for questions about claims based on the gaseous mixture comprising the Earth's atmosphere.
Questions tagged [air]
6 questions
16
votes
1 answer
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, WarmCandle).
There does seem to be clear evidence that beeswax…
Cecilia
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13
votes
2 answers
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 extinct giant reptilians and other non-avian…
osgx
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11
votes
1 answer
Can the oxygen levels in a polluted city be as low as 11%?
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 pollution. Can this be really true? Even if lot of…
PermanentGuest
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10
votes
1 answer
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 various claims around the place about the benefits of…
Highly Irregular
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7
votes
1 answer
Is it true that other cultures don't see having two windows opened as a health risk?
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 opened (or a window and a door, or two doors etc).…
Ionică Bizău
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4
votes
0 answers
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 and concentration of mixed gases measured in a…
Suma
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