Procedure:

1. Setup:

• Place the Leslie cube on a heatproof mat.
• Fill the cube with hot water from a kettle and place the lid on top.

2. Measurement:

• Use the infrared detector to measure the amount of infrared radiation emitted from each surface of the cube (shiny black, shiny silver, matt black, matt white).
• Ensure that the detector is the same distance from each surface for a fair test.

3. Recording Results:

• Draw a chart to show the amount of infrared radiation emitted from each type of surface.

Procedure: 4. Setup:

• Place an infrared heater with two metal plates on either side.
• One plate should have a shiny metallic surface, while the other should have a matt black surface.
• Attach a drawing pin using Vaseline on the outside surface of each plate.

5. Measurement:

• Switch on the heater and start timing.
• Observe that the temperature of the metal plates increases due to the absorption of infrared radiation.
• Record the time it takes for the vaseline to melt and for the drawing pins to fall off.