Properties of waves.

Slides:

Advertisements

Similar presentations

Reflection and Refraction of Light

Advertisements

Ripple Tank Summary.

Properties of Waves. The Ripple Tank To study waves, we will use a ripple tank. A ripple tank works by having a wave generating probe produce a continuous.

Waves Name: ________________ Class: _________________

O Level Physics Chapter :11: Properties of Waves

Refraction of light. Refraction is the bending of light as it passes from one medium to another.

Refraction What has happened in each example and why? I think this is called...It happens when... It happens because...The air is... The water is...The.

Dr. Jie ZouPHY Chapter 35 The Nature of Light and the Laws of Geometric Optics.

1© Manhattan Press (H.K.) Ltd. Reflection Refraction Refraction 12.1 Reflection and refraction Total internal reflection Total internal reflection.

4.4.1 Wave pulse: a wave pulse is a short wave with no repeated oscillations Progressive wave: a wave that moves through a medium transferring energy as.

Week 2 Lesson 1 Refraction. Objectives: To understand the refraction of light waves describe experiments to investigate the refraction of light know and.

Reflection and Refraction. Reflection Two laws of reflection Angle of incidence = angle of reflection The angle of incidence, angle of reflection and.

Waves Topic 4.5 Wave Properties. Wave Behaviour v Reflection in one dimension.

CHAPTER 12- WAVES. WHAT IS A WAVE? Mechanical waves vs non-mechanical waves?

Reflection How does reflection change a wave? Reflection occurs when a wave bounces off a surface that it cannot pass through. Reflection does not change.

Chapter 29 Reflection and Refraction. When waves interact with matter, they can be reflected, transmitted, or a combination of both. Waves that are transmitted.

Waves Topic 4.5 Wave Properties. Wave Behavior  Reflection in one dimension.

Transverse or longitudinal waves transport energy from one point to another. Each particle in the medium vibrates or oscillates, and disturbs the neighbouring.

Properties of Light and Reflection

Chapter Twenty-Three: Waves 23.1 Harmonic Motion 23.2 Properties of Waves 23.3 Wave Motion 1.

This is one type of wave…. wave Wave a disturbance that propagates through a material medium or space. Waves transfer energy without the bulk transport.

Do now! Can you discuss with your partner all the things you can remember about the WAVES topic (topic 3)

The incoming wave travels at 5ms -1 and has a wavelength of 4m. The wave changes its speed once it moves onto a shallower region and as the result its.

Waves and Sound Wave Characteristics.

 The behavior of a wave is greatly influenced by the medium in which it is traveling.  The wave frequency remains unchanged in different medium.  The.

Light Box Lab #1 Review. Absorption : p.548 transfer of energy to the medium » Depends on type of material Transmission: p.458 passage light through an.

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

Wave Properties. Reflection When a wave is turned back toward its start point Fixed End – wave hits an obstacle that is rigid and is reflected back inverted.

11/24/08 Warm Up Draw a wave and label the crest and trough.

Wave a disturbance that propagates through a material medium or space. Waves transfer energy without the bulk transport of matter. In order for a mechanical.

Waves Waves can transfer energy and information without a net motion of the medium through which they travel. They involve vibrations (oscillations) of.

Wave Properties. S8P4. Students will explore the wave nature of sound and electromagnetic radiation. d. Describe how the behavior of waves is affected.

WAVE INTERACTIONS PAGE 47 OF INB. EQ: How do waves change when they interact with their environment?

2-3 Reflection and Refraction

Four Important Properties of Waves. 1.Reflection 2.Refraction 3.Diffraction 4.Interference.

Wave Characteristics Rarefaction Wavelength Trough Transverse Period.

Water Waves Ripple tank experiment Basic set-up for the ripple tank experiment Next Slide Mechanism of producing bright and dark fringes Stroboscope :

Wave Properties of Light

Essential Question: What are the different types of wave interactions?

What Physics is involved here?

Light Waves. We see objects because they emit or reflect light Cataract is an eye problem when one of the eyes become cloudy so the people are unable.

Diffraction of Water Waves

Do Now: White Boards What class and type of wave is light?

Properties of Waves.

Behavior of Light.

Wave a disturbance that propagates through a material medium or space.

Wave a disturbance that propagates through a material medium or space.

The law of reflection: The law of refraction: Image formation

Essential Question: What are the different types of wave interactions?

Wave a disturbance that propagates through a material medium or space.

Reflection How does reflection change a wave? Reflection occurs when a wave bounces off a surface that it cannot pass through. Reflection does not change.

Reflection, Refraction, Diffraction

Standard: Describe how the behavior of light waves is manipulated causing reflection, refraction, diffraction and absorption. What am I learning today?

Chapter 13 Waves and Sound.

i = r Wave Front REFLECTION

Light SECONDARY 3 PHYSICS.

Chapter 13 Waves and Sound.

i = r Wave Front REFLECTION

Unit 4 - Energy Learning Target 4.4 – Be able to describe wave interactions (reflection, refraction, diffraction, and absorption),

Chapter 17-3 Notes Name: The ripples visible on the bottom of the pool are caused by light shining through surface waves.

How is light reflected from a mirror?

Reflection & Refraction

(Get Ready, Get Ready, Get, Ready!)

Presentation transcript:

Properties of waves

RIPPLE TANK

A ripple tank consists of a rectangular try with glass bottom A ripple tank consists of a rectangular try with glass bottom. This tray is placed approximately at a height equal to ½ m above the surface of table by the help of four legged frame, on which tray is placed containing water having light source above and white screen below to receive the wave images.

The behavior of water can be studied in a ripple tank The behavior of water can be studied in a ripple tank. The circular pulses are obtained by dipping dipper in water and straight pulses are obtained by ruler. Continuous pulses are ripples are generated by an electric motor.

REFLECTION of waves WITH THE HELP OF RIPPLE TANK

By using ripple tank the reflection of water waves can be observed. Straight waves are generated by the help of oscillating plane of ripple tank. A plane surface is placed in the path of these waves it acts like hurdle, and the path of waves is changed. It is called reflection of waves.

Angle of incidence = Angle of reflection . It is possible to measure the angle of incidence and angle of reflection. These two angles are found to be equal, according to law of reflection. Angle of incidence = Angle of reflection < i = < r AO is incident and OB is reflected direction of motion of water waves.

REFRACTION OF WATER WAVES

When waves from one medium enter in the second medium at some angle their direction of travel may change. This phenomenon is called refraction of waves. A plastic sheet is placed at an angle to the incoming plane waves to create a region of shallow water.

The difference in depth of water causes a change in speed of wave. The change in the direction due to change in velocity is called refraction. n = Sin < I / Sin < r

DIFFRACTION OF WATER WAVES

Two obstacles with narrow gap between them are placed in the path of plane waves in a ripple tank. The width of gap is compare able to wave length of waves. The waves passing through the gap spread out in all directions. The wave fronts are circular. The spreading or bending of waves is called diffraction.