454
P. Liu
Fig. 7.10 Trotting horse lamp
lamp. The airflow enters from under the lamp and then discharges upward
from the blade under the hook on the top of the lampshade, this process
continually circulates. It has been found that as the airflow passes through
the helical blade, it drives the blade to rotate, thereby rotates the lampshade
integrated with the axle. Looking out from the outside of the lampshade, it
becomes the scene of “Horses gallop and never stop”.
7.3 Rapid Development of Aircraft
Humans get inspiration from flying birds and yearn for flight, but they have
long been limited by knowledge. The desire for flying can only be pinned on
myths and delusions. Thanks to the history of more than 100 years in modern
times, human beings have truly realized the dream of soaring into the sky. On
December 17, 1903, the American Wright brothers (as shown in Fig. 7.11)
invented the first powered aircraft (as shown in Fig. 7.12) and successfully
completed the flight. Although the plane flew less than a minute, the descendants gave it a high rating—creating a new era of aviation for humanity.
After more than 100 years of hard work, human beings not only mastered
the mystery of flight but also overcomed various technical difficulties and
developed various aircraft with different uses. The aircraft became the most
important scientific and technological achievement of human beings in the
twenty-firstcentury and played a huge role in promoting the development of
P. Liu
Fig. 7.10 Trotting horse lamp
lamp. The airflow enters from under the lamp and then discharges upward
from the blade under the hook on the top of the lampshade, this process
continually circulates. It has been found that as the airflow passes through
the helical blade, it drives the blade to rotate, thereby rotates the lampshade
integrated with the axle. Looking out from the outside of the lampshade, it
becomes the scene of “Horses gallop and never stop”.
7.3 Rapid Development of Aircraft
Humans get inspiration from flying birds and yearn for flight, but they have
long been limited by knowledge. The desire for flying can only be pinned on
myths and delusions. Thanks to the history of more than 100 years in modern
times, human beings have truly realized the dream of soaring into the sky. On
December 17, 1903, the American Wright brothers (as shown in Fig. 7.11)
invented the first powered aircraft (as shown in Fig. 7.12) and successfully
completed the flight. Although the plane flew less than a minute, the descendants gave it a high rating—creating a new era of aviation for humanity.
After more than 100 years of hard work, human beings not only mastered
the mystery of flight but also overcomed various technical difficulties and
developed various aircraft with different uses. The aircraft became the most
important scientific and technological achievement of human beings in the
twenty-firstcentury and played a huge role in promoting the development of