The Standard Time and Frequency Signal (STFS) is a time signal service available in the United States which provides standard time and frequency signals, broadcast on very precise carrier frequencies by the U.S. Naval Observatory and the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS).
A similar service is operated in the United Kingdom by the National Physical Laboratory, broadcasting from Anthorn radio station in north-west England, and by the BBC using the 198kHz carrier of the Radio 4 national radio station with a frequency accuracy of 1 part in 1011.
The National Physical Laboratory, India is the premier research laboratory in India in the field of physical sciences. NPLI continues to disseminate standard time and frequency signals (STFS) via geostationary satellite INSAT with an accuracy of 10 ms.
Famous quotes containing the words standard, time, frequency, signal and/or service:
“Where shall we look for standard English but to the words of a standard man?”
—Henry David Thoreau (1817–1862)
“when this life is from the body fled,
To see it selfe in that eternall Glasse,
Where time doth end, and thoughts accuse the dead,
Where all to come, is one with all that was;
Then living men aske how he left his breath,
That while he lived never thought of death.”
—Fulke Greville (1554–1628)
“The frequency of personal questions grows in direct proportion to your increasing girth. . . . No one would ask a man such a personally invasive question as “Is your wife having natural childbirth or is she planning to be knocked out?” But someone might ask that of you. No matter how much you wish for privacy, your pregnancy is a public event to which everyone feels invited.”
—Jean Marzollo (20th century)
“The experience of a sense of guilt for wrong-doing is necessary for the development of self-control. The guilt feelings will later serve as a warning signal which the child can produce himself when an impulse to repeat the naughty act comes over him. When the child can produce his on warning signals, independent of the actual presence of the adult, he is on the way to developing a conscience.”
—Selma H. Fraiberg (20th century)
“We too are ashes as we watch and hear
The psalm, the sorrow, and the simple praise
Of one whose promised thoughts of other days
Were such as ours, but now wholly destroyed,
The service record of his youth wiped out,
His dream dispersed by shot, must disappear.”
—Karl Shapiro (b. 1913)