The reading and lecture are both about some commonly used air purifiers. Where as the author of the reading states pros of these purifiers, the lecturer suggests that there are some cones for each filter. The lecturer casts doubts on the main points made in the reading by providing three reasons.
First of all, the according to the reading, HEPA filters are capable in trapping large pollutant particles without producing secondary pollution. However, the lecturer disputes this point. He says that these filters are incapable in getting rid from small particles like viruses. Furthermore, he mentions that these viruses grow and multiply on the filter itself and then get mix with the air it produce. Hence, cause pollution.
Secondly, the reading states that ozone generating filters remove airbone chemicals by help of ozone reaction and than producing a pleasant smell. Nevertheless, the lecturer refutes this argument. he argues that these filters are hazardous. As ozone generated by these filters is very high in concentration which can be harmful for our body and can cause skin irritation and could be extreme dangerous for eyes. Furthermore, he added that ozone react same as gasoline and that's why it make it even more dangerous.
Finally, the reading claims that uv air purifiers remove bacterias from air which are harmful and it operate quietly. On the other hand, the lecturer belives that these filters can not clear microscopic particles like dust and also fail in removing unpleasant smell from air.
In conclusion, although the reading and lecture are both about air purifiers, the three main points made in the reading are effectively challenged by the lecturer.
The
reading
and lecture are both about
some
commonly
used
air
purifiers
.
Where as
the author of the
reading
states pros of these
purifiers
, the
lecturer
suggests that there are
some
cones for each
filter
. The
lecturer
casts doubts on the main points made in the
reading
by providing three reasons.
First of all
, the according to the
reading
, HEPA
filters
are capable in trapping large pollutant particles without producing secondary pollution.
However
, the
lecturer
disputes this point. He says that these
filters
are incapable in getting
rid from
small
particles like viruses.
Furthermore
, he mentions that these viruses grow and multiply on the
filter
itself and then
get
mix with the
air
it produce.
Hence
, cause pollution.
Secondly
, the
reading
states that ozone generating
filters
remove
airbone
chemicals by
help
of ozone reaction and
than
producing a pleasant smell.
Nevertheless
, the
lecturer
refutes this argument.
he
argues that these
filters
are hazardous. As ozone generated by these
filters
is
very
high in concentration which can be harmful for our body and can cause skin irritation and could be extreme
dangerous
for eyes.
Furthermore
, he
added
that ozone react same as gasoline and that's why it
make
it even more
dangerous
.
Finally
, the
reading
claims that
uv
air
purifiers
remove
bacterias
from
air
which are harmful and it
operate
quietly
.
On the other hand
, the
lecturer
belives
that these
filters
can not
clear
microscopic particles like dust and
also
fail in removing unpleasant smell from air.
In conclusion
, although the
reading
and lecture are both about
air
purifiers
, the three main points made in the
reading
are
effectively
challenged by the
lecturer
.