|
Do you have an example?
It seems like it would have to be a duct rather than a vent. Something like an air curtain.
__________________
.
.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
________________
.
.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
|