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Monday, October 16, 2006

y12 Physics

Observation through out the whole em spectrum

Begin a new document.

Import a detailed diagram of the electro magnetic spectrum. (Use a web search)

Use Wien’s Law to calculate the temperature of the extreme edges of each band. ( If you haven’t got a calculator use the computers or Excel)

λ max x T = 2.898 x 10-3 mK


We cannot observe the whole spectrum from the ground due to absorption by the Earth’s atmosphere.

Insert a diagram of the Atmospheric Window and make relevant notes.

Useful site (http://freespace.virgin.net/gareth.james/index.htm#)

To observe in the microwave, infrared, ultra violet, X and Gamma ray bands we have to use satellites.

Find out about the following missions, what they observed and how useful they were.

The Hubble Space Telescope (http://hubblesite.org/)

IRAS (http://www.nasm.si.edu/nasm/dsh/artifacts/SS-IRAS.htm)

COBE and WMAP, (http://map.gsfc.nasa.gov/ http://aether.lbl.gov/www/projects/cobe/ )


XXM Newton ( http://xmm.vilspa.esa.es/ ) and
Chandra ( http://chandra.harvard.edu/ )

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