Posted: November 20th, 2014

The Relationship het NN cell I iiininosit Distance, and Briuhtliess

The Relationship het NN cell  I iiininosit Distance, and Briuhtliess

Hand in this pie 1,11? At tht.Y bcF.tnntiw onlic Slat Spccii-A. and the Diagram Lab.
Much of what wc 1,11? at??ut ow 1 .„,‘ c,sc ,, based on what we know about stars. Our knowledge of light and spc;tia enal,ls us to stud the properties of stars

without being able to visit them directly. lu this lab. c’ll look at how we use the information contained in starlight to t i k.k.4t.ciminc their si.-,•;.

tcmpci.oures• distances and luminosities.
The Relationship het NN cell  I iiininosit Distance, and Briuhtliess
The luminosity stai Ow amount ?lcnerrx .1 star gives oft each second. The brightness is the amount of’ that cncir. thAt teaches Farth. Before jumping into the

luminosity and brightness of stars, let’s shut with an analogy that’s more down to earth.
You are standing nett – a S 0.1d at night. You see a distant car dri ing towards you. As the car approaches you, do the car’s headlights appear brighter or dimmer

than they were Iv hen the car IN as tar away?
Does the total amount of light emitted by the car’s headlights (i.e., the luminosit‘ of the headlights) change as the ear approaches you? ‘‘ by or why not?
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