What am I?

A flash of light on a grey day. If you're made of metal, you best stay away. What am I?

related riddles

I have a leg but I do not move, A face but no expression, Be it wind or rain I stay outside. What am I?

I turn everything but l do not move.what am l

You use me daily without knowing. The only time you acknowledge me is when you don’t understand me. What am I?