Doppler Effect and Blueshift and Redshift

slides presenting doppler effect and the difference of blueshift to redshift

1. Doppler Effect

2. Doppler Effect An apparent shift in frequency of a wave caused by relative motion between the source of the wave and the observer.

3. Frequency the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.

4. Wavelength the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave. Pitch The highness or lowness of sound.

5. Sound Waves

6. A moving sound source and a stationary observer.

7. Water Waves

8. REDSHIFT and BLUESHIFT By: Lily Rosemary L. Masilang BSE-III

9. What is REDSHIFT? REDSHIFT- term used when light is shifted toward lower frequencies or toward the red end of the spectrum. Higher wavelength, lower frequency

10. Cosmological redshift a redshift caused by the expansion of space. 3 Types of Redshift From the universe expansion From the movement of galaxies relative to each other From “gravitational redshift ” which happens when light is shifted due to the massive amount of matter inside of a galaxy.

11. What is BLUESHIFT? BLUESHIFT -  term used when visible light is shifted toward higher frequencies or toward the blue end of the spectrum. Lower wavelength, higher frequency

12. Blueshift is not something you see with your eyes. It is determined by the study of the wavelengths of light Spectrometer or spectrograph- an instrument used to dissect light.

13. Remember : Redshift and blueshift are used to refer to any range of wavelengths. Red and blue refer to the relative direction of the shift not the color.

14. Remember : Redshift - away from us or shifted towards the red end of the spectrum higher wavelength- lower frequency Blueshift - towards us or shifted towards the blue end of the spectrum. lower wavelength-higher frequency

15. THANK YOU 

16. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/redshift.html http://www.space.com/25732-redshift-blueshift.html Wikipedia