搜索 - 科创

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刁为民同学终于揭开了小方盒子里的秘密，原来里面装有蓝色的水和航空煤油，在水和油的交界面发生全反射现象，形成银光闪闪的反射面，小帆船的比重比水小比油大，回此刚好悬浮在水、油界面上。

往往人们认为，技术与科学的区别仅在于一个零碎一个系统而已，其实并非如此，技术并不一定零碎，有些技术不仅构成体系，而且非常庞大，特别的现代技术，如造船技术，航空、航天技术，原子能技术。

美国国家航空航天局SKYLAB空间站宇航员Owen Garrett（W5LFL）第一次尝试提出携带业余无线电台的请求，但申请时间太短，NASA来不及在火箭发射前携带额外设备。

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