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Physics - 21st Century Mobilephones

Extracts from this document...

Introduction

Are they a risk to your health?

What are we worried about?

Up till now- - the year 2007 approximately 3.14 billion people around the world have brought mobile phones. That almost half the world’s population and the number are still growing.

When you use your mobile phone, it gives out radiation in all directions – some goes through you. This radiation is the same as the radiation used in microwaves to cook food. The amount of radiation being emitted is small but is it harmless?

The aim of my case study is to analyze the facts and I shall write about if the claims made are true and in the end I will try to come to my own conclusion to say if mobile phones are dangerous or not.

Content

Page 1

Introduction

Page 2

Contents page

Page 3

What is inside a mobile phone?

About Microwave radiation

Page 4

Electro Magnetic Spectrum diagram

Page 5

Ionising radiation

Non-ionising radiation

Page 6

Do microwaves cause harm?

Page 7

Tumours

Page 8

Cell structure and activity

Are children more at risk?

Page 9

ALARA

Page 10

Conclusion

Page 11

Evaluation

Bibliography

What is inside a mobile phone?

The inside of a mobile phone usually consists of a circuit board, an LCD display to view all the functions of your mobile phone, a microphone so you can speak in to your phone, a loudspeaker so you can hear what people are saying to you

...read more.

Middle

 to ionize atoms or molecules - that is, to completely remove an electron from an atom or molecule.

The composition of this radiation can vary depending on what may be ionized. Visible light, near ultraviolet, infrared, microwave and radio waves are all examples of non-ionizing radiation, though visible and near ultraviolet can also ionize some molecules. The light from the Sun that reaches the earth is largely composed of non-ionizing radiation, with the notable exception of some ultraviolet rays. However, most ionizing radiation is filtered out by the atmosphere.

‘Because it is lower energy radiation, the use of this type of radiation in medical fields and everyday life poses fewer health risks than ionizing radiation in forms such as X-rays’. [7]

Do microwaves cause harm?

‘Most scientific evidence has found that adverse reactions have found no short term effects but the long term effects are yet unknown for using mobile phones’. [8] Theses effects may not be clear until our generation reaches middle age.

Here are some of the effects which have been claimed as a result of excess mobile phone usage:

Tumours / Cancer

Mainly in the head, tumours most likely are to occur on the brain due to excess mobile phone usage. Cancer can also be caused by cell structure alteration (mutation)

Other problems associated with microwave radiation include; fatigues, headaches, learning problems, sleep disorders (insomnia) and memory loss. [9] These may well be linked to ‘over use’

...read more.

Conclusion

Website that can be changed by the public so it is less reliable so it can be changed

[5] –

http://www.crisp.nus.edu.sg/~research/tutorial/emsp1.gif

- (16-03-07)

Source of a mobile phone is from a commercial site so it cannot be as reliable as a source from a scientific journal

[6] –

http://en.wikipedia.org/wiki/Ionizing_radiation- (16-03-07)

Website that can be changed by the public so it is less reliable so it can be changed

[7] –

http://www.gaurdian.co.uk/science_theory_radiationtypes

- (16-03-07)

Newspaper but could be exaggerated only if it from a tabloid, this is not from a tabloid and has been published by an official scientist.

[8] -

www.tcodevelopment.org/pls/nvp/documentation- (16-03-07)

Unknown research website, is very reliable in its knowledge because it was published by a scientist, work submitted was evaluated and viewed by colleagues in the scientific community.

[9] –

http://www.nhsfoundation.org/mobile_phone_usage

- (16-03-07)

Official NHS website so article published was submitted by doctors who work for the National Health Service, but could be false to meet government standards.

[10] –

Newspaper article from – The Daily News (American Newspaper) – Date - April 25th 2006 - (16-03-07)

Newspaper but could be exaggerated only if it from a tabloid, this is not from a tabloid and has been published by an official scientist.

[11] –

Newspaper article from – The Sunday Mirror (British Newspaper) - Date – December 27th 2006 - (16-03-07)

Newspaper but could be exaggerated only if it from a tabloid, this is not from a tabloid and has been published by an official scientist.

...read more.

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