Once I started wearing watches again, I suddenly realized that I once again have access to "times" that many never have. Like "quarter to eleven." If you read your phone to check the time, you don't have quarter to eleven. You have 10:45. WIN! It's like another dimension. A grown-up dimension. LOL.
@@c.s2001 Thanks but the irony of the thing just flew completely over your head, and I have a sneaking suspicion that you may be one of those poor sorry souls for whom "quarter to eleven" is not an option and never has been.
As a fellow engineer, I also do not really understand physics... but seriously, great video. I remember watching these "watch and learns" many years ago. I'm glad you still make them from time to time. They truly are a service to the youtube watch space.
Marc,a Superman TV episode from the 50's had him going to the Atomic observatory people in Colorado to speed up the time to flush out criminals who were running out the Statute of Limitations- waiting for their clock connected to the observatory to pass midnight. They were shocked!!!
While listening to my shortwave radio when I was a teenager, I discovered WWV in Colorado and CHU in Canada. I was fascinated by the time signals that were broadcast over the airwaves and would set my Mickey Mouse watch to those signals. I still rely on the atomic clocks to this day. Yes, they are not perfect but it’s good enough for me. Thanks for the post!
“Does anybody really know what time it is? Does anybody really care? About time? If so, I can’t imagine why. We’ve all got time enough to cry.” - couldn’t resist. That was one of my dad’s favorite songs. Thanks for bringing back fond memories for me. Amazing how much of the watch collecting journey is connected to memory and emotion and connections between people.
In computer networks time is a big deal from a security standpoint. There will potentially be a lot of clocks synchronized on a network. Latency, distance, congestion, and packet collision percentage all play a role in these updates. A pristine atomic clock is stratum 0, and only supplies time requests to a limited number of stratum 1 clocks. Stratum 1 supplies stratum 2, 2 supplies 3, and so on. It's amazing how critical something as seemingly simple as time is regulated and maintained behind the scenes of things we use everyday and take for granted.
As a tetrapod I find this video exceptional. Please follow up with more that are similar. Also, you never have to apologize for expressing knowledge. The more egg headed the better. I will be looking for your follow up. By the way I purchased a bezel and bracelet from you for my Orient Triton. Those two items dressed that watch up beyond belief. Thanks for that. I really enjoyed this video.
love the watch and learn series. This is a topic that has always fascinated me - so thanks for the great presentation! Looking forward to the next installment.
What a crazy coincidence! I have also been going down this rabbit hole the past couple of weeks. Mine was spurred on by the clock I had on my wall at my ham radio desk drifting way too much over a month. I'll have to go back in your video history to find where the GeoChron came in! My rabbit hole research ended up with my getting a Casio JDM Wave Ceptor!
It makes me happy to know that there's someone else that cares about this. Answer to your question, time passes slower when you're closer to a massive object, so time is passing slower at lower altitude.
Great video to watch on a lazy Sunday morning... where the precise time is relatively unimportant (see what i did there? :) Look forward to the next Watch & Learn. Thanks Marc!
@@islandwatch: You could mention in your next video that if relativity weren't taken into account, GPS locations would drift by 10km each day: www.astronomy.ohio-state.edu/pogge.1/Ast162/Unit5/gps.html .
Great, interesting video, Marc. I, too, am a time nerd. Horology nerd is the correct term, I guess. I had no idea how this all worked. I knew about the atomic clock in Boulder, I used it to set my watches back in the 80s when I traveled a lot and needed to know the precise time (the airlines tried refused to board me claiming I didn't get to the gate on time, but when I told her we could go to a pay phone and call the atomic clock number to get the exact time, she relented). Fascinating, all those atomic clocks and that UCT is an average!
Very interesting, Mark! Yeah, let's have more on the subject. I just bought a Breitling B50 and had to set UTC first, before setting T1 and T2, which are both based on UTC + or - the hours needed to find your timezones.
Love this stuff! I was actually having a discussion with a friend about the difference between GMT and UTC just the other day. Incidentally, the greater the gravitational pull the greater the amount of time dilation, so time passes more slowly for those who are closer to the mass of the earth.
'Somone will know'; I am that nerd. The closer you get to c or the closer you get to a gravity source, the slower your time is. These vids seem really popular - other rabbit holes I've lost time to (ahahaha), and you could consider, include entropy (the only arrow of time in the whole of science) and the Planck time, which implies we jerk through time at intervals of 10e-43s. At less than that the energy uncertainty is so high that it seems a black hole is created. So that makes perfect sense then.
Interesting video looking forward to the next upload. I have a atomic clock by Sharp model# SPC364 used to set time on my mechanicals. It was less than $5 USD in 2004. I got it for a $1.50 back then, still in use today and like new condition. I've always found it fascinating and glad to have one.
Esoteric, Mark, but never dull. Time is an artificial concept; what matters in the universe are processes, which take from a nano-second to billions of years to take place. Interesting stuff.
Excellent video! Didn’t know about the international cooperation across atomic clocks and how altitude and the theory of relativity creates discrepancies between their time. Look forward to the next one!
Look up 'the equation of time' and get your head around that. They get it blown when you find out it's a watch complication. Thanks Marc, looking forward to your next parts.
Awesome video, Mark! More please! I think there are more time geeks out there than you realize. 😊 I’m glad you can geek out and talk about this stuff whilst still admitting that you don’t fully understand it all. As someone with a degree in computer science from a top university, I studied some pretty advanced mathematics in my day, but I admit I only have a basic conceptual understanding of relativity. 😮 It’s still fun to geek out on this stuff though! ❤
I’m all in. Time is like an onion and twice as irritating when you examine the details of it. What’s simple to most of us turns out to be rather complex. Intriguing video-
I read something a year or so, ago. Something about the NIST clock in Fort Collins not having the necessary revenue for operation. The point of the article was that no one was all that interested in keeping it going. Political football and all. I sort of blew it off as thinking they would eventually find funding. By the time I thought of it again, I couldn't find out what happened. But, even though everyone takes that radio signal as a given; that is not necessarily so. Taking care of Cesium is probably not cheap.
Fun fact is that we are very good at measuring the progress of change and we call it time, but it isn't. Truth is we have exactly zero idea what time even is and especially why it does not go backwards. We talk all fancy and discuss entropy and how it mostly always increases, but that's really just a sciency way of guessing and we still have no clue. The other amazing thing about time is that it's always beer o'clock somewhere in the world 😀
Thanks for the explainer, Sir. I'm fascinated by Relativity, didn't knew that atomic time gave another proof. And your exposition has been clear and simple, that's not easy!
This is great stuff...and one reason I love watches is it's historical importance. It always baffles me how important time is, and our arbitrary constructs as humans around it
I have two cell phones. One runs a second faster than the other. So much for atomic clocks. On a related note, the Seiko Speedtimer I'm wearing on my wrist has gotten a ton of compliments and is perfectly synched to one of my phones ( never got a compliment on my phone).... it's either a second fast or a second slow. Go figure.😏🤷🏻
As a Quartz watch enthusiast, another point I find interesting is that even with an atomic clock, a Quartz crystal is the oscillator. The Cesium atoms are exposed to a radio frequency created by the Quartz crystal. How the Cesium atoms react allows us to judge the accuracy of the frequency generated by the Quartz crystal and make adjustments to that frequency by trimming. In other words, the Cesium atoms are like an error correction mechanism for a Quartz oscillator.
Mark I knew you were smart brother you have to take us to another level another dimension. Thank you so much sir for making me think that my watch don’t have the right time now. It’s a great information. Thank you so much. I think it’s awesome. All the little details about the atomic clock did I didn’t know. Just thought that everyone was the same. Thank you so much, sir. 🌟
This made me think of the saying "A man who has one watch knows what time it is. A man who has two watches is not quite sure" :-D Question: What time does GPS show, like my Garmin GPS I use for car-navigation? Is it my time in relation to UTC or to GPS? GPS does not use leap seconds and is off by 17 seconds currently, I think. Please continue, Marc @islandwatch , this topic is interesting!
Marc, Excellent video! Can't wait for your next Watch and Learn. Can you recommend some books to read on telling time and the development of clocks and watches? Thanks so much.
Way to go Mark! This is fascinating. When you star T traveling with ETs, they take you out and put you back in the TIME track you were in with amazing accuracy. This is ONE RE A SUN you have weight in the horology world and why EYE keep your emails coming in. You're Sirius about TIME.
As an engineer, I find this topic and your presentation excellent. Please do more.
Will do, thank you.
Once I started wearing watches again, I suddenly realized that I once again have access to "times" that many never have. Like "quarter to eleven." If you read your phone to check the time, you don't have quarter to eleven. You have 10:45. WIN! It's like another dimension. A grown-up dimension. LOL.
You can adjust your smart phone from a digital format to an analog clock format.
The decision is yours!
@@c.s2001 Thanks but the irony of the thing just flew completely over your head, and I have a sneaking suspicion that you may be one of those poor sorry souls for whom "quarter to eleven" is not an option and never has been.
Also with the analog watch you always round up. 9:54 is 5 to 10.
My partner's grand kid at age 11 can read a digital clock, say, 9:57. How long until 10? "I don't know"
“Does anybody really know what time it is.” Great song by Chicago.
All I know is my G Shock Atomic watches all have the same time. 😂
And time keeps on slipping into the future.
When I went to title the video, I thought about the Chicago song.
@@islandwatch 👍🏻
As a fellow engineer, I also do not really understand physics... but seriously, great video. I remember watching these "watch and learns" many years ago. I'm glad you still make them from time to time. They truly are a service to the youtube watch space.
thanks! Glad you enjoy
Marc,a Superman TV episode from the 50's had him going to the Atomic observatory people in Colorado to speed up the time to flush out criminals who were running out the Statute of Limitations- waiting for their clock connected to the observatory to pass midnight. They were shocked!!!
While listening to my shortwave radio when I was a teenager, I discovered WWV in Colorado and CHU in Canada.
I was fascinated by the time signals that were broadcast over the airwaves and would set my Mickey Mouse watch to those signals.
I still rely on the atomic clocks to this day. Yes, they are not perfect but it’s good enough for me.
Thanks for the post!
Thanks so much for watching!
I get a signal from WWV as well! My cheapo wall clock syncs itself to their time signal at 02:00 each day. Works like a charm!
Marc - love this, thank you. I look forward to more of this kind!
thanks so much, I'm glad.
I was reminded of a song by the band Chicago - “Does Anyone Really Know What Time it Is?”
ruclips.net/video/jgF_ycCmF18/видео.html
Yup, almost titled it that.
“Does anybody really know what time it is? Does anybody really care? About time? If so, I can’t imagine why. We’ve all got time enough to cry.” - couldn’t resist. That was one of my dad’s favorite songs. Thanks for bringing back fond memories for me. Amazing how much of the watch collecting journey is connected to memory and emotion and connections between people.
Very true! Almost named the video "Does anybody really know what time it is?"
Love that song!
I simply love this topic 😀
Please, please keep those kind of video coming👍🏻
got it
Agreed!!
Currently wearing my Skyhawk which sets itself via radio every morning at 2am. Loved this video, thank you Marc 👍🏻
As the video reminds you, Marc’s love of time (& watches) is genuine. As a non-STEM person, thx! I learned something! 🤯
In computer networks time is a big deal from a security standpoint. There will potentially be a lot of clocks synchronized on a network. Latency, distance, congestion, and packet collision percentage all play a role in these updates. A pristine atomic clock is stratum 0, and only supplies time requests to a limited number of stratum 1 clocks. Stratum 1 supplies stratum 2, 2 supplies 3, and so on. It's amazing how critical something as seemingly simple as time is regulated and maintained behind the scenes of things we use everyday and take for granted.
thanks so much. Being on the same time is so important.
Looking like you filmed this damned near the equinox. Love your daylight map.
Fascinating! Thank you!
Glad you enjoyed it!
Mark, so happy to have you back doing Watch and Learn, thanks!
When I can. . . thanks!
As a tetrapod I find this video exceptional. Please follow up with more that are similar. Also, you never have to apologize for expressing knowledge. The more egg headed the better. I will be looking for your follow up. By the way I purchased a bezel and bracelet from you for my Orient Triton. Those two items dressed that watch up beyond belief. Thanks for that. I really enjoyed this video.
love the watch and learn series. This is a topic that has always fascinated me - so thanks for the great presentation! Looking forward to the next installment.
What a crazy coincidence! I have also been going down this rabbit hole the past couple of weeks. Mine was spurred on by the clock I had on my wall at my ham radio desk drifting way too much over a month. I'll have to go back in your video history to find where the GeoChron came in! My rabbit hole research ended up with my getting a Casio JDM Wave Ceptor!
Thanks Marc. I like when you put these informative videos.
I'm glad you like them, because I doubt the content sometimes.
Love learning more about time. This was a great video, Marc!
I’m amazed how many engineers have a fascination with time and the mechanical marvel that track it for us. Thanks Marc
It makes me happy to know that there's someone else that cares about this.
Answer to your question, time passes slower when you're closer to a massive object, so time is passing slower at lower altitude.
Key plot element in a certain blockbuster Hollywood movie . . . it's amazing how many ordinary people know this now!
Got it. I should have remembered this from Interstellar.
The Special Theory I'm good at. General, not so much.
I remember the rule because of 1997's Blast from the Past. Hahaha. Brendan Frasier, Alicia Silverstone, and of course Christopher Walken.
That is so cool. You're right, it's fascinating. I think you're a great teacher as well. Your enthusiasm is contagious.
Awesome show. I love going full nerd on this stuff.
Great video to watch on a lazy Sunday morning... where the precise time is relatively unimportant (see what i did there? :) Look forward to the next Watch & Learn. Thanks Marc!
Love hearing you geek out on topics like this Marc! Relativity is such a trip and a concept that is just incredible to try and get a grasp on!
thanks! I'm a fan of relativity.
@@islandwatch: You could mention in your next video that if relativity weren't taken into account, GPS locations would drift by 10km each day: www.astronomy.ohio-state.edu/pogge.1/Ast162/Unit5/gps.html .
Great video, I had to watch it twice to wrap my head around some of the science, but truly enjoyable both times. Thank you Mark !!
The sun, moon and stars are all we really need.
I love these Watch & Learn videos of yours, you always present the topic in a easy to understand and fascinating way. Looking forward for more!
Great, interesting video, Marc. I, too, am a time nerd. Horology nerd is the correct term, I guess. I had no idea how this all worked. I knew about the atomic clock in Boulder, I used it to set my watches back in the 80s when I traveled a lot and needed to know the precise time (the airlines tried refused to board me claiming I didn't get to the gate on time, but when I told her we could go to a pay phone and call the atomic clock number to get the exact time, she relented). Fascinating, all those atomic clocks and that UCT is an average!
So cool, isn't it?!??!?!
Its always something o-clock lol It's 5oclock somewhere.
Thanks Jimmy! LOL
Its always 4:20 somewhere.
🤔🤔🤔
Thank you Prof Mark for this awesome lesson on Chronometry. Look forward to the next video.
Marc, this was indeed fascinating!
Mark, your are extremely interesting presenter as always!
Amazing, thanks Marc!!
This is incredibly interesting and I look forward to the next video!
Very interesting, Mark! Yeah, let's have more on the subject. I just bought a Breitling B50 and had to set UTC first, before setting T1 and T2, which are both based on UTC + or - the hours needed to find your timezones.
You will have more!
I love this video and topic! I’m ready for your next video on the subject. Thanks for doing a deep dive on this! 🥃
Love this stuff! I was actually having a discussion with a friend about the difference between GMT and UTC just the other day. Incidentally, the greater the gravitational pull the greater the amount of time dilation, so time passes more slowly for those who are closer to the mass of the earth.
'Somone will know'; I am that nerd. The closer you get to c or the closer you get to a gravity source, the slower your time is. These vids seem really popular - other rabbit holes I've lost time to (ahahaha), and you could consider, include entropy (the only arrow of time in the whole of science) and the Planck time, which implies we jerk through time at intervals of 10e-43s. At less than that the energy uncertainty is so high that it seems a black hole is created. So that makes perfect sense then.
Thanks. I've been watching some @floatheadphysics lately.
Excellent video! Love the explanation!
Ultimately, we all reach the point where the time is up. No more time. Makes you wonder, is there really time?
Very deep.
@@islandwatch Yeah. I take it back. Nice presentation. Thank you.
Fascinating stuff.
Interesting video! Really like these “watch and learn”!!
Thank you, Mark. You are just fantastic
Ha! Glad you think so
Great video, keep doing these! If you break your watch and it doesn't work anymore, it will be perfectly accurate twice a day.
Super interresting - would love to see more like this👍
You got it.
great video! Looking forward to the future parts.
Interesting video looking forward to the next upload. I have a atomic clock by Sharp model# SPC364 used to set time on my mechanicals. It was less than $5 USD in 2004. I got it for a $1.50 back then, still in use today and like new condition. I've always found it fascinating and glad to have one.
Wow, that's amazing
Love this! This is interesting thank for nerding out on time
All this from trying to navigate across the Atlantic ocean. Awesome presentation.
Good book!
Great content. I’ve actually learned something other than someone’s opinion. Thanks.
Esoteric, Mark, but never dull. Time is an artificial concept; what matters in the universe are processes, which take from a nano-second to billions of years to take place. Interesting stuff.
great and interesting topic. We need part 2
Thank you so much! Such an interesting video!
Great topic, lot to learn!
Glad you think so!
This was outstanding.
Excellent video! Didn’t know about the international cooperation across atomic clocks and how altitude and the theory of relativity creates discrepancies between their time. Look forward to the next one!
Loved it! Really find this so interesting 👌🏻. Sure would like to hear more!
then there will be!
Look up 'the equation of time' and get your head around that. They get it blown when you find out it's a watch complication. Thanks Marc, looking forward to your next parts.
I've actually wanted to do a video on that complication. My Geochron keeps track of the EOT
That was very nicely explained!
Looking forward to the next part - very interesting info. Thanks!
Great, thank you!
Awesome video, Mark! More please! I think there are more time geeks out there than you realize. 😊 I’m glad you can geek out and talk about this stuff whilst still admitting that you don’t fully understand it all. As someone with a degree in computer science from a top university, I studied some pretty advanced mathematics in my day, but I admit I only have a basic conceptual understanding of relativity. 😮 It’s still fun to geek out on this stuff though! ❤
thanks so much.
Great presentation. 👊🏻
Long Island Watch, covering A L L the bases! Nice job, Mark.
Trying, thank you.
I’m all in. Time is like an onion and twice as irritating when you examine the details of it. What’s simple to most of us turns out to be rather complex. Intriguing video-
This is fascinating, Marc! Thanks for putting this together.
Glad you enjoyed, thanks for watching.
Wow, great stuff Marc. Thanks!
I read something a year or so, ago. Something about the NIST clock in Fort Collins not having the necessary revenue for operation. The point of the article was that no one was all that interested in keeping it going. Political football and all. I sort of blew it off as thinking they would eventually find funding. By the time I thought of it again, I couldn't find out what happened. But, even though everyone takes that radio signal as a given; that is not necessarily so. Taking care of Cesium is probably not cheap.
Great information I never considered. Thanks for sharing!
Fun fact is that we are very good at measuring the progress of change and we call it time, but it isn't. Truth is we have exactly zero idea what time even is and especially why it does not go backwards. We talk all fancy and discuss entropy and how it mostly always increases, but that's really just a sciency way of guessing and we still have no clue.
The other amazing thing about time is that it's always beer o'clock somewhere in the world 😀
Thanks so much!
Thanks for the explainer, Sir. I'm fascinated by Relativity, didn't knew that atomic time gave another proof. And your exposition has been clear and simple, that's not easy!
Love it! Very fascinating to me Marc!
This is great stuff...and one reason I love watches is it's historical importance. It always baffles me how important time is, and our arbitrary constructs as humans around it
Yeah, nuts, isn't it?
Excellent video Mark. Some great points in the comments. I think Tvg would be destroyed by watching this vid. Lol
Look forward to the next episode....
I have two cell phones. One runs a second faster than the other. So much for atomic clocks. On a related note, the Seiko Speedtimer I'm wearing on my wrist has gotten a ton of compliments and is perfectly synched to one of my phones ( never got a compliment on my phone).... it's either a second fast or a second slow. Go figure.😏🤷🏻
Nice, which color you picked for your Speedtimer? :)
@@H0kram White Dial.😉👍🏼
Yes exactly... 1 slow ...1 fast.....
Network time isn't UTC, or I should say, it doesn't have to be. It's just a time the network agrees upon.
As a Quartz watch enthusiast, another point I find interesting is that even with an atomic clock, a Quartz crystal is the oscillator. The Cesium atoms are exposed to a radio frequency created by the Quartz crystal. How the Cesium atoms react allows us to judge the accuracy of the frequency generated by the Quartz crystal and make adjustments to that frequency by trimming. In other words, the Cesium atoms are like an error correction mechanism for a Quartz oscillator.
We have a saying. There’s always a Seiko bezel out of alignment somewhere
🤣
LOLOLOL
Very cool. More please.
Fascinating, thank you for your time!
Ha! I see what you did there.
Mark I knew you were smart brother you have to take us to another level another dimension. Thank you so much sir for making me think that my watch don’t have the right time now.
It’s a great information. Thank you so much. I think it’s awesome. All the little details about the atomic clock did I didn’t know. Just thought that everyone was the same. Thank you so much, sir. 🌟
Wonderful video! I enjoyed it a lot. Looking forward to the next parts.
Great, thank you
Thanks for compiling this information Mark.
My pleasure!
The NIST atomic time for the east coast is in Gaithersburg MD. So you're Citizen doesn't get it's signal from Colorado
Thanks for that! I realized afterwards there are two labs, Colorado and MD.
This made me think of the saying "A man who has one watch knows what time it is. A man who has two watches is not quite sure" :-D
Question: What time does GPS show, like my Garmin GPS I use for car-navigation? Is it my time in relation to UTC or to GPS? GPS does not use leap seconds and is off by 17 seconds currently, I think.
Please continue, Marc @islandwatch , this topic is interesting!
Great video I’m glad to subscribe to your channel to get some insight into the fascinating topic of time. Keep up the good content!
I love this type of content. Extremely fascinating. Well done!!!
Thanks so much.
Very interesting video! It definitely caught my attention and very informative. Great content btw! 🤘🏻
This is the most geeky discussion ever! Love it! 👍
Yeah, I can get geeky.
Cool video, I'm going to bore guys at work on Monday with this. Can't wait for part 2.
Ha! I can't say it to anyone, so I have to say it to you
Very interesting video. I didn’t have a clue about International Time. Thank you
LOVED this 😀
awesome....loved it.
Marc, Excellent video! Can't wait for your next Watch and Learn. Can you recommend some books to read on telling time and the development of clocks and watches? Thanks so much.
Check out Longitude by Dava Sobel.
@@islandwatch Thanks Marc!
Excellent video! Thank you.
Thanks for watching.
Relativity is cool!
it sure is!
Good stuff Mark!!
Glad you liked it!
Way to go Mark! This is fascinating. When you star T traveling with ETs, they take you out and put you back in the TIME track you were in with amazing accuracy. This is ONE RE A SUN you have weight in the horology world and why EYE keep your emails coming in. You're Sirius about TIME.
haha, thanks!
So cool!!! Why can’t we just get along . If we can along on time what else can we can we accomplish????
Facts!