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.
La nanotecnología se mide en nanómetros, y un nanómetro es la milmillonésima parte de un metro. Para que se hagan una idea: si tuvieran una nanopartícula de un nanómetro de espesor y pusieran 50 000 iguales, una al lado de la otra, obtendrían el ancho de un cabello humano.