Questions tagged [air]

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

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16 votes
1 answer
9k views

Do beeswax candles "purify" the air?

It's a common claim on sites promoting beeswax candles over paraffin or soy candles that they "purify" the air and reduce allergies and asthma (Cleanup Expert,Ebeehoney, Pathways Arts, ...
Cecilia's user avatar
  • 269
7 votes
1 answer
1k 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 ...
Ionică Bizău's user avatar
11 votes
1 answer
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 ...
PermanentGuest's user avatar
14 votes
2 answers
6k 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 ...
osgx's user avatar
  • 843
4 votes
0 answers
748 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 ...
Suma's user avatar
  • 6,126
10 votes
1 answer
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 ...
Highly Irregular's user avatar
12 votes
2 answers
821 views

Is the ozone in the Sharper Image Air Ionizer unhealthy or can it cause asthma?

The Sharper Image Air Ionizer was a hot seller a few years ago, and a few models included an "Ozone" feature. This blue light would create O3, and supposedly were useful for cleaning the air. I've ...
makerofthings7's user avatar