The passage asserts that Greek navies used a waepon named burning mirror to attack their enemies which it was made from a polished copper surface to focus sun's rays abd set enemies' ships on fire and provides three reasons of support. The lecture, on the contrary, debunks this passage' claim and says that the mentioned reasons provided by the passage is unconvincing.
First, the article claims that Greeks were not able to create an advanced mirror, since it needs a mirror with high power to intensify sunlight and it should be a parabolic shape. The professor casts doubt on this view by saying that people of ancient Greek need to use small pieces of copper to concentrate sunlight. They nevr use a single parabolic shape piece.
Second, the ships were made from wood and burning wood with a burning mirror needs about ten minute and ships are moving, since a burning mirror no longer is able to burn ships, according to the reading. The lecture repudiates this point by explaining that ancinet Greek people used some material to make ships water proof named pitch, so ships just need a few secons to burn and the burning mirror set ships on fire quickly.
Third, the author of the passage imparts that there was no need to create a mirror in ancient time, since Greeks had flaming arrows which were affective to set ships on fire. The professor disavows this idea by reasoning that flaming arrow was easy to observe, since they needed a device to focus sun's rays no linger be seen by enemy, as a result a burning mirror is magical and effective than flaming arrows.
The passage asserts that
Greek
navies
used
a
waepon
named
burning
mirror to attack their enemies which it
was made
from a polished copper surface to focus sun's rays
abd
set enemies'
ships
on fire and provides three reasons of support. The lecture,
on the contrary
, debunks this passage' claim and says that the mentioned reasons provided by the passage is unconvincing.
First
, the article claims that Greeks were not able to create an advanced mirror, since it
needs
a mirror with high power to intensify sunlight and it should be a parabolic shape. The professor casts doubt on this view by saying that
people
of ancient
Greek
need
to
use
small
pieces of copper to concentrate sunlight. They
nevr
use
a single parabolic shape piece.
Second, the
ships
were made
from wood and
burning
wood with a
burning
mirror
needs
about ten minute and
ships
are moving, since a
burning
mirror no longer is able to burn
ships
, according to the reading. The lecture repudiates this point by explaining that
ancinet
Greek
people
used
some
material to
make
ships
water proof
named pitch,
so
ships
just
need
a few
secons
to burn and the
burning
mirror set
ships
on fire
quickly
.
Third, the author of the passage imparts that there was no
need
to create a mirror in ancient time, since Greeks had flaming arrows which were affective to set
ships
on fire. The professor disavows this
idea
by reasoning that flaming arrow was easy to observe, since they needed a device to focus sun's rays no linger be
seen
by enemy,
as a result
a
burning
mirror is magical and
effective
than flaming arrows.