Join TSR now and get all your revision questions answeredSign up now

absorption and emmission lines from distant stars Watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    what dictates whether we get absorption lines or emission lines?
    Offline

    0
    ReputationRep:
    With stars we usually get absorption lines, with other bodies such as nebula we get emission lines. have a look here for more info:
    http://www.astronomynotes.com/light/s5.htm
    Offline

    0
    ReputationRep:
    Well that would depend on the equpment we are using to look at the stars. But absorption lines are just the negative of emmission lines, so if you have one, we can easily produce the other.

    Is there anymore context to your question?
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Fleming92)
    Well that would depend on the equpment we are using to look at the stars. But absorption lines are just the negative of emmission lines, so if you have one, we can easily produce the other.

    Is there anymore context to your question?
    no not really thats pretty much my question its just that my teacher was telling us we receive absorption line spectrums from stars if theres gas and dust obstructing our view of the star and emission line spectra when theres no obstruction is this true?
    Offline

    0
    ReputationRep:
    I think your teacher's right - the gas and dust particles would absorb some of the light, so you would get absorbtion line spectra.
    • Thread Starter
    Offline

    0
    ReputationRep:
    thanks for all your comments guys, i think i get it now
 
 
 
Poll
Is GoT overrated?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.