ip1.27.7 dangers of high energy electromagnetic waves © oxford university press 2011 dangers of...
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IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
Dangers of high energy electromagnetic waves
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
There are hazards associated with different parts of the electromagnetic spectrum. In particular ultraviolet, X-rays and gamma rays can be very hazardous.
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
Electromagnetic wave Some uses
Ultraviolet Detecting fake bank notes, sun tanning, sterilising drinking water
X-rays Detecting broken bones, looking for defects in metal products
Gamma rays Sterilising medical equipment, killing cancerous cells
These electromagnetic waves have very short wavelengths and transfer the most energy. These properties make ultraviolet, X-rays and gamma rays ideal for a variety of purposes. However, they can travel through many materials and potentially damage or kill human cells. Care must be taken to reduce your exposure to this part of the spectrum.
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
How do you think we can protect ourselves from X-rays?
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
If you’ve ever had an X-ray, you might have had to wear a lead apron to absorb some of the X-rays.
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
How can you protect yourself from ultraviolet rays?
IP1.27.7 Dangers of high energy electromagnetic waves
© Oxford University Press 2011
The use of sunscreen helps protect you from ultraviolet. The sunscreen not only prevents sunburn, but also reduces your risk of developing skin cancer.