====== BRAINBOX - HEAT LAB-02 ======
=== Students learn: ===
^Curriculum  ^Learning Activities          ^
|SCIENCE     |Identify scientific principles required to solve challenge|
|TECHNOLOGY  |Record and estimate timing data|
|ART         |Blended multimedia elements |
|ENGINEERING |Design, build and test machine(s)   |
|MATHEMATICS |Use comparative data find and define a time-line|

=== Leslie's cube  ===
Leslie's cube is [[https://www.youtube.com/watch?v=D1PJQMXYiH8|a simple metal container (e.g. empty Milo tin)]] that with four differently painted sides/sections. If it is filled with hot water (at a safe temperature to avoid burns), you can use either your hands or a thermopile connected to a meter to try and decide which surfaces give out the most heat radiation.

Remember that as the water temperature the same throughout the container, all the sides of Leslie's cube are at the SAME TEMPERATURE but touch/measurement reveals that some surfaces give out more heat radiation than others.

Leslie's cube can provide evidence to help show that:
  - Heat radiation travels through solids
  - Black surfaces are relatively good emitters of heat radiation
  - Black surfaces are relatively good absorbers of heat radiation
  - Red surfaces are not as good radiators as black surfaces
  - Blue surfaces are not quite as good radiators as red surfaces.
  - Measurements around the interior of the container remain relatively constant
  - Temperature varies vertically  - no matter what the external colour
  - Shiny surfaces are relatively good

=== Some example questions: ===
For most efficient interior heating and cooling of a car:
  * Does the colour of a car make any difference?
  * Does it make any difference if the car is shiny or not?
  * What is the best colour to have if you want a car to stay cool in summer sun?
  * What is the worst colour to have if you want a car to stay cool in summer sun?
  * What are the most environmentally friendly and cheapest ways to keep a car cool in summer.