when were screens for windows invented?

Answer 1

Back in the days before air conditioning-- most folks lived on farms and flies were everywhere. Then came science-- Pasteur ?--Florence Nightingale? -- Lister-- sound familiar--? These folks made a connection between disease and flies.-- and started a health revolution in this country.
It's interesting to me that when I lived in Germany in the early 60's screened windows were still not the norm-- however, the culture was that the women hung their feather beds over the open window sill to air them out every dry day-- and some still do. I was in Germany this spring-- and things are the same.
In their defense (as if they need one!)-- the typical German woman uses it up -- anything-- their trash is so little that their trash containers look like baby buggies in size-- they generally compost all kitchen waste and throughly package any meat byproducts for the trash when necessary. Flies lay their eggs on rotten meat/meat products-- so there isn't the opportunity there as is the case, here. Their dogs and cats are cleaned up after they have stools-- so no chance there, either.
A very interesting country- we could learn a lot from them.
Hope this history lesson wasn't too painful.....

Answer 2

I've always had to have a screen to run Windows. It's difficult to work on a computer without one.

Oh, I see! Sorry, misunderstood.