Reflection, Absorption & Transmission (OCR GCSE Physics A (Gateway Science Suite)): Flashcards
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Practise the cards
12 cards from this deck
Three wave interactions at material boundaries
Three wave interactions at material boundaries
Reflection, absorption, transmission
Angle of incidence equals what?
Angle of incidence equals what?
Angle of reflection
Effect of smooth surfaces on reflected waves
Effect of smooth surfaces on reflected waves
Stronger reflected waves
Why rough surfaces appear matt
Why rough surfaces appear matt
They scatter light in all directions
What is transmission?
What is transmission?
Waves passing through a transparent material
How does transparency affect light transmission?
How does transparency affect light transmission?
More transparent = more light passes through
When does light absorption occur?
When does light absorption occur?
When light frequency matches electron energy levels
What happens to absorbed light energy?
What happens to absorbed light energy?
Reemitted over time as heat
Why does a green object appear green?
Why does a green object appear green?
Only green light is reflected
What happens to non-green light on green object?
What happens to non-green light on green object?
Absorbed
Role of electrons in reflection
Role of electrons in reflection
Absorb light energy, then reemit as reflected wave
Conditions for light to reflect
Conditions for light to reflect
Object is opaque & light not absorbed by material