The way you measure nanotechnology is in nanometers, and one nanometer is a billionth of a meter, and to put some scale to that, if you had a nanoparticle that was one nanometer thick, and you put it side by side, and you had 50,000 of them, you'd be the width of a human hair.
ナノテクノロジーでは ナノメートルの世界 １ナノメートルは １メートルの10億分の１ どのくらい小さいかと言うと 1ナノメートルのナノ分子を 横一列に 5万個並べて やっと 髪の毛１本分の幅です