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===**Food And Phones || We will learn: About the properties of microwaves and infrared radiation || || How microwaves and infrared transmit energy to materials || || What microwaves are used for || **=== **Have you ever worried what your mobile phone might be doing to your brain? And is the radiation from mobile phone masts a danger to your health?

Mobile phones send out microwave signals. These are very low power- much less than those used in microwave ovens. The information carried by the telephone microwaves is transmitted from your phone to a radio mast.

To send a signal your phone needs to be able to "see" the mast. This is because microwaves cannot bend around corners or over buildings. Places that are not in line of sight with a mobile phone mast get poor signals. Mobile phone masts emit a lot more radiation than your phone does. This a mobile phone mast disguised as at tree!**
 * Microwaves are used everyday in cooking. Food can also be cooked in a conventional oven, heated by infrared radiation emitted by hot surfaces. Although it isn't obvious, both infrared and microwaves are similar.**
 * Like light, they are both waves carrying energy through the atmosphere. They have the same speed, only different frequencies.**
 * This crucial difference decides how much energy they can deliver to an atom or a molecule. Microwaves, with their low frequency, can't deliver enough energy to break a chemical bonds and can therefore be used by plants for photosynthesis.**
 * No amount of microwave radiation can make a plant turn water and carbon dioxide into glucose and oxygen- it will just shake the molecules around a bit.**
 * FACT**
 * Microwaves from a mobile phone are absorbed by your brain.**
 * FACT**
 * Some mobile phone masts are disguised as trees**
 * Quiz

Why might people worry about living close to a mobile phone mast?

What waves to mobile phones give out?

What will radiation do to a plant during photosynthesis?

Microwaves and Infrared waves have the smae speed but different....?

Microwaves cannot break a chemical bond. Why?

When can a Mobile Phone not give out a signal?**