Sun dogs, or mock suns, are technically called solar parhelia (parhelia meaning "with the sun") and appear as bright bursts of light formed when sunlight.

Slides:

Advertisements

Similar presentations

Refraction of Light.

Advertisements

A fish swims below the surface of the water at point P

Waves – Topic 4 Chapters 26 Reflection & Refraction Reflection & Refraction Reflection & Refraction.

Refraction of light. 1John says, ‘When hunting a fish under water, you should aim your spear directly at the fish.’ Do you agree? Yes, of course. No,

Optics Val Bennington October Path of Radiation (Light) Can be modified: Reflected Scattered Absorbed Or path may remain the same: Transmitted.

Chapter 15 Pretest Light and Refraction

Refraction is the _________ of light when it enters a new medium / material. For example: Light traveling from the cat to our eye must travel through glass.

Reflection & Refraction When waves are incident on the boundary between to media, some of the wave will be reflected back into the first medium, some of.

Refraction How to Find Images Using Ray Diagrams  Bending of light due to a change in speed (changes mediums)  Objects behind or in more optically dense.

sections 26-3 – 26-5 Physics 1161: Pre-Lecture 22 Reflection and Refraction of Light.

Physics 1051 Lecture 7 Slide 1 Refraction of Light –Part 2.

Rainbows, Fiber Optics, Sun Dogs, Sun Glasses sections 26-8 & 25-5 Physics 1161: Lecture 18.

Physics. PHS 5041 Optics Refraction of Light Refraction always occurs simultaneously with some partial reflection Change in direction is with respect.

Refraction occurs at a boundary The speed of light must change at the boundary The angle of the light ray is measured from the normal, as was the case.

Light by Rifki Irawan Refraction. Based on how the light behaves as it encounters a substance, substances can be classified into: Transparent substance.

Rainbows, Fiber Optics, Sun Dogs, Sun Glasses sections 26-8 & 25-5 Physics 1161: Lecture 18.

Aim: What happens to the speed of light in different mediums? Do Now: What is the wavelength of yellow light? v = f λ c = f λ 3 x 10 8 m/s = (5.20 x 10.

REFRACTION. REFRACTION OF WAVES Refraction: A change in the direction of waves as they pass from one medium to another, or of water waves as they encounter.

Reflection and Refraction 1. Reflection Reflection is when light hits a boundary and bounces off The law of reflection states that the angle of incidence.

LIGHT REFRACTION OF LIGHT

Optical Refraction Optical Density is a property of a transparent material that is inverse to the speed of light through the material. Air Water incident.

Refraction. What is Refraction  Refraction occurs when light moves from one medium (material) to another  Because of density differences light will.

 The amount of refraction in a material can be determined using the index of refraction.index of refraction  The index of refraction can be used to.

REFRACTION. What is Refraction?  Refraction is the bending of light rays as they travel from one medium to another.  Medium – a material that is part.

Refraction. Explore Angle of IncidenceAngle of Refraction 60° 50° 40° 30° 20° 10° 0°

1. How is the index of refraction calculated? How is light refracted as it speeds up? How is light refracted as it slows down? Index of refraction = speed.

Rainbows, Fiber Optics, and Sun Dogs section 26-8 Physics 1161: Lecture 24.

Ch. 17 Reflection and Refraction Milbank High School.

Refraction What do you think? Suppose you are reaching for swim goggles floating below the surface of a pool or trying to net a fish while out in.

In a vacuum (void of molecules), light travels at 3.0 x 10 8 m/s, Light travels at different speeds in different materials or mediums. while in water.

Refraction Chapter 15. Refraction Refraction: The bending of light as it travels from one medium to another Refraction occurs when light’s velocity changes.

Unit – K3 Refraction 25th of May 2007 Form Group 8_y.

Chapter 17 Reflection and Refraction. Ch 17.1 How light behaves at a boundary.

Refraction. Refraction is the bending (change in direction) of light when it travels from one medium into another. Caused by a change in speed Refraction.

Optics Reflection, Refraction & Snell’s Law Lesson 2

Refraction (Slowing Down) When a wave passes into a medium that makes it slow down, the wave will bend toward the normal Air Water.

the change of direction of a ray of light as it passes obliquely from one medium into another of different transmission speed.

AQUINAS DIOCESAN GRAMMAR Refraction of Light. AQUINAS DIOCESAN GRAMMAR The bending of light is called refraction. Refraction happens when light travels.

Refraction of Light –Part 2. Internal Reflection When light travels from a slow medium to a fast medium, the angle of refraction is larger than the angle.

Refraction occurs when light waves bend as they are passing from one medium to another. Causes a change in: Causes a change in: – Speed – Wavelength –

12.1 Refraction.

Science 8: Unit C – Light and Optical Systems Topic 3: Refraction.

Refraction of Light Optical density a property of a transparent material that is an inverse measure of the speed of light through a material Optical refraction.

{ Refraction The bending or change in direction of light when it travels from one medium into another.

12.1 What is Refraction?.  The bending or change in direction of light when it travels from one medium to another.

Have you ever wondered why a straw appears to be disconnected when placed in water?

REFRACTION Physics Chapter 18b. Refraction Bending rays of light as it passes from one medium to another Caused by change in speed of wave Amount of refraction.

Refraction of Light.

L3 Refraction Learning Objectives: Describe refraction.

Happy Tuesday! Get ready for warm up #4 Get out paper for notes. Title them: “Snell’s Law and Refraction” Essential Question: What is Snell’s Law?

What is refraction? The straw appears to be bent in the liquid. What is causing this effect? As the light crosses the boundary between fluid and glass,

Week 4/5- REFRACTION.

What Physics is involved here?

Reflection and Refraction

Refraction of Light.

Refraction of Light Sun dogs, or mock suns, are technically called solar parhelia (parhelia meaning "with the sun") and appear as bright bursts.

Index of Refraction n = index of refraction c = speed of light in a vacuum (3.00 x 108 m/s) v = speed of light in other medium.

Plane Mirror – Reflection

EXT: Explain why a show is produced in both pictures.

Refraction The bending or change in direction of light when it travels from one medium into another.

REFRACTION OF LIGHT.

Refraction Refraction.

Presentation transcript:

Sun dogs, or mock suns, are technically called solar parhelia (parhelia meaning "with the sun") and appear as bright bursts of light formed when sunlight passes through ice crystals at the proper angle. Sundogs are formed by plate shaped hexagonal ice crystals in high and cold cirrus clouds refraction

Gabriel’s method of fishing involves spearing the fish while standing on the shore. The actual location of a fish is shown in the diagram below. Indicate on the diagram where Gabriel must aim in order to strike the fish.

This optical effect is due to refraction. As light passes from one transparent medium to another, it changes speed, and bends. How much this happens depends on the refractive index of the mediums and the angle of incidence.

Angle between the light ray and the normal is called the angle of incidence. Angle between the light ray and the normal as it enters a new medium is called the angle of refraction.

Each medium has a different refractive index

Draw the refracted ray in each case.

Index of Refraction n Measures the slowing of the speed of light. n= c v c is the speed of light in a vacuum, 3.0 x 10 8 m/s v is the speed of light in the other medium.

INDEX OF REFRACTION

Sample problems 1.Calculate the speed of light in ice. 2. The speed of light in a solid is 2.05x10 8 m/s. What is the solid?

                                              3.What is the speed of light in a) liquid ethyl alcohol (n = 1.36) and b) solid sodium chloride (n = 1.54) ? n = 1.36 a) v= 3.0 x 10 8 v ethanol = 2.2 x 10 8 m/s c v

v sodium chloride = 1.9 x 10 8 m/s b) c= v NaCl x n 3.0 x 10 8 = v NaCl x 1.54