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Using an infrared thermometer to measure temperature.

Explore the principles of steady state and feedback in a computer spreadsheet model using infrared radiation absorption by water and reflectivity investigation. Learn about positive and negative feedback in a bottle design, energy flow estimation, and global temperature change analysis.

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Using an infrared thermometer to measure temperature.

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  1. Using an infrared thermometer to measure temperature.

  2. The steady state bottle.

  3. A steady state is achieved when the inflow equals the outflow.

  4. Computer spreadsheet: Model 1

  5. Absorption of infrared radiation by water.

  6. Computer spreadsheet: Model 2

  7. Investigating the reflectivity of a surface using thermocolour film.

  8. Computer spreadsheet: Model 3

  9. The steady state bottle: negative feedback.

  10. The steady state bottle: positive feedback.

  11. Positive feedback: the weight of the bottle pressing on the outflow tube.

  12. Computer spreadsheet: Model 4

  13. Squeezing and releasing a plastic bottle with moist air.

  14. Adding smoke to the plastic bottle.

  15. Global temperature change model.

  16. Graph showing plot of annual global temperature anomalies.

  17. Monthly temperature and rainfall data for Reading.

  18. Estimating the energy flow from the Sun using a light bulb.

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