Schu Posted May 8, 2019 Share Posted May 8, 2019 Is anyone into Horology... besides me. I am thinking about making a purchase and I find the entire realm of time keeping very interesting when history and technology comes into making the decision. Quote Link to comment Share on other sites More sharing options...
Oicu812 Posted May 8, 2019 Share Posted May 8, 2019 6 minutes ago, Schu said: Is anyone into Horology... besides me. I am thinking about making a purchase and I find the entire realm of time keepinh very interesting when history and technology comes into making the decision. I am, actually. That's why my avatar is a Panerai 3646. Quote Link to comment Share on other sites More sharing options...
babadono Posted May 8, 2019 Share Posted May 8, 2019 I'm not into time, man 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted May 8, 2019 Share Posted May 8, 2019 Does anybody really know what time it is? Does anybody really care? If so I can't imagine why (Oh no, no) We've all got time enough to cry 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted May 8, 2019 Share Posted May 8, 2019 Not sure if this is part of horology ... but pretty cool ... precise to 1 second in 300,000,000 years http://reekoscience.com/science-news/technology-science-news/nist-f2-atomic-clock-represents-official-united-states-time 2 Quote Link to comment Share on other sites More sharing options...
babadono Posted May 8, 2019 Share Posted May 8, 2019 49 minutes ago, Emile said: precise to 1 second in 300,000,000 years But how do they know that?... Sorry I'm just in a mood today. 2 1 Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 8, 2019 Share Posted May 8, 2019 19 minutes ago, babadono said: But how do they know that?... Sorry I'm just in a mood today. Simple answer is...the same way that they were able to guarantee construction flakeboard sheets for 50 years when they had just come out????😂 Quote Link to comment Share on other sites More sharing options...
Emile Posted May 8, 2019 Share Posted May 8, 2019 54 minutes ago, babadono said: But how do they know that? It's done by calculating the statistical errors in the measurements. It takes 9,192,631,770 "pulses" from the Cesium to make up ONE second. Counters are extremely good, but not perfect ... haha they can miss a pulse FYI; a second is defined as the duration of 9.192.631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of Cesium-133. The up/down yields the radiation and these pulses are measured (Edit ... from basic Physics; electrons "circle" the nucleus at defined levels. If an electron drops "down" a level it HAS to loose energy ... that's the radiation released at a specific frequency.) Haha ... about a century ago a second was 1/86,400th of a "solar day." 1 1 1 Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 8, 2019 Share Posted May 8, 2019 8 minutes ago, Emile said: It's done by calculating the statistical errors in the measurements. It takes 9,192,631,770 "pulses" from the Cesium to make up ONE second. Counters are extremely good, but not perfect ... haha they can miss a pulse and did they calculate A NEARBY DECENT-SIZED METEOR STRIKE INTO THAT EQUATION? Pulses gone haywire! Yeah, I'm "in a mood", too! BUT..I learned to never thrust old man Murphy! 3 Quote Link to comment Share on other sites More sharing options...
babadono Posted May 8, 2019 Share Posted May 8, 2019 13 minutes ago, Emile said: It takes 9,192,631,770 "pulses" from the Cesium to make up ONE second And how do they know that? Oh it's by DEFINITION The official definition of the second given by the BIPM at the 13th General Conference on Weights and Measures in 1967 is: "The second is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom." At its 1997 meeting the BIPM added to the previous definition the following specification: "This definition refers to a caesium atom at rest at a temperature of 0 K." I thought I said I wasn't into time 1 Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 8, 2019 Share Posted May 8, 2019 2 minutes ago, babadono said: And how do they know that? Oh it's by DEFINITION The official definition of the second given by the BIPM at the 13th General Conference on Weights and Measures in 1967 is: "The second is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom." At its 1997 meeting the BIPM added to the previous definition the following specification: "This definition refers to a caesium atom at rest at a temperature of 0 K." I thought I said I wasn't into time You ain't got anybody fooled, WIkipedia Man!😂 1 Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 8, 2019 Share Posted May 8, 2019 Time is an invention of human beings...dinosaurs never had watches...but they had their own way of "telling time".....time to eat....time to breed....time to defend oneself...and when the nearby volcano started spewing stuff.....time to getthehellouttaDodge!😁 2 1 Quote Link to comment Share on other sites More sharing options...
Emile Posted May 8, 2019 Share Posted May 8, 2019 2 minutes ago, HDBRbuilder said: but they had their own way of "telling time".....time to eat May I add a very important one ... time for wine 2 Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 8, 2019 Share Posted May 8, 2019 4 minutes ago, Emile said: May I add a very important one ... time for wine Yet another human invention in time! A worthwhile one, but still.... I can just hear a dinosaur now talking to a tiny mammal..."hey idiot stick...just leave a few bunches of them grapes on the vines....your descendants will thank you when the ice age comes and they can have ICE WINE!" 1 1 Quote Link to comment Share on other sites More sharing options...
JJkizak Posted May 9, 2019 Share Posted May 9, 2019 I think they wrote a song about time. JJK Quote Link to comment Share on other sites More sharing options...
richieb Posted May 9, 2019 Share Posted May 9, 2019 2 hours ago, Emile said: Not sure if this is part of horology ... but pretty cool ... precise to 1 second in 300,000,000 years http://reekoscience.com/science-news/technology-science-news/nist-f2-atomic-clock-represents-official-united-states-time === seems a bit cumbersome for wrist wear — what is it, a Timemax -😏 1 2 Quote Link to comment Share on other sites More sharing options...
richieb Posted May 9, 2019 Share Posted May 9, 2019 === time - what a waste 1 Quote Link to comment Share on other sites More sharing options...
windashine Posted May 9, 2019 Share Posted May 9, 2019 Time, hanging on to the scribbled line's Quote Link to comment Share on other sites More sharing options...
HDBRbuilder Posted May 9, 2019 Share Posted May 9, 2019 2 minutes ago, richieb said: === seems a bit cumbersome for wrist wear — what is it, a Timemax -😏 Just shoot it and see if it "takes a likkin' and keeps on tickin'!" Quote Link to comment Share on other sites More sharing options...
TasDom Posted May 9, 2019 Share Posted May 9, 2019 A thread about horology? ....it's about time 1 3 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.