Most people believe that the first airplane was built and flown in 1903 by brothers Orville and Wilbur Wright. Yet there is some evidence that another inventor, Gustave Whitehead, may have built and flown an airplane in 1901, two years before the Wright brothers. Many critics, however, think that the evidence that Whitehead flew the first airplane has significant weaknesses.
First, Whitehead's alleged flight was reported by several newspapers in 1901. The newspaper reports do not seem very trustworthy, however. For example, none of the newspaper articles printed a photograph of the airplane in flight, the articles included only drawings of Whitehead's airplane. The lack of photographs suggests that the flight never actually occurred. In fact, journalists of that period sometimes invented exciting stores like this one to get people to buy more newspapers.
Second, the design of Whitehead’s airplane makes many experts doubt that it was capable of flight. Because early airplanes could not move as fast as today's planes do, most had two or three levels of wings to provide enough lift to permit the plane to rise off the ground. Whitehead's airplane was unique in this regard, having only one level of wings. With only a single set of wings and a relatively low flying speed, Whitehead's airplane seems unlikely to have gotten off the ground.
Third, it is also doubtful that the engine that Whitehead used in his airplane functioned well. In the early 1900s, Whitehead built a number of aircraft engines that he sold to other aircraft builders, but many of those builders failed to build functional airplanes. This poor success record brings his ability to build a functioning engine for his 1901 plane into serious doubt.
Both the lecture and the reading passage talk about the posibility of plane invention by Gustave whitehead, two years before the Wright brothers. The author bring three reasons that Whitehead's plane couldn't able to flight. But, the profossor casts doubts on them.
First, the writer believes that the newspapers which said Whitehead's airplane flighted do not seem trustworthy. They rumorded to sell more newspaper to people because there were no photograph exist when plane flighted. On the other hand, the profosser states that there weren't any camera could able to take photo in air, specially the Whitehead's flight in morning, and the photos of flight were very dim and had poor quality to publish.
Second, the author skeptics to the design of Whitehead's plane because it had only a single set of wings which couldn't able to fly. In contrast, the lecture declares that contemporary engineers simulates Whitehead's plane and prove that it can be able to fly.
Third, the writer says that Whitehead was not a good engineer because his engines sold to other aircraft builders didn't work properly. But, the lecturer claims that we should not blame Whitehead because many of modern aircraft builders' enginge have fault too.
Grammar and spelling errors:
Line 1, column 200, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: couldn't
...ing three reasons that Whiteheads plane couldnt able to flight. But, the profossor cast...
^^^^^^^
Line 3, column 271, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: weren't
...r hand, the profosser states that there werent any camera could able to take photo in ...
^^^^^^
Line 5, column 111, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: couldn't
...it had only a single set of wings which couldnt able to fly. In contrast, the lecture d...
^^^^^^^
Line 7, column 115, Rule ID: EN_CONTRACTION_SPELLING
Message: Possible spelling mistake found
Suggestion: didn't
...engines sold to other aircraft builders didnt work properly. But, the lecturer claims...
^^^^^
Line 7, column 250, Rule ID: HAVE_PART_AGREEMENT[1]
Message: Use past participle here: 'faulted'.
Suggestion: faulted
...f modern aircraft builders enginge have fault too.
^^^^^
Transition Words or Phrases used:
but, first, second, so, third, in contrast, on the other hand
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 4.0 10.4613686534 38% => More to be verbs wanted.
Auxiliary verbs: 3.0 5.04856512141 59% => OK
Conjunction : 4.0 7.30242825607 55% => More conjunction wanted.
Relative clauses : 10.0 12.0772626932 83% => OK
Pronoun: 13.0 22.412803532 58% => OK
Preposition: 22.0 30.3222958057 73% => OK
Nominalization: 1.0 5.01324503311 20% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1031.0 1373.03311258 75% => OK
No of words: 200.0 270.72406181 74% => More content wanted.
Chars per words: 5.155 5.08290768461 101% => OK
Fourth root words length: 3.76060309309 4.04702891845 93% => OK
Word Length SD: 2.4281628858 2.5805825403 94% => OK
Unique words: 127.0 145.348785872 87% => More unique words wanted.
Unique words percentage: 0.635 0.540411800872 118% => OK
syllable_count: 303.3 419.366225166 72% => OK
avg_syllables_per_word: 1.5 1.55342163355 97% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 3.25607064018 31% => OK
Article: 8.0 8.23620309051 97% => OK
Subordination: 0.0 1.25165562914 0% => More adverbial clause wanted.
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 10.0 13.0662251656 77% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 20.0 21.2450331126 94% => OK
Sentence length SD: 43.5739601138 49.2860985944 88% => OK
Chars per sentence: 103.1 110.228320801 94% => OK
Words per sentence: 20.0 21.698381199 92% => OK
Discourse Markers: 6.1 7.06452816374 86% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 5.0 4.19205298013 119% => OK
Sentences with positive sentiment : 1.0 4.33554083885 23% => More positive sentences wanted.
Sentences with negative sentiment : 6.0 4.45695364238 135% => OK
Sentences with neutral sentiment: 3.0 4.27373068433 70% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.119129514162 0.272083759551 44% => OK
Sentence topic coherence: 0.048471375145 0.0996497079465 49% => OK
Sentence topic coherence SD: 0.0516728724627 0.0662205650399 78% => OK
Paragraph topic coherence: 0.0698127778772 0.162205337803 43% => OK
Paragraph topic coherence SD: 0.0361177645088 0.0443174109184 81% => OK
Essay readability:
automated_readability_index: 12.9 13.3589403974 97% => OK
flesch_reading_ease: 59.64 53.8541721854 111% => OK
smog_index: 3.1 5.55761589404 56% => Smog_index is low.
flesch_kincaid_grade: 9.9 11.0289183223 90% => OK
coleman_liau_index: 12.65 12.2367328918 103% => OK
dale_chall_readability_score: 8.18 8.42419426049 97% => OK
difficult_words: 45.0 63.6247240618 71% => More difficult words wanted.
linsear_write_formula: 7.5 10.7273730684 70% => OK
gunning_fog: 10.0 10.498013245 95% => OK
text_standard: 10.0 11.2008830022 89% => OK
What are above readability scores?
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Rates: 70.0 out of 100
Scores by essay e-grader: 21.0 Out of 30
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Note: 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.