-- radio and TV
-- GPS
-- garage-door openers
-- cellular phones with mobile data
-- microwave ovens
-- "ham" radio
-- RADAR
-- tanning bed
-- CB radio
-- infrared lamp to keep food warm in a restaurant
-- CAT scan
-- MRI
-- dental X-ray
-- street lights
-- Air Traffic Control
-- CD and DVD players (laser)
-- cameras
Oh. I just read the question again, and I noticed that
you want explanations too. There are 17 examples
on my list, and that would take so much explaining
that I'm going to try and get away without it. I just
hope that the list itself is worth 5 points.