1. Central College Nottingham
Laws of Radiation
Exercise
Chris Petch
Central College Nottingham
To Print
Students Name: …………………………………………………………………..

2. Topic Aims Method Equipment Duration Laws of Radiation Exercise
Pre-exposure to Stefen’s and Wien’s laws
Laws contextualised to Astronomy
Students derive Stefen’s and Wien’s laws in a qualitative manner
Level
To Level 3
Method
Slide 2 for the Teacher, Slide 3 and 4 are exercises to be completed by the students.
Equipment
Hand-outs
Pens/pencils
Plain paper either A3 or A4
Duration
>30 Minutes
Hidden

3. Exercise Below is a list of 10 famous stars in the night sky:
Betelgeuse
Sirius A
Rigel
Vega
Aldebaran
Antares
Pollux
Castor
Proxima Centauri
Polaris
To Print
Produce a set of PowerPoint slides on the properties of each of these stars, to include:
Image of star when viewed through a telescope
Surface temp (in Kelvin)
Apparent Colour (use the “halo” around the outside of the star)
Diameter (in km)
Distance from Earth (in light years)
Apparent Magnitude (how bright it appears to the naked eye)
Absolute Magnitude (how bright a star is at a fixed distance)

4. Exercise Extension Tasks:
On an additional slide, explain if there are any links between:
Distance and apparent brightness
Colour and Temperature
Diameter and absolute brightness (Magnitude)
Temperature and absolute brightness (Magnitude)
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