Waves 4.6.3.2 ONLY Flashcards
How can radio waves be produces?
Oscillations in electrical circuits
What happens when radio waves are absorbed?
They may create an alternating current with the same frequency as the radio wave 10^2
They can induce oscillations in electrical currents
What can changes in the nuclei of an atom result in?
Electromagnetic waves being generated / absorbed over a wide frequency range
Where do gamma rays originate from?
Changes in the nuclei of an atom
What can ultra violet / X-ray / gamma rays have a negative effect on?
On human body tissue
The effects depend on the type of radiation + radiation dose
What’s radiation dose
Measure of the risk of harm resulting in a form of exposure of the body into radiation
What’s 1 Sv = to I’m mSv
1000 millisieverts
What can ultraviolet waves cause
Premature skin aging
Increase skin cancer risk
What can X-rays / gamma rays cause?
They’re ionising radiation can cause gene mutations and cancer
