• Why does the gyro do not fall when spinning?

    Why does the gyro do not fall when spinning?
    Of the thousands of people who used to play hard at their childhood, few people answered that question. The tick, whether turned upright or tilted, still doesn't fall like we
  • Use the hand to catch the bullet

    Use the hand to catch the bullet
    During the period of imperial war, a French pilot encountered a strange case. While flying at a height of 2 km, he noticed that a small object was moving in front of him.
  • The fastest spacecraft on the planet

    The fastest spacecraft on the planet
    For ships flying across the universe at speeds of thousands of kilometers per hour, the calculation of which ships move most quickly becomes an extremely complex task for
  • The birth place of the world's leading inventions

    The birth place of the world's leading inventions
    It was here that 6 new super heavy elements were invented, filling 6 empty cells in the Chemical Periodic Table. And that also attracts the admiration and footsteps of this
  • It has four times the speed of sound

    It has four times the speed of sound
    Airbus has unveiled a non-polluting airplane design that could shorten the flight time from London to Tokyo to 2 hours 30 minutes.
  • Speed can reach 500 km / h or higher

    Speed can reach 500 km / h or higher
    According to the Ministry of Railways, China has the technology to build high-speed trains that can reach speeds of 500 km / h or more by 2050.