picometers
Atomic bond lengths
Picometers are units of length equal to one trillionth of a meter.
The scale is useful for measuring atomic and subatomic distances—the radius of a hydrogen atom is about 53 picometers.
Also spelled picometres in British English.
Ten-billionths of meters
- femtometersTrillionths of millimeters
- micrometersPrecision small-distance instruments
- millimetersMetric units, thousandths of meters
- electron microscopyImaging via focused particle beams
spectroscopy · interferometry · diffraction · calibration · resolution · precision · metrology · instrumentation
Ten-billionths of meters
- electron cloudProbable electron location zone
- orbitalRevolving around another
- hydrogenSimplest atomic element
- heliumLightest noble gas
carbon · protons · electrons · neutrons · nucleus · electron shell
Quantity approaching zero
- subatomicSmaller than atoms
- microscopicToo small for eyes
- minusculeExtremely small in size
- invisibleCannot be seen
Atomic-scale manipulation science
- nanoparticlesUltrafine material fragments
- nanomaterialsUltrasmall engineered matter
- quantum dotsNanoscale semiconductors with size-dependent properties
- nanotubesHollow molecular cylinders
graphene · nanofabrication · nanomedicine · nanoelectronics · thin films
angstroms
Ten-billionths of meters
- femtometersTrillionths of millimeters
- micrometersPrecision small-distance instruments
- millimetersMetric units, thousandths of meters
electron microscopy · spectroscopy · interferometry · diffraction · calibration · resolution · precision · metrology · instrumentation · wavelength
angstroms
Ten-billionths of meters
- electron cloudProbable electron location zone
- orbitalRevolving around another
- hydrogenSimplest atomic element
helium · carbon · protons · electrons · neutrons · nucleus · electron shell
infinitesimal
Quantity approaching zero
- subatomicSmaller than atoms
- microscopicToo small for eyes
- minusculeExtremely small in size
nanotechnology
Atomic-scale manipulation science
- nanoparticlesUltrafine material fragments
- nanomaterialsUltrasmall engineered matter
- quantum dotsNanoscale semiconductors with size-dependent properties
nanotubes · graphene · nanofabrication · nanomedicine · nanoelectronics · thin films
picometerslight-years
Units of astronomical distance
parsecs · astronomical units · kilometers · megameters · miles