If you mean nanometer, that's abbreviated "nm" (lowercase), and the answer is a million.
One million nanometer.
1 daNm = 10 Nm
According to Wikipedia (see link), a human eye with excellent acuity can distinguish between lines that are 0.35 mm apart, held at a distance of 1 meter. That is 350 micrometres or 350,000 nm - somewhat larger than the 250 nm in the question!
there are many units which are smaller than a cm . The metric unit smaller than a cm is mm. all other units are µm,pm ,nm ,fm ,etc.
0.000001 mm is 1 nm. This is because the nanometer is much smaller than the mm. there are 1 million nm in a mm.
If you mean nanometer, that's abbreviated "nm" (lowercase), and the answer is a million.
Any of them that have wavelengths shorter than around 380 nm or longer than around 750 nm are. That includes the vast majority of the electromagnetic spectrum ... barely a single octave, out of more than 50 octaves that we can detect and measure.
One million nanometer.
0.05 nm
A macropore has a diameter of more than 50 nm , a mesopore has a diameter of 2 nm - 50 nm, a micropore has a diameter of less than 2 nm, a nanopore has a diameter of approximately 1 nm. Nm means nanometer.
What is a nanometer? 10 to the -9 meters. Also known as a very small part of a meter. Now which is longer- 20 meters, or 250 meters? 250 of course! And if you divide them both by 10 to the 9th, it'll still hold true. 5 is greater than 3, and 5/4 is still greater than 3/4.
Between 1 nanometre and 1 micrometre (= 1000 nm).
Infra-red radiation has a wavelength adjacent to but longer than visible light.
nm = nanometer = 1,000,000,000 nanometers in a meter cm = centimeter = 100 centimeters in a meter So, there are one million nanometers in a centimeter.
Any whose wavelength does not exceed 379 nm.
Ten million (10000000) nm = 1 cm.