From DNA to a single hair strand, let's take a look at the smallest things our eyes can see. 1. House Fly- 8 mm These insects are grey black with slightly hairy bodies, they're visible to the ...

But it's possible to see things much smaller than that if we use magnification. There's three types of microscope: light, like this one here, and two types of electron microscopes, like those ones ...

Much like the traditional scanning electron microscope (SEM), the field emission scanning electron microscope uses electrons to illuminate a sample, instead of visible light as is ... by this emitter ...