Sirs: >With the correction, the estimated uncertainty is only about 4 x10^-19 s. >Does this mean a new definition of the "second" in due course? This shall only be progressive if MANUFACTURERS are wanting to develope a clock/wrist-watch/time piece perfecting the duration of the *Decimal Second, sd*: http://www.brijvij.com/bb_deci-sec-nu-mtr.pdf This definition is in keeping with the needs of "inter-linking time and arc-length i.e. the 'Decimal second, sd - the unit for TIME; and Arc-length, METRE, m' - the unit for length via Pi/180 (one degree). Thus, 24-hour clock is linked with 2x12*60*60 seconds = 2x12*100*100 decimal seconds i.e. 86400-seconds =2400000 decimal seconds. And like with, 90*x60'x60" is equated to 90*x100'x100"(decimal). Moreso, this is independent of CALENDAR/dating mechenism like in ISO 8601 - Representation of Dscending Order Dating and Time count for Instant representation. Regards, Brij Bhushan Vij Sunday, 20110508H19:04(decimal)EST Aa Nau Bhadra Kritvo Yantu Vishwatah -Rg Veda The Astronomical Poem (revised number of days in any month) "30 days has July,September, April, June, November and December all the rest have 31 except February which has 29 except on years divisible evenly by 4; except when YEAR divisible by 128 and 3200 - as long as you remember that "October (meaning 8) is the 10th month; and December (meaning 10) is the 12th BUT has 30 days & ONE OUTSIDE of calendar-format" Jan:31; Feb:29; Mar:31; Apr:30; May:31; Jun:30 Jul:30; Aug:31; Sep:30; Oct:31; Nov:30; Dec:30 (365th day of Year is World Day) ******As per Kali V-GRhymeCalendaar***** "Koi bhi cheshtha vayarth nahin hoti, purshaarth karne mein hai" My Profile - http://www.brijvij.com/bbv_2col-vipBrief.pdf Author had NO interaction with The World Calendar Association except via Media & Organisations to who I contributed for A Possible World Calendar, since 1971. HOME PAGE: http://www.brijvij.com/ Contact via E-mail: [email protected]
> From: [email protected] > Subject: [USMA:50439] Aluminum Quantum-logic Clock > To: [email protected] > Date: Sun, 8 May 2011 14:20:45 -0500 > > NIST has announced an Aluminum Quantum-logic Clock, with a correction for the > error produced by surrounding black body radiation which expands the cloud of > electrons surrounding the nucleus and alters the ticking frequency. > > With the correction, the estimated uncertainty is only about 4 x10^-19 s. > Does this mean a new definition of the "second" in due course? > The second is already the most precisely defined and realized SI Base Unit. >
