风筝通常是由纸,丝绸和其他一些薄材料制成的等腰形玩具。 它以半圆形结构为基础,并配有尾盖,以在飞行过程中保持平衡。 风筝的背面是平坦的,它的尾巴除了保持平衡之外,还帮助风筝以受控且稳定的方式飞行。 有了风筝,人就能在天上飞。 它也可以用作非机械飞机。 人们认为亚历山大·威尔逊是苏格兰第一个使用风筝获取气象信息的人。 1849年,他将温度计绑在风筝上,然后飞向天空。 1852年,本杰明·富兰克林(Benjamin Franklin)用风筝来研究电和闪电。 1893年,澳大利亚人劳伦斯·哈格雷夫(Lawrence Hargrave)发明了箱形风筝,并将其成功地用于气象学和气象学研究。 亚历山大·格雷厄姆·贝尔(Alexander Graham Bell)使用四边形的风筝来测试飞机的制造问题。
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