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Questions tagged [air]

for questions about claims based on the gaseous mixture comprising the Earth's atmosphere.

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7
votes
1answer
946 views

Is it true that other cultures don't see having two windows opened as a health risk? [closed]

I live in Romania and since I was a kid, I heard people talking about something we call, here in Romania, current—basically, the air flow which is being formed if at least two exterior windows are ...
11
votes
1answer
3k views

Can the oxygen levels in a polluted city be as low as 11%? [closed]

Normal levels of oxygen in atmosphere is around 21%. Recently in a discussion somebody commented that the polluted cities like Delhi has only 11% of oxygen in its atmosphere on some peak days of ...
13
votes
2answers
5k views

What was the density of prehistoric Earth atmosphere (dinosaurs buoyancy theory)

There is a site by David Esker named Dinosaur Theory: dinosaurtheory.com. David says that dinosaurs was so big because the early (at dinosaurs age) earth atmosphere was very dense and most mass of ...
4
votes
0answers
614 views

Is typical indoor concentration of VOC correlated to concentration of CO₂?

A vendor of VOC (Volatile Organic Compound) sensor claims the VOC concentration correlates highly to CO₂ concentration in a typical conference room: Figure 2 illustrates the correlation of true CO₂ ...
9
votes
1answer
9k views

Do air ionizers have any substantial benefits or risks?

This question regarding an ionizer in an Asus laptop has a little bit of information about air ionizers (air ionisers for those using UK English), but not a lot at the time of writing. There are ...