Attention: I'm not a teacher.
Hi jctgf,
To tell you the truth, I have to keep quiet concerning the present thread but I couldn’t bridle my tongue especially when I’m itching to speak. There are more words that back up your speculation.
Air plain = open air en plein air
in the open / out / out-of-doors / outdoors
How fast dous a person fall out of an air plain?
Answer
About 55 meters per second is "terminal velocity".
Learn how to paint with oils in plain air in this free instructional video art lesson on oil painting.
New “Biofuel Cell” Produces Electricity from Hydrogen in Plain Air.
I think the Directory is a wonderful tool, and it’s working for me. The Web site has been extremely useful. I direct people to it, not just for my work, but so they will gain an understanding of what plain air painting is all about.”
Plain air outdoor furniture.
Plain air painter of nature, landscapes, and still life.
The evocative sentence comes in fact from a little book called La Cuisine en Plein Air by that most adorable of French gastronomes,
It was painted in 1814 and is one of a group of works executed en plein air in Rome during the artist's three year stay in that city.
Ralph had recognised the quality of those intimate plein air sketches of Welsh valleys.
Regards.
V.