First Atomic Clock Wristwatch
Edit Page
Report
Scan day: 08 February 2014 UTC
31
Virus safety - good
Description: A HP 5071A Cesium Beam Primary Frequency Reference can in fact be used as a wrist watch. You have a choice of stainless steel or adjustable nylon band.
Do not be misled. The many "atomic time" wristwatches you see on the market today are merely cheap quartz wristwatches with a built-in radio receiver. The watch sets itself from 60 kHz VLF radio time signals transmitted by NIST from station WWVB near the US atomic clock in Boulder, Colorado. At least once a day, reception permitting, usually at night, the watch resets itself to compensate for the normal drift of a quartz crystal. The result is a self-setting, radio-controlled, atomic-time, wrist watch that is never off by more than a second or two a day. Impressive and convenient. But these are not atomic clocks.
Size: 630 chars
Contact Information
Email:Send Message
Phone&Fax: —
Address: —
Extended: —
WEBSITE Info
| Page title: | First Atomic Clock Wristwatch |
| Keywords: | |
| Description: | |
| IP-address: | 216.92.63.125 |
WHOIS Info
| NS | Name Server: NS00.NS0.COM Name Server: NS144.PAIR.COM |
| WHOIS | Status: clientTransferProhibited |
| Date | Creation Date: 06-mar-1997 Expiration Date: 07-mar-2017 |