Monday, 11 October 2010


Recap on related topics:

-    The theory of star formation is a model developed by observing different stars and realising that each is at a different stage.

-          In outer ‘space’ there’s roughly 1 atom present per cm3

-          Dense gas Clouds take place between stars and consists of plasma, nuclei, electrons, ions and dust of other stars that combusted due to Super Novas.

-          In Dense gas clouds, particles have low kinetic energy, which promotes gravitational forces to hold the molecules together. This eventually results in parts of the clouds compressing.

-          Nuclear fusion is a nuclear reaction – it is when nuclei join.

Spectroscopy is the study of light and matter.
We use two models to describe light.
1-      The Particle Model
This was deviced by Alvert Einstein. He suggested that light is a stream of photon packages, and that the energy of the photons is relative to the position of the light in the electromagnetic spectrum.

Max Planck suggested that E = h v
Where E is the energy of a photon.
V is the frequency of the light.
h is the “Planck constant” which is equal to 6.63 x 10-34

2-      The Wave Model
The wave model centres around the idea that light, as a part of the electromagnetic spectrum has a wave with specific characteristics (Wave length and frequency).

n.b. Speed of light (Symbol c) is equal to 3.00 x 108 ms-1
        Wave length is symbol λ
        Freqncy is symbol v

c =  λ v


  1. i srsly have no idea what the fuck is going on

  2. Hi NotBlank, Spectroscopy is about the study of composition of visible light. If you have any specific questions, I'll be more than happy to answer them.


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