Kids Led Clock

Posted : admin On 17.08.2021

Reactionnx Kids Alarm Clock,Wake Up Digital Clock for Kids,7 Colors Changing Night Light Bedside Clock for Boys Girls Bedroom,with Temperature Calendar,Touch Control and Snoozing. Average Rating: ( 0.0) out of 5 stars. Current Price $15.59. Price: $$$ Fantastically funky, this Stanley Kubrick-esque night-light is a stylish addition. The mission of the Texas Department of Family and Protective Services (DFPS) is to protect the unprotected - children, elderly, and people with disabilities - from abuse, neglect, and exploitation. Industrial LED Clock: This is an industrial led clock that looks large and bright. The colours of this. La Crosse Technology Color LED Alarm Clock with USB Charging Port sale $39.99. Memorex Aluminum Wireless Clock Radio Reg. La Crosse Technology 513-113W-INT Digital White Wall Clock with Temperature & Countdown Timer Reg. Jensen AM/FM Digital Dual Alarm Clock Radio with Nature Sounds.

  1. Kids Wall Clock
  2. Kids Led Clock Kit

A web sitededicated to precise Time & Frequency man's quest forthe most accurate clock..


LedKids led clock battery

Twenty five years ago I wanted to build a LED digital analog clockthat would be accurate to better than one second per year -- so I would have thefun of adjusting it when a leap secondoccurred.

This simple goal resulted in a most interesting journey intoelectronics, horology, astronomy, test equipment, quartzoscillators, rubidium and cesium atomic clocks, hydrogen masers,frequency counters and phase comparators, GPS, Loran C, GOES,and WWV / WWVB radio receivers.That makes me one of the Time-Nuts.

By now I've exceeded that goal by a factor of a million:the best clocks in my collection (active hydrogen masers)are accurate to better than one microsecond per year.Excluding national government laboratories,my home time lab now has the most accurate clock in the world. Mac os 9.2.3.

Perhaps you've heard:A man with one clock knows what time it is.A man with two clocks is never sure.But I would add further:A man with three clocks is more sure than a man with two clocks.And so the clock collection started..


ION/ITM/PTTI 2020 Keynote: Atomic Timekeeping as a Hobby - Portable clocks, NTS-2, GPS, Atomichron, Project GREAT 3 times New!
Anchorage Rocks Seattle Clocks - distant earthquake vs. precision pendulum clock New!
Project GREAT 2016a: Hawking, Einstein and Time dilation on Mt Lemmon - for GENIUS by Stephen Hawking PBS TV show New!
How to Watch a Leap Second - on December 31, 2005
Extreme Amateur Timekeeping: From Harrison to Einstein - NAWCC Time for Everyone Symposium
Project GREAT - General Relativity Einstein / Essen Anniversary Test
3 kids, 3 cesium clocks, a family road trip to measure relativistic time dilation
A close look at Clock B - in search of the best open-air pendulum clock Updated!
Precision Pendulum Clocks, Gravity and Tides - in search of the best pendulum clock
La Crosse 1235UA UltrAtomic Radio Controlled WWVB wall Clock - ultra-atomic, enhanced WWVB Updated!
Nixie Tube iPod Clock - a small virtual Nixie clock Cool!
Most Accurate Wristwatch - the first atomic wristwatch
Clock Powers of Ten - from the worst to the best clock in decades New!
Climbing With Atomic Clocks - there's a better way
Atomic Nixie tube clock - the most accurate Nixie clock
Lunar Eclipse photos - October 27th, 2004
Transit of Venus photos - June 8th, 2004
Museum of HP Clocks - precise time from HP 100A to 5071A New!
BNC Chess - what to do with extra RF connectors
The license plates - fun over the years
TAI, UTC, GPS clocks - with links to time scales and leap seconds
MJD & GPS Calendar - Modified Julian Dates and GPS Week Numbers
WildBlue - plots of satellite internet performance
9.192,631,770 GHz - see cesium atomic resonance
New Years 2001 - cesium rollover
GeoWriting - writing large words with GPS track logs
No Earthquake damage today - 28-Feb-2001
New Years 2000 at NIST - where were you for Y2K?
GOES Time and Frequency Receivers - time from space
A 'house' standard - space for time
Why - time and space
Reduction in GPS timing error when SA was turned off
Hydrogen Maser auto-tuning value - live webcam
Sulzer 2.5c quartz oscillator - stability better than 3 x 10-13
Z3801A Quartz Oscillator Comparison - all good but not equal
Z3801A EFC Resolution Calculation - 5 x 10-13 per DAC unit
2002 20/02 20:02 - the triple palindrome minute
Allan Deviation of some of my frequency standards
Ultralink WWVB receiver 'D' command - one bit per second
Ultralink WWVB receiver 'T' command - 5 Hz samples
A measurement of 60 Hz mains power - how stable a timekeeper? - replace 3600 leap seconds with one leap hour New!
The State of the Art in Amateur Timekeeping - PTTI 2003 paper
The Time-Nuts mailing list - getting started with amateur time & frequency Updated!
Amateur Time Hackers Play With Atomic Clocks at Home - recent WIRED news article
Time Hackers Tinker With Their Atomic Toys - gallery of WIRED photos
Unobtanium Clock: So Accurate it converts Time to Money - April Fool's 2010
Louis Essen and Leap second history - a first hand report
Classic hp Hewlett-Packard Application Notes for GPS, Time and Frequency - PDF archive

Map of

  • - Scanned papers of historical interest
  • - Museum of HP Clocks
  • - Logbook and raw data (ask)
  • - Museum of Time & Frequency
  • - Random lab notes
  • - Old HP Journal articles
  • - Various lab reports; some in progress

Kids Wall Clock

Do you have comments/questions?

Kids Led Clock Kit

Page created with vi -- last updated Fri Mar 08 15:20:57 2019