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“When the power of love overcomes the love of power, the world will know peace” – Jimi Hendrix

How does light travel?


How does light travel?

Light always travels in straight lines.


Seeing Objects


How does light help us in seeing an object?

If  light hits an object on the path that it is travelling, it can reflect and enter our eyes. Then we see the object.


Light changes it direction when it is reflected by a surface. As it hits it, it bounces off the surface at the same angle.


What can reflect light well?

Smooth, shiny surfaces can reflect light well.

E.g. – Mirrors and polished metals


What cannot reflect light well?

Dull and dark surfaces cannot reflect light well.

E.g. – Dark objects


Reflective surfaces


What are reflective surfaces?

Reflective surfaces are surfaces which can reflect light. There are many ways that reflective surfaces can be very helpful.


How can mirrors inside cars help drivers?

These mirrors inside the car reflect light so that drivers can see objects behind them.


How can reflective strips on clothing and bikes help drivers?

These things can help cyclists to be extra visible at night.


How can ‘Cat’s eyes’ on the road be useful?

Cat’s eyes are very useful at night as they reflect light from car headlamps so that the driver see the road at night.