Discover and read the best of Twitter Threads about #ionization
Most recents (3)
@yessmanstu @GeraldKutney @goddeketal Military or no military,
the climate is changing fast
bc of increased carbon dioxide
in the infrared zone
of the atmosphere.
The physical properties
of carbon dioxide
include interacting
w long wave infrared energy
passing through.
FAQs here news.climate.columbia.edu/2021/02/25/car…
the climate is changing fast
bc of increased carbon dioxide
in the infrared zone
of the atmosphere.
The physical properties
of carbon dioxide
include interacting
w long wave infrared energy
passing through.
FAQs here news.climate.columbia.edu/2021/02/25/car…
@yessmanstu @GeraldKutney @goddeketal This is a similar explanation to how other molecules (with different properties) absorb different wavelengths of light (energy)
#physics #STEMeducation
Every molecule is different, and it has to do w how many electrons can move and change their orbitals
chem.libretexts.org/Bookshelves/Ph…
#physics #STEMeducation
Every molecule is different, and it has to do w how many electrons can move and change their orbitals
chem.libretexts.org/Bookshelves/Ph…
@yessmanstu @GeraldKutney @goddeketal Molecular orbital diagrams talk about where electrons likely are in any given combination of elements. chem.libretexts.org/Bookshelves/In…
For CO2 the way the electrons spin depends on how much energy the molecule has, and the levels look like this (MO diagram from flickr.com/photos/6905729…)
For CO2 the way the electrons spin depends on how much energy the molecule has, and the levels look like this (MO diagram from flickr.com/photos/6905729…)
Frequently questions about type of room air filtration & if #ionization is a useful upgrade.
Nearly always, simple filtration is sufficient for most people. Study here shows a bipolar ionizer also *not* useful at reducing PM2.5. Thx @JimRosenthal4. (1/x)
sciencedirect.com/science/articl…
Nearly always, simple filtration is sufficient for most people. Study here shows a bipolar ionizer also *not* useful at reducing PM2.5. Thx @JimRosenthal4. (1/x)
sciencedirect.com/science/articl…
2/ "[experiments] ... suggest that operation of the ionizer unit led to a small increase in loss rates for ultrafine particles (<0.15 μm) and a small decrease in loss rates for larger particles (>0.3 μm), but with negligible net changes in estimated PM2.5 loss rates."
3/ In contrast to relative ineffectiveness of ionization technology to reduce concentration of suspended particles in a room, simple #HEPA filtration does an *excellent* job. See e.g. examples in this 🧵 showing filtration in a school classroom.
“As officials search for solutions to protect classrooms from the novel coronavirus. Unfortunately, in this case, school administrators may have fallen for snake oil, and taxpayers are footing the bill.”
“Most tested the ionization devices on small rooms or tiny chambers without sufficient controls. Moreover, none of the research is peer-reviewed.”
