Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
The Doppler Effect
detected by
Christian Doppler
How does it work ?
• The lenght of the waves gets longer on the
side where the object go away and shorter on
the other sid...
How this effect affects our universe
• When a shining objekt
in the universe moves it
behaves like sound
• If the speed of the object increase the
wavelength increase too.
v v v
We only need the wavelength to
calculculate the speed, because:
But the speed is very high to the speed
of light, so we need the formula of the
Theory of the Relativity
How we can calculate the distance of
the object when we know the speed ?
Hubble law
• The linear correlation between distance (r)
and flightspeed (v) is called hubble law v=h0r
Hubble konstant
• „Hubble - konstant" H0 = 72 km/ s·Mpc
1 parsec = 3,6 Lightyears
1Mpc = 3,6 Millionen Lightyears
• In 1 Mpc 72km/s
• In 2 Mpc 144km/s
• .
• .
• .
• In ? y Mpc x km/s
x : 72 = y Mpc
• 1 Mpc = 3,6 Million Light-years
• y Mpc = 3,6 . y Million Light-years
• Can we imagine this distance?
• In 1s = 300 000 ...
Spectroscopy
The secret behind the light
History:
• 1814 sun spectrum from Joseph von Fraunhofer with
unknown black lines in the spectrum
• 1859 Kirchhoff and Buns...
Two types of visual spectroscopy
• Photon emission
• Photon absorption/Fraunhofer lines.
Ca+ Hβ Mg Na+He
Hα O2
Quasar calculations
Doppler effect and spectroscopy
Doppler effect and spectroscopy
Doppler effect and spectroscopy
Doppler effect and spectroscopy
Upcoming SlideShare
Loading in …5
×

0

Share

Download to read offline

Doppler effect and spectroscopy

Download to read offline

Comenius Dive in the Sky
Austria

Related Books

Free with a 30 day trial from Scribd

See all
  • Be the first to like this

Doppler effect and spectroscopy

  1. 1. The Doppler Effect detected by Christian Doppler
  2. 2. How does it work ? • The lenght of the waves gets longer on the side where the object go away and shorter on the other side.
  3. 3. How this effect affects our universe • When a shining objekt in the universe moves it behaves like sound
  4. 4. • If the speed of the object increase the wavelength increase too. v v v
  5. 5. We only need the wavelength to calculculate the speed, because:
  6. 6. But the speed is very high to the speed of light, so we need the formula of the Theory of the Relativity
  7. 7. How we can calculate the distance of the object when we know the speed ?
  8. 8. Hubble law • The linear correlation between distance (r) and flightspeed (v) is called hubble law v=h0r
  9. 9. Hubble konstant • „Hubble - konstant" H0 = 72 km/ s·Mpc 1 parsec = 3,6 Lightyears 1Mpc = 3,6 Millionen Lightyears
  10. 10. • In 1 Mpc 72km/s • In 2 Mpc 144km/s • . • . • . • In ? y Mpc x km/s x : 72 = y Mpc
  11. 11. • 1 Mpc = 3,6 Million Light-years • y Mpc = 3,6 . y Million Light-years • Can we imagine this distance? • In 1s = 300 000 km • 1Mpc = 3,6 Million Lightyears
  12. 12. Spectroscopy The secret behind the light
  13. 13. History: • 1814 sun spectrum from Joseph von Fraunhofer with unknown black lines in the spectrum • 1859 Kirchhoff and Bunsen noticed that different chemical elements color the flame from a bunsen burner in different colours.
  14. 14. Two types of visual spectroscopy • Photon emission • Photon absorption/Fraunhofer lines.
  15. 15. Ca+ Hβ Mg Na+He Hα O2
  16. 16. Quasar calculations

Comenius Dive in the Sky Austria

Views

Total views

918

On Slideshare

0

From embeds

0

Number of embeds

138

Actions

Downloads

23

Shares

0

Comments

0

Likes

0

×