Leslie’s cube Required Practical Flashcards
Can humans see infrared
No
What is the practical including the Leslie’s cube
To test how much infrared is emitted via different surfaces
Name the 4 sides on a Leslie’s cube
Shiny metallic, white, shiny black and Matt black
What does a Matt surface mean
That it isn’t shiny
How do we record the amount of infrared emitted via a surface on a Leslie’s cube
By pointing an infrared detector at each of the four sides
What is important to keep the same ( control variable ) in the Leslie’s cube practical.
The same distance between the Leslie’s cube and the infrared detector making the measurements repeatable
What is the surface which emits the most and least amount of infrared on a Leslie’s cube
Most - Matt black
Least- shiny metallic
Name the order of surfaces with the most infrared emitted first (Leslie’s cube)
Matt black, shiny black, white, shiny metallic
If we are unable to use an infrared detector what can we use instead (Leslie’s cube)
A thermometer with the bulb painted black
What is the resolution of the thermometer in regards to infrared detector
The resolution thermometer is less than the infrared detector
What is the resolution within the Leslie’s cube practical
The resolution is the smallest change that can be detected
State a difference between the use of a thermometer and an infrared detector (Leslie’s cube practical)
The use of a thermometer is less likely to detect a difference across the surfaces but the use of an infrared detector is more likely to detect a difference
Where is the placement of each item in the Leslie cube practical to find the difference across surfaces on the cube
The Leslie cube is placed in between two metal plates with an infrared detector and a infrared heater in front
What are the two metal plates made of either side of a Leslie cube
One is painted Shiny metallic paint and the other is painted Matt black
What are attached to the two metal plates either side of a Leslie cube
Drawing pins attached by vaseline
