You're probably aware that Apple recently started using their own-designed, M1 chip, in some of their Mac computers instead of an Intel chip. The new chip is measured in nanometers, which didn't mean a lot to me till I read the following statement I was reading in an article about Apple's new chip. How does any company manufacture, handle and use something that small? Almost unbelievable!.
Jim Hamm
"Much has been made of Apple’s earthshaking switch from Intel processors to its own, designed-in-house M1 chip. Produced for Apple by the Taiwan Semiconductor Manufacturing Co. (TSMC), M1 semiconductors use a vanishingly small 5-nanometer (5nm) transistor size, less than 1/10,000 the width of a human hair. M1 processors have figured prominently in Macs since November 2020."
To give you another perspective of how small a nanometer is, take a read on the following:
"a typical virus is about 100 nanometers wide. A bacterium is about 1000 nanometers"