![]() Thickness of cell wall in Gram-negative bacteria Īs of 2016, the 10 nanometre was the smallest semiconductor device fabrication node įlying height of the head of a hard disk Smallest microprocessor transistor gate oxide thickness (as of January 2007 ) Upper bound of the typical size range for "fundamental strings" Ītomic to cellular scale Factor ( m)Īpproximate limit of the gluon-mediated color force between quarks Įffective cross section radius of an 11 MeV proton Īpproximate limit of the meson-mediated nuclear binding force ĭiameter range of the atomic nucleus ĭistance between atomic nuclei in a white dwarfġ ångström (also covalent radius of sulfur atom )Īverage size of the water molecule (actual lengths may vary)ĭiameter of a carbon nanotube Diameter of smallest transistor gate (as of 2016) Sensitivity of the LIGO detector for gravitational waves Upper limit for the size of quarks and electrons ![]() Preons, hypothetical particles proposed as subcomponents of quarks and leptons the upper bound for the width of a cosmic string in string theoryĮffective cross section radius of high-energy neutrinos ĭe Broglie wavelength of protons at the Large Hadron Collider (4 TeV as of 2012 ) Quantum foam is thought to exist at this scale.Įffective cross section radius of 1 MeV neutrinos Planck length typical scale of hypothetical loop quantum gravity or size of a hypothetical string and of branes according to string theory, lengths smaller than this do not make any physical sense. To help compare different orders of magnitude, the following list describes various lengths between 1.6 × 10 − 35 metres. ![]() Huge-LQG, Hercules–Corona Borealis Great Wall, Observable universe Mount Everest, length of Panama Canal and Trans-Siberian Railway, larger asteroidĪ light-year, the distance to Proxima Centauri Piano, human, automobile, sperm whale, football field, Eiffel Tower Mosquito, golf ball, domestic cat, violin, football ![]() Wavelength of gamma rays and X-rays, hydrogen atomĭNA helix, virus, wavelength of optical spectrum, transistors used in CPUsīacterium, fog water droplet, human hair's diameter The following are examples of orders of magnitude for different lengths.įixed value (not a range). ![]()
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