1 zeptometre Information & 1 zeptometre Links at HealthHaven.com

To help compare different orders of magnitude this page lists lengths between 10⁻²¹ metres and 10⁻²⁰ metres (1 zm and 10 zm).

1 × 10⁻²¹ metres = 1 zeptometre (zm) = 1,000 yoctometres
2 × 10⁻²¹ metres = radius of effective cross section for a 20 GeV neutrino scattering off a nucleon^[1]
7 × 10⁻²¹ metres = radius of effective cross section for a 250 GeV neutrino scattering off a nucleon^[1]

[edit] See also

Orders of magnitude for length in E notation, shorter than one metre:
<-24	-24	-23	-22	-21	-20	-19	-18	-17	-16	-15	-14	-13	-12	-11	-10	-9	-8	-7	-6	-5	-4	-3	-2	-1	0
longer than 1 metre:
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26

^ ^a ^b Carl R. Nave. "Neutron Absorption Cross-sections". http://hyperphysics.phy-astr.gsu.edu/hbase/particles/neutrino3.html#c2. Retrieved 2008-12-04. (area for 20 GeV about 10 x 10⁻⁴² m² gives effective radius of about 2 x 10⁻²¹ m; for 250 GeV about 150 x 10⁻⁴² m² gives effective radius of about 7 x 10⁻²¹ m)