Science

22nd November 2002 at 00:00
The pyramids could provide an interesting discussion on the limitations of scientific investigation. The pyramids have an aura of mystery. Think of their size, their alleged curses and the many different explanations for them.

The theory relating the shafts to star constellations encourages discussion about why the stars have had such a powerful influence over people's lives and why their position changes over time.

Science has extended our techniques of archaeological analysis; radiocarbon dating, X-ray diffraction analysis, resistive surveying and thermoluminescence to name a few. Discover thermoluminescence in class using ground up fluorite (Blue John) and heat it on a tin lid, being careful to wear safety goggles. Light comes out which has effectively been trapped in the rock. The intensity of light is related to the age of the rock and arises because over long periods of time the naturally occurring background radiation causes excitation of electrons in the crystal structure and defects. When the rock is heated the electrons are released from their excited energy levels and give out light as they fall back to their ground state.

Subscribe to get access to the content on this page.

If you are already a Tes/ Tes Scotland subscriber please log in with your username or email address to get full access to our back issues, CPD library and membership plus page.

Not a subscriber? Find out more about our subscription offers.
Subscribe now
Existing subscriber?
Enter subscription number

Comments

The guide by your side – ensuring you are always up to date with the latest in education.

Get Tes magazine online and delivered to your door. Stay up to date with the latest research, teacher innovation and insight, plus classroom tips and techniques with a Tes magazine subscription.
With a Tes magazine subscription you get exclusive access to our CPD library. Including our New Teachers’ special for NQTS, Ed Tech, How to Get a Job, Trip Planner, Ed Biz Special and all Tes back issues.

Subscribe now