Hydrogen gas in the lab emits light with a frequency of 4.50 x 10 14 Hz. Hydrogen gas in stars from distant galaxies is observed to have a frequency of.

Slides:

Advertisements

Similar presentations

David - Doppler He is known for the principle he proposed he first proposed in concerning the colored light of double stars in He hypothesized that.

Advertisements

Find the fundamental frequency and third harmonic of an organ pipe of length 50cm. Assume the organ pipe is closed at one end and the speed of sound in.

A submarine travelling at a speed of 10ms -1 “pings” an underwater sonar detector which is directly inline with the submarine. The broadcast frequency.

Sound. 1. The ____ of a sound is how high or low we hear its frequency. pitch.

The Doppler Effect. Doppler Effect & Sound Christian Doppler Observing the Doppler Effect Christian Doppler Observing the Doppler Effect Christian Doppler.

DOPPLER EFFECT This is the apparent change in the frequency of a wave motion as noted by an observer when there is relative motion between the source.

Do Now: Write down some uses or practical applications of the Doppler Effect Please have your H/W out ready for me to collect with your name on it Rātapu,

What can electromagnetic waves tell us about the movement of planets, stars, and galaxies?

Theory on the Formation of the Universe

Before the bell rings, in your notes, write out the important aspects of a correctly designed experiment. Make sure to include a description of your variable.

Stars and Galaxies 28.1 A Closer Look at Light Chapter 28.

Doppler Effect Physics 11.

THE DOPPLER EFFECT. When the source of a sound is moving towards you, the pitch sounds higher than that of the source. When the source moves away from.

The Big Bang & The Origin of Atoms Initial Observations In the 1920’s, Edwin Hubble who was making telescopic observations of galaxies outside the Milkyway.

Doppler Effect Doppler effect- an observable change in frequency. As a moving object approaches an observer the frequency goes up, as is moves away the.

Astrophysics and Cosmology The Wavelengths get “squished” in the direction of motion, and “stretched” in the opposite direction. Doppler Shift Longer,

CHAPTER 14 Sound Doppler Effect A train passes by you with its whistle/horn blowing. You hear one pitch (tone) as the train is coming towards you and a.

Doppler Effect Change in frequency when a source of sound is moving relative to an observer. Source of sound moving Source of sound stationary Hears lower.

Electromagnetic Spectrum

Unit 3 Astronomy.  Each element and type of star has a unique pattern of color in a spectroscope  Spectroscope: An instrument that separates light into.

What is the DOPPLER EFFECT? Doppler and Sound  When sound waves are made they spread out evenly in all directions like ripples on a pool of water 

Waves. The time it takes for one wavelength to pass is called the period. The number of wavelengths passing at a given time is called frequency.

The Electromagnetic Spectrum in our Universe. Background info. ★ Everything astronomers know about the universe comes from studying light from distant.

The Electromagnetic Spectrum Energy moves in uniform patterns called waves. The electromagnetic spectrum consists of the range of all possible frequencies.

The Expanding Universe. The Hubble Law The Hubble constant H o is one of the most important numbers in cosmology because it may be used to estimate the.

1 Wave Interference: Beats 2 Beats Previously we considered two interfering waves with the same . Now consider two different frequencies. When waves.

The Universe is Expanding – Galactic Redshift Recall from waves, that the frequency of a wave can be distorted by relative motion – The Doppler Effect.

An Expanding Universe Redshift, Blueshift and the Doppler Effect.

The Expanding Universe. Basic Properties of Stars Magnitude Measuring the Stars –One of the most basic observable properties of a star is how bright it.

Mr. Z’s “Waves” Unit Describe what is meant by the Doppler effect AIM: What is the Doppler effect?

THE BIG BANG THEORY The Expanding Universe. Review Human demonstration.

Length Contraction. Relative Space  An observer at rest measures a proper time for a clock in the same frame of reference.  An object also has a proper.

Doppler Effect David William D. Ecoben III-Archimedes.

Calculating Wave Speed. Wave Speed v fλ Practice Problem #1 What is the speed of a sound wave that has a wavelength of 2 m and a frequency of Hz?

The Doppler Effect. Shown by all types of waves Properties of Waves Waves are characterized by two numbers: Wavelength,  (size of the wave) Frequency,

The Doppler Effect The sound of a police car siren changes as it moves past you. The pitch of the siren seems to change. Ahead of the car, the sound waves.

EVIDENCE SUPPORTING THE EXPANDING UNIVERSE The Electromagnetic Spectrum and The Doppler Effect.

The Expanding Universe Additional reading: Higher Physics for CfE, p Notes p.42 Watch or listen to the following video clips:

The Doppler Effect Textbook: 13.5 Homework: pg. 473 # 18, 19 pg. 476 # 64 – 71.

Chapter 24 Video Field Trip: Fireball Write down five facts from the video!

The Doppler Effect Introductory Video as a sound source moves towards you it appears to have a higher frequency than normal as the source moves away it.

Add to table of Contents: Star Life diagramPg. 76 Life Cycle of a StarPg. 77 Spectral fingerprintPg. 78 Electromagnetic spectrumPg. 79 Big Bang LabPg.

Sound Waves March 22-23, The nature of sound What is a tuning fork? How are they used? How do we know that sound is a wave? Visualizing sound waves.

Key Areas covered The Doppler effect is observed in sound and light The Doppler effect causes shifts in wavelengths of sound and light The light from objects.

Key Areas covered The Doppler effect is observed in sound and light The Doppler effect causes shifts in wavelengths of sound and light.

Doppler Effect A Doppler effect is experienced whenever there is relative motion between a source of waves and an observer. A Doppler effect is experienced.

Doppler Effect The Doppler Effect is the change in the observed frequency caused by the motion of the wave source.

Doppler Effect Shift in frequency (high to low) due to the compression of light (or sound) waves in front of a moving object and the expansion of the light.

Large-Scale Structure in the Universe Superclusters, walls, and voids dominate the large scale structure of the Universe.

Temperature Dependence of the Speed of Sound, Doppler Effect Homework #4.

Mr. Z’s “Waves” Unit.

Doppler Effect The apparent shift in frequency caused by the movement of the sound source or the movement of the observer. When the waves get crunched.

The Doppler Effect Elvis 8 (1963) Andy Warhol Vocabulary:

Doppler Effect Doppler Effect – The apparent change in frequency of a wave due to the motion of the source and/or the observer Stationary Source – Moving.

Moving stars and changing colors

Red and Blue Shift.

Title: 30.1 Galaxies and The Universe

The colored words are important

Doppler Effect and Red/blue Shift

1. Doppler Effect Change in frequency of a wave due to relative motion between source and observer. A sound wave frequency change is noticed as a change.

Redshift Ms. Griswold 5/14/2014.

The Wave Equation Aim Be able to use the wave equation in calculations.

Calculating Wave Speed

Star Light The spectrum of light a star emits can tell us what type of atom is present both inside the core and in its atmosphere. The pattern of dark.

Doppler Effect (Ch. 12 Sec 12 7 p.338 – 342)

Key Areas covered The Doppler effect is observed in sound and light

Key Areas covered The Doppler effect is observed in sound and light

Before the bell rings, in your notes, write out the important aspects of a correctly designed experiment. Make sure to include a description of your variable.

Radhabai Kale Mahila Mahavidyalaya, Ahmednagar

Presentation transcript:

Hydrogen gas in the lab emits light with a frequency of 4.50 x Hz. Hydrogen gas in stars from distant galaxies is observed to have a frequency of 4.40 x Hz. a)Is the galaxy moving towards or away from Earth? b)Calculate the speed of the galaxy Tūrei, 12 Haratua 2015 Do now: Hint: c = 3.0 x 10 8 ms -1

Think-Pair-Share What would the spectral shift of galaxies look like if the universe was collapsing? What would cause the universe to collapse?

Today’s Kaupapa: Today’s Tasks: LO5: Explain the red-shift of stars and how this supports an expanding universe 1)Finish Activity 6A 2)NCEA questions 3)Derive Doppler (E/S) Reminder: H/W Set 4 (Doppler) due Thursday 14 th Feb due Thursday 14 th Feb

Balloon Ants…

Videos Perimeter Institute (30 min) - The Mystery of Dark Matter TVNZ7 Ever Wondered: Episode 7

Tim observes an apparent change in frequency when a helicopter flies directly over his head. When the helicopter is travelling at 32 ms  1 the frequency of the sound wave directly in front of it is 828 Hz. The speed of sound in air is 3.40  10 2 ms  1. 1) Calculate the frequency of the sound wave produced by the helicopter to the correct number of significant figures. 2) The helicopter is not travelling directly towards Tim. Explain how the frequency of the sound wave Tim hears, as the helicopter gets closer, compares with the frequency of the sound wave directly in front of the helicopter (828 Hz). Do now: Tūrei, 12 Haratua 2015

Solution: Tūrei, 12 Haratua 2015 (M) (E)