TPO30
In the reading passage, the author asserts that story about defending the city of Syracuse with burning mirror by the Greeks is not a valid story and Geeks of Syracuse never really build such a device. The author provides three reasons to support the statement. On the other hand, the lecturer closely examines each of three reasons and reveals that the argument relies on doubtful assumptions which render it unconvincing.
Firstly, the writer points out that ancient greeks were not technologically advanced enough to make such device. The professor views this point from an another angle and explains that burning mirror was not made by just one single mirror instead, it was made using dozens of the small copper surface. In addition, the ancient Greeks were able to make precise parabolic curvature since they were aware of mathematics at that time.
Furthermore, the author claims that burning mirror would take a long time to set the ships on fire. The passage further refers to results of an experiment that showed for an object with 30 meters long it took ten minutes to set the object on fire. The lecturer definitely refutes this point by saying that the conducted experiment just used a wood for the material of object while, the Roman ships were made with woods and kinds of sticky pitch material. He further explains that this pitchy material fire in just seconds and it spreads to woods of ship in short time. Thus, the burning mirror is an effective device to burn the Roman ships.
Finally, the author states that burning mirror does not seem like an improvement on a flaming arrows weapon which Greeks used to shoot at enemy's ships. The lecturer casts doubts on this issue and says that Roman soldiers were familiar with flaming arrows at that time but, burning mirrors were surprising for them since they did not know the source of the sun rays. She further explains that since the new device was more surprising than older devices, it could have been more effective and lethal.
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Grammar and spelling errors:
Line 3, column 150, Rule ID: AN_ANOTHER[1]
Message: One of these determiners is redundant in this context. Choose only one: 'an angle' or 'another angle'.
Suggestion: an angle; another angle
...ce. The professor views this point from an another angle and explains that burning mirror was no...
^^^^^^^^^^^^^^^^
Discourse Markers used:
['but', 'finally', 'first', 'firstly', 'furthermore', 'really', 'second', 'so', 'thus', 'while', 'in addition', 'in short', 'on the other hand']
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance in Part of Speech:
Nouns: 0.256130790191 0.261695866417 98% => OK
Verbs: 0.16348773842 0.158904122519 103% => OK
Adjectives: 0.0844686648501 0.0723426182421 117% => OK
Adverbs: 0.0626702997275 0.0435111971325 144% => OK
Pronouns: 0.0272479564033 0.0277247811725 98% => OK
Prepositions: 0.136239782016 0.128828473217 106% => OK
Participles: 0.0381471389646 0.0370669169778 103% => OK
Conjunctions: 2.2900113639 2.5805825403 89% => OK
Infinitives: 0.0245231607629 0.0208969081088 117% => OK
Particles: 0.00272479564033 0.00154638098197 176% => OK
Determiners: 0.128065395095 0.128158765124 100% => OK
Modal_auxiliary: 0.00544959128065 0.0158828679856 34% => OK
WH_determiners: 0.00817438692098 0.0114777025283 71% => OK
Vocabulary words and sentences:
No of characters: 2005.0 1645.83664459 122% => OK
No of words: 342.0 271.125827815 126% => OK
Chars per words: 5.86257309942 6.08160592843 96% => OK
Fourth root words length: 4.30037696126 4.04852973271 106% => OK
words length more than 5 chars: 0.353801169591 0.374372842146 95% => OK
words length more than 6 chars: 0.222222222222 0.287516216867 77% => OK
words length more than 7 chars: 0.12865497076 0.187439937562 69% => OK
words length more than 8 chars: 0.0614035087719 0.113142543107 54% => OK
Word Length SD: 2.2900113639 2.5805825403 89% => OK
Unique words: 176.0 145.348785872 121% => OK
Unique words percentage: 0.514619883041 0.539623497131 95% => OK
Word variations: 54.1123831116 53.8517498576 100% => OK
How many sentences: 14.0 13.0529801325 107% => OK
Sentence length: 24.4285714286 21.7502111507 112% => OK
Sentence length SD: 46.8639476766 49.3711431718 95% => OK
Chars per sentence: 143.214285714 132.220823453 108% => OK
Words per sentence: 24.4285714286 21.7502111507 112% => OK
Discourse Markers: 0.928571428571 0.878197800319 106% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 1.0 3.39072847682 29% => OK
Readability: 46.6507936508 50.5018328374 92% => OK
Elegance: 1.69892473118 1.90840788429 89% => OK
Coherence and Cohesion:
Essay topic to essay body coherence: 0.749978179473 0.549887131256 136% => OK
Sentence sentence coherence: 0.135583218706 0.142949733639 95% => OK
Sentence sentence coherence SD: 0.0820538375534 0.0787303798458 104% => OK
Sentence paragraph coherence: 0.5962153617 0.631733273073 94% => OK
Sentence paragraph coherence SD: 0.0964415977405 0.139662658121 69% => OK
Sentence topic coherence: 0.347395210622 0.266732575781 130% => OK
Sentence topic coherence SD: 0.110728857038 0.103435571967 107% => OK
Paragraph paragraph coherence: 0.377529070629 0.414875509568 91% => OK
Paragraph paragraph coherence SD: 0.0341669676121 0.0530846634433 64% => OK
Paragraph topic coherence: 0.534653320229 0.40443939384 132% => OK
Paragraph topic coherence SD: 0.0635167827704 0.0528353158467 120% => OK
Task Achievement:
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 7.0 4.45695364238 157% => OK
Sentences with neutral sentiment: 2.0 4.26048565121 47% => OK
Positive topic words: 4.0 3.49668874172 114% => OK
Negative topic words: 7.0 3.62251655629 193% => OK
Neutral topic words: 1.0 3.1766004415 31% => OK
Total topic words: 12.0 10.2958057395 117% => OK
What are sentences with positive/Negative/neutral sentiment?
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Rates: 86.6666666667 out of 100
Scores by essay e-grader: 26.0 Out of 30
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Note: This is not the final score. The e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.