 This flight lasted only 12 seconds but it was nevertheless the first in the history of the world in which a machine carrying a man had raised itself by its own •power into the air in full flight' had sailed forward without reduction of speed and had...  Outlook and Independent - الصفحة 1631908عرض كامل - لمحة عن هذا الكتاب
 | Francis Arnold Collins - 1910 - عدد الصفحات: 330
...December, 1903. The first flight lasted only twelve seconds, a flight very modest compared with that of birds, but it was, nevertheless, the first in the...history of the world in which a machine carrying a man 211 had raised itself by its own power into the air in free flight, had sailed forward on a level course... | |
 | american school of correspondence - 1912 - عدد الصفحات: 820
...of birds, but it was, nevertheless, the Fig. 9. One of the First Power Flights of the Wright Biplane first in the history of the world in which a machine...sailed forward on a level course without reduction in speed, and had finally landed without being wrecked. The second and third flights were a little... | |
 | American School (Lansing, Ill.) - 1912 - عدد الصفحات: 80
...of birds, but it was, nevertheless, the Fig. 9. One of the First Power Flights of the Wright Biplane first in the history of the world in which a machine...sailed forward on a level course without reduction in speed, and had finally landed without being wrecked. The second and third flights were a little... | |
 | 1918 - عدد الصفحات: 708
...flight was equivalent to a flight of 540 feet made in calm air. This flight lasted only 12 seconds, but it was nevertheless the first in the history of...had raised itself by its own power into the air in full flight, had sailed forward without reduction of speed, and had finally landed at a point as high... | |
 | Evelyn Charles Vivian - 1921 - عدد الصفحات: 648
...conquest than that of Watt. Four flights in all were made; the first lasted only twelve seconds, ' the first in the history of the world in which a machine carrying a man had raised itself into the air by its own power in free flight, had sailed forward on a level course without reduction... | |
 | Thomas Hart Kennedy - 1924 - عدد الصفحات: 218
...flight was equivalent to a flight of 540 feet made in a calm day. The flight lasted only twelve seconds, but it was nevertheless the first in the history of...had raised itself by its own power into the air in full flight, had sailed forward without reduction of speed, and had finally landed at a point as high... | |
 | John Lord - 1924 - عدد الصفحات: 1012
...The short distance covered was due to the strong head wind, and the flight only lasted 12 seconds, but it was nevertheless the first in the history of...carrying a man had raised itself by its own power in full flight, had sailed forward without reduction of speed, and had finally landed at a point as... | |
 | 1927 - عدد الصفحات: 842
...flight was equivalent to a flight of 540 feet made in calm air. This flight lasted only twelve seconds but it was, nevertheless, the first in the history...had raised itself by its own power into the air in full flight, had sailed forward without reduction of speed, and had finally landed at a point as high... | |
 | 1927 - عدد الصفحات: 226
...flight was equivalent to a flight of 540 feet made in calm air. This flight lasted only twelve seconds but it was, nevertheless, the first in the history...had raised itself by its own power into the air in full flight, had sailed forward without reduction of speed, and had finally landed at a point as high... | |
 | Ernest Edward Walker - 1927 - عدد الصفحات: 156
...first one of these lasted only twelve seconds, a flight very modest compared with that of the bird's, but it was, nevertheless, the first in the history of the world in which a machine carrying a man — Orville Wright — had raised itself by its own power into the air in free flight, had sailed forward... | |
| |
