Videos Tagged: invention

History
History of Helicopters
youtube icon
44:22

The earliest invention for vertical flight that we know comes from China. It is known that since 400 years BC, children in China played with bamboo flying toys. Children attached a stick to a ro...

  • 6,278
  • 4 years ago
  • 8(1)
Latest Articles
Diet can alter estrogen and testosterone levels significantly, which further impact the development of human physical form.
  • 72
  • 2 days ago
With a length of 53.8km, Seikan connects the islands Honshu and Hokkaido
  • 79
  • 3 days ago
One of the best aspects of the caves are the fabulous colors. The colors are taken directly from the Earth itself. Those...
  • 139
  • 1 week ago
Her calling card was her robe de style dress. This gown hung straight and narrow on the torso, but then ballooned out wi...
  • 143
  • 1 week ago
It is one of the oldest and most-widely used scales to describe sexual orientation. While it is outdated, the scale was ...
  • 214
  • 1 week ago