I thought that infrared was actually "info-red" because it gives you more info about the thing your looking at than normal vision (I wasn't sure what the red part meant tho)
A childhood belief about physics

others believed things like this
- I used to believed that the children borned by tucking the finger info nunptial rings!!!— Silvia Mazzei
- I thought 'infrared' was the past of 'to infrare'.
— Lloyd B - I thought that exorcise and exercise both meant the same thing— Dobby Bob
- I thought I had X-ray vision and could talk to animals and they could understand me.— Kitty Lover
- I thought the phrase "At one's disposal" meant you should dispose of the person or thing.— Geirskogul
- I thought “guerrilla tactics” meant fighting like a gorilla— beating your chest and that sort of thing.— Kai