LENGTHS

m

TIMES

s

MASSES

kg

Radius of proton

~ 1x10^-15

Planck time

~ 1x10^-43

Electron

~ 9x10^-31

Radius of hydrogen atom

~ 5x10^-11

Time for light to cross nucleus

~ 1x10^-23

Proton

~ 2x10^-27

Virus

~ 1x10^-8

Lifetime of most unstable particle

~ 1x10^-23

Uranium atom

~ 4x10^-25

Wavelength green light

~ 5x10^-8

Period of nuclear vibration

~ 1x10^-20

Penicillin molecule

~ 5x10^-17

Diameter human hair

~ 1x10^-6

Shortest lab light pulse

~ 6x10^-15

Fly

~ 1x10^-3

Red blood cell

~ 1x10^-5

Period - green light

~ 2x10^-15

Human

~ 1x10²

Bacterium

~ 1x10-

Lifetime of muon

~ 2x10^-6

Titanic

~ 1x10⁸

Computer chip

~ 1x10^-3

Period of FM radio

~ 10^-8

Pyramid

~ 1x10¹⁰

Person

~ 2

Period of AM radio

~ 1x10^-6

Small mountain

~ 1x10¹²

Mt Everest

~ 10⁴

Human heartbeat

~ 1

Asteroid Eros

~ 5x10¹⁵

Radius of earth

~ 6x10⁶

Physics Lab

~ 1x10⁴

Moon

~ 7x10²²

Diameter of Sun

~ 1x10⁹

day

~ 9x10⁴

Earth

~ 1x10²⁴

Earth - Sun

~ 2x10¹¹

year

~ 3x10⁷

Sun

~ 2x10³⁰

Earth - Pluto

~ 6x10¹²

Human life expectancy

~ 2x10⁹

Galaxy

~ 2x10⁴¹

Earth - nearest star (Proxima Centauri)

~ 4x10¹⁶

Lifetime of Roman empire

~ 2x10¹⁰

Universe

~ 1x10⁵³

Diameter typcial galaxy

~ 2x10²²

Age of Earth

~ 1x10¹⁷

Earth - Andomeda galaxy

~ 2x10²²

Age of universe

~ 5x10¹⁷

Earth - furthest quasar

~ 2x10²⁶

Lifetime of proton

~ 1x10³⁹