS

Light Reflection – the “bouncing” of light off of a surface. The light does not pass through the surface (called a medium), Refraction – is the “bending.

Reflection from mirrors

Reflection Physics Chapter 18a.

Convex Mirrors.

Light, Reflection, & Mirrors

Lenses A lens is a transparent material (with at least one curved side) that causes light refracts in a predictable and useful way. Each ray is refracted.

Optics Mirrors and Lenses.

Locating Images in Plane Mirrors

Types of mirror When we draw a ray diagram we represent a mirror by drawing a line with dashes on the silvered (non-shiny) side. Most mirrors are flat.

The laws of reflection.

Using Mirrors to Form Images

air water As light reaches the boundary between two media,

Unit 3 Lesson 3 Mirrors and Lenses

Light, Reflection, & Mirrors

Presentation transcript:

REFLECTION THE BOUNCING OF LIGHT

REFLECTION THE BOUNCING OF LIGHT FROM SURFACES THAT ARE FLAT, CURVED, OR ROUGH.

NORMAL THE ANGLE A BEAM OF LIGHT MAKES WHEN IT STRIKES A SURFACE IS DESCRIBED WITH RESPECT TO THE NORMAL. THE NORMAL IS AN IMAGINARY LINE DRAWN PERPENDICULAR TO THE SURFACE.

θ1 = θ2 WHERE IS THE NORMAL? DIAGRAM NORMAL ANGLE OF INCIDENCE 20° 20° ANGLE OF REFLECTION θ1 = θ2

THE LAW OF REFLECTION THE ANGLE OF INCIDENCE IS EXACTLY EQUAL TO THE ANGLE OF REFLECTION. ANGLE OF INCIDENCE = ANGLE OF REFLECTION

CURVED SURFACES TWO TYPES OF SPHERICAL MIRRORS: CONVERGING (CONCAVE) DIVERGING (CONVEX)

OBJECT DISTANCE THE DISTANCE FROM THE MIRROR TO THE OBJECT. THIS VALUE IS ALWAYS POSITIVE.

IMAGE DISTANCE THE DISTANCE FROM THE MIRROR TO THE IMAGE. TWO TYPES OF IMAGES REAL VIRTUAL

REAL IMAGE A REAL IMAGE IS INVERTED AND ABLE TO BE PROJECTED ONTO A SCREEN

VIRTUAL IMAGE AN IMAGE THAT IS RIGHT SIDE UP AND NOT ABLE TO BE PROJECTED ON A SCREEN.

FOCAL POINT THE POINT WHERE PARALLEL RAYS MEET OR APPEAR TO MEET AFTER REFLECTING FROM A MIRROR.

FOCAL LENGTH THE DISTANCE FORM THE FOCAL POINT TO THE MIRROR IS THE FOCAL LENGTH IT IS A POSITIVE VALUE FOR A CONVERGING MIRROR IT IS A NEGATIVE VALUE FOR A DIVERGING MIRROR

1/f = 1/do + 1/di MIRROR EQUATION ______1____ = _____1___ + ____1__ ______1____ = _____1___ + ____1__ FOCAL LENGTH OBJECT DISTANCE IMAGE DISTANCE 1/f = 1/do + 1/di

RAY DIAGRAMS MANY SITUATIONS INVOLVING MIRRORS CAN ALSO BE SOLVED USING RAY DIAGRAMS. A RAY DIAGRAM SHOWS THE PATHS OF THE LIGHT RAYS AS IT HITS AN OBJECT.

CONVERGING MIRROR (CONCAVE) SCENERIO A IF AN OBJECT IS MORE THAN ONE FOCAL LENGTH AWAY FROM THE MIRROR: THE IMAGE IS REAL, INVERTED IN FRONT OF THE MIRROR CAN BE PROJECTED ON A PIECE OF PAPER.

SCENERIO A DIAGRAM CONVERGING

SCENERIO B IF THE OBJECT IS AT THE FOCAL POINT NO IMAGE IS FORMED BECAUSE THE REFLECTED RAYS ARE PARALLEL

SCENERIO B CONVERGING

SCENERIO C IF AN OBJECT IS LOCATED LESS THAN ONE FOCAL LENGTH FROM A CONVERGING MIRROR: THE IMAGE IS VIRTUAL UPRIGHT ENLARGED BEHIND THE MIRROR OBJECT DISTANCE IS POSITIVE IMAGAE DISTANCE IS NEGATIVE

SCENERIO C CONVERGING

DIVERGING (CONVEX) MIRROR THE IMAGE FORMED BY A DIVERGING MIRROR IS ALWAYS VIRTUAL UPRIGHT SMALLER BEHIND THE MIRROR OBJECT DISTANCE IS POSITVIE IMAGE DISTANCE IS NEGATIVE

DIVERGING MIRROR CONVEX