An Unseen world part 3

Yet remarkable as our eyes

may be there are many things

they cannot enable us to see. Among

these are very small things we mean 

things about the size of the period at 

the end of this sentence. Now you can

see the period quite easily and if it were

only one tenth its  size you could still

see it but if the period shrank to one

 a hundredth of its present size you

would probably lose sight of it. 

Yet small as the shrunken period

might be it would still be much 

larger than millions of different kind 

of things that exit in your everyday

world.