There are many different kinds of electromagnetic waves. Only a small amount can be seen with the human eye. This is called visible light. With special equipment other types of electromagnetic waves can be seen. In this case, infrared rays are being seen. They are similar to visible light, but cannot be seen by the human eye, as they have longer wavelengths than the eye can perceive. Some are reflected, some are absorbed and some are transmitted. In this case, the amount of heat absorption is seen. Objects being seen as blue are the coolest and the objects being seen as white, are the warmest. Clearly, this demonstrates that some electromagnetic waves that can’t be seen with the naked eye can be detected if the right instruments are used.

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Supriya Thukral
Sir John A. Macdonald Secondary School, Waterloo, ON
Second Prize ( High School Individual Category )

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