FIFO Example. You use the first in first out method where you assume the first item you buy is the first item you sell - i.e. items are in a queue You buy the first item for 100 and the second item for 200 - you then sell 1 item for 400. At balance date you would have: Sales of 400 Cost of Sales of 100 Profit of 300 Inventory of 200.
At nanometer size. Any device only a few nanometers in size is nanoscale. Nanotechnology is said to comprise elements less than 100 nanometers in size (100 nm). See nanotechnology and nanometer.
Nanoparticles range in size from about 100 nm down to about 1 nm. They are typically the size of small molecules, and far too small to see with a microscope. Working with nanoparticles is called nanotechnology.