How Big Are Things? Home     Welcome	small		Real world	big			solar system		between	galaxy
	nano	micro		meter	kilo		Mega	Giga	Tera	Peta	Exa

nm = 10-9 m

look at the entire room

galaxy		21
		20 19
local stars		18
		17 16
between		15
		14 13
E's orbit		12
		11 10
sun		9
		8 7
texas		6
		5 4
hood		3
		2 1
you		0
		-1 -2
salt grain		-3
		-4 -5
bacteria		-6
		-7 -8
atom		-9

atom ~1 nm ribosome ~10 nm virus ~100 nm

angstroms (A)
0	100	200	300	400	500

cell membrane

... DNA helix (think coffee stirrer)
    amino acid
ribosome

globular protein

narrowest nanotube
a typical carbon single-wall nanotube
... bigger multi-wall nanotubes

picture of a nanotube

buckeyball

Rabies Virus (Bullet-shaped. This illustration is sliced open. Some info.) (original image from CDC Phil, image 970)

approximate smallest virus src

  O₂ and N₂'s mean free path in STP air. src,src(PS),src
  H₂O's mean free path in STP water. (order 0.1 nm!)

X-Rays (shortest wavelength is ~0.03 nm) [soft vs hard]
.   .   .   Ultra-Violet wavelengths (up to ~400 nm)
Extreme UltraViolet (EUV)
Deep UltraViolet (DUV) [I'm not sure that DUV doesn't overlap UVC]

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