个人资料图片
English
  • 全部
  • 搜索
  • 图片
  • 视频
    • 短视频
  • 地图
  • 资讯
  • 更多
    • 购物
    • 航班
    • 旅游
  • 笔记本
报告不当内容
请选择下列任一选项。
  • 时长
    全部短(小于 5 分钟)中(5-20 分钟)长(大于 20 分钟)
  • 日期
    全部过去 24 小时过去一周过去一个月去年
  • 清晰度
    全部低于 360p360p 或更高480p 或更高720p 或更高1080p 或更高
  • 源
    全部
    Dailymotion
    Vimeo
    Metacafe
    Hulu
    VEVO
    Myspace
    MTV
    CBS
    Fox
    CNN
    MSN
  • 价格
    全部免费付费
  • 清除筛选条件
  • 安全搜索:
  • 中等
    严格中等(默认)关闭
筛选器
Magnetic levitation, whether in a science demo or a high-speed train, relies on the same core idea: using magnetic fields to fight gravity. Magnets can repel or attract without contact, and with the right setup, they can suspend objects in mid-air. The real challenge is stability. Maglev trains solve this using electromagnets and sensors that constantly adjust the magnetic force, allowing the train to float smoothly just above the track. This system removes friction and enables speeds over 600 k
0:22
Magnetic levitation, whether in a science demo or a high-speed train, relies on the same core idea: using magnetic fields to fight gravity. Magnets can repel or attract without contact, and with the right setup, they can suspend objects in mid-air. The real challenge is stability. Maglev trains solve this using electromagnets and sensors that constantly adjust the magnetic force, allowing the train to float smoothly just above the track. This system removes friction and enables speeds over 600 k
已浏览 1.8万 次11 个月之前
FacebookScience.sbmedia
展开
静态缩略图占位符
更多类似内容
  • 隐私
  • 条款