Planets

Had a chat with my nephew last night about intelligent things: physics, astronomy and the like.

Well, he said intelligent things and I tried to remember stuff I learned in school. A long time ago.

Is light a wave or a particle for example? The sort of thing a blipper might know perhaps. Or Prof Brian Cox.

Anyway, tonight that got me thinking about other things you learn in school but can't always remember later.

Like how to sew on a button. I did my best but I predict it will fall off about 11am tomorrow morning.