About 31 mm (one inch). “atto-” is the standard SI prefix for multiplication by 10^-18. A parsec (parallax-second) is 3.26 light-years; an attoparsec is thus 3.26 * 10^-18 light years. Thus, one attoparsec per microfortnight is about one inch per second.
This unit is reported to be in use (though probably not very seriously) among hackers in the UK.
noun the physics of structures and artefacts with dimensions in the attometre range or of devices, such as lasers, capable of producing pulses with a duration measured in attoseconds
to acknowledge the relation of a tenant to a new landlord. to turn over to another; transfer. verb (intransitive) (law) to acknowledge a new owner of land as one’s landlord (feudal history) to transfer allegiance or do homage to a new lord v. late 13c., Anglo-French, “to turn over to another,” from Old French atorner […]
a lawyer; attorney-at-law. an attorney-in-fact; agent. Contemporary Examples AG: The president looks to the attorney general for legal advice. Bush’s Lawyers Strike Back Dan Abrams May 2, 2009 The U.S. attorney, Leura Canary, argued this was tantamount to sale of a public office and brought charges. What the Justice Department is Hiding Scott Horton November […]
an officer of the court authorized to appear before it as a representative of a party to a legal controversy. Contemporary Examples She served as a social worker, lecturer and educator before becoming an attorney-at-law. 2012 Summit: Who’s On Stage March 5, 2012 Historical Examples We cannot for the small business transactions of life be […]