Welcome to practical physicsPracticle physics - practical activities designed for use in the classroom with 11 to 19 year olds

Reflection and refraction of particles

The world is bathed in light. But what is light, and how does it travel from one place to another? These experiments demonstrate the power and limitations of physical models, while also introducing the two contenders, waves and particles (corpuscles). 
Most teachers will want to do these as participative demonstrations, accompanied by considerable discussion - possibly including the history of relevant ideas and crucial experiments.


Particle model of reflection

Refraction of particles and of waves

Related Guidance

Light – waves or particles?

Asking questions

Demonstration or class experiment?

Using wave simulations 


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