Both Ashley Simmons and M Boyask (Letters, May 12) make the absurd error of lumping all types of radiation together in their ridiculous criticisms of Graham Chainey.

Mr Chainey's original letter (May 9) only referred to wi-fi, yet M Boyask ridicules him for suggesting we get rid of radio, TV and radiotherapy, which he did not even mention. Mr Simmon's attack on Mr Chainey as "steeped in misinformation"

is laughable considering he himself believes the sun emits much more of the same type of radiation as wi-fi.

The microwave radiation emitted by the sun is millions of times weaker, as is natural background microwave radiation.

  • Gary Kemp, Stanford Avenue, Brighton