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Joe Rogan & a NASA astrophysicist talk about measuring time
Posted on 5/28/26 at 7:30 pm
Posted on 5/28/26 at 7:30 pm
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New: Joe Rogan leaves NASA astrophysicist Michelle Thaller completely stuck after asking her a deep question about the reality of time:
ROGAN: “The weirdest thing that I’ve ever heard anybody say is that all time exists currently.”
THALLER: “That’s Albert Einstein.”
ROGAN: “When we measure time what exactly are we measuring? When we create a clock that runs 24 hours per day what is it measuring?”
THALLER: “That’s a deep question. That question caused everything in physics to fall apart.”
ROGAN: “I still don’t understand what we’re measuring.”
THALLER: “I don’t think I have an answer for you. I don’t think anybody does.”
29
Posted on 5/28/26 at 7:33 pm to hawgfaninc
Well I'm not the kind to live in the past
The years run too short and the days too fast
The years run too short and the days too fast
Posted on 5/28/26 at 7:37 pm to hawgfaninc
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
Posted on 5/28/26 at 7:38 pm to hawgfaninc
I expected Black Science Guy when I read the thread title.
Posted on 5/28/26 at 7:39 pm to hawgfaninc
Time is time. We just call it that bc some human named it that centuries ago.
Same thing with distance. Light. Whatever.
Same thing with distance. Light. Whatever.
This post was edited on 5/29/26 at 6:31 am
Posted on 5/28/26 at 7:44 pm to hawgfaninc
I get the idea that it's difficult because it's not tangible, but it's just another arbitrary value to give humans a perception of something. It's not a physical resource that you can put your hands on, but it's not that different from calling 'x' distance a mile, or a meter, or a foot, or a centimeter.
You just can't put your hands on it. We know it takes the same (roughly) amount of "time for the Earth to rotate it. 24/60/60 is just the values that were accepted by humanity when we started really caring about tracking it. they fit well enough together.
You just can't put your hands on it. We know it takes the same (roughly) amount of "time for the Earth to rotate it. 24/60/60 is just the values that were accepted by humanity when we started really caring about tracking it. they fit well enough together.
This post was edited on 5/28/26 at 9:58 pm
Posted on 5/28/26 at 7:45 pm to mattz1122
I know they are thinking about it at much deeper level but “we” measure time based on our parameters..our clock is based around the sun and our relation to its movement in relation to the earth and vise versa.
But man.. I spend time every so often frustrating my infantile brain about these questions and it just locks up my brain. And then I’ll have some realization and then poof.. it goes away..
But man.. I spend time every so often frustrating my infantile brain about these questions and it just locks up my brain. And then I’ll have some realization and then poof.. it goes away..
Posted on 5/28/26 at 7:46 pm to AtticusOSullivan
quote:
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
They’re talking about two different things. Joe doesn’t understand that a clock is 24 hrs based on the average length of a day which is based on the earth’s spin being one day. It’s a relative measurement. She is talking about absolutely measuring time, not doing it as a comparison to something else. Which is currently beyond our understanding of physics
Edit: we use our clocks for a consistent relative measurement of time. But time may actually pass far differently and may not be as consistent as we believe. Time may actually pass faster or slower at times (theoretically) - which is nuts but also may explain why we feel that way
This post was edited on 5/28/26 at 7:49 pm
Posted on 5/28/26 at 7:47 pm to AtticusOSullivan
quote:Rotation of the earth (day) and rotation around the sun (year) split into increments.
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
Posted on 5/28/26 at 7:48 pm to TigerFanatic99
quote:
I expected Black Science Guy when I read the thread title.
Same, isn't he a bit of a fraud though
Posted on 5/28/26 at 7:52 pm to hawgfaninc
Posted on 5/28/26 at 7:53 pm to AtticusOSullivan
quote:
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
Time moves slower the faster you move through space. The idea is our time is based on our own relative perception, but universal time is happening all at once because it is perceived differently throughout the galaxy depending on how fast or slow you're moving.
Posted on 5/28/26 at 7:53 pm to hawgfaninc
I listened to this today, and it made my mind melt, trying to figure it out
What is time? We can measure it using clocks... we have developed units of measure to determine it... years, days, hours, and seconds...
An astronaut who is in low earth orbit for a year is 1/100th of a second younger than he/she should be... and it's not only measurable, we've done it
But what are we measuring? Just the earth's rotation and revolution around the sun? Ok, I will grant that as true
But what are we really measuring when it comes to time dilation around black holes, time dilation around low earth orbit, and when it comes to time dilation here on earth???
What is time? We simply do not know.
What is time? We can measure it using clocks... we have developed units of measure to determine it... years, days, hours, and seconds...
An astronaut who is in low earth orbit for a year is 1/100th of a second younger than he/she should be... and it's not only measurable, we've done it
But what are we measuring? Just the earth's rotation and revolution around the sun? Ok, I will grant that as true
But what are we really measuring when it comes to time dilation around black holes, time dilation around low earth orbit, and when it comes to time dilation here on earth???
What is time? We simply do not know.
Posted on 5/28/26 at 7:54 pm to hawgfaninc
I’ve answered this question a million times already in the future
Posted on 5/28/26 at 7:55 pm to TheArrogantCorndog
quote:
What is time?
A bother
Posted on 5/28/26 at 7:55 pm to JimTiger72
The radiation produced by the transition between the two hyperfine ground states of caesium-133 is being measured, duh.
Posted on 5/28/26 at 7:55 pm to AtticusOSullivan
quote:
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
What if our solar system isn't the frame of reference?
Posted on 5/28/26 at 7:56 pm to AtticusOSullivan
quote:
Uhh the rotation of the earth based on the position of the sun? Is that not what we base time one? Help me out here
Except that, for a currently unexplainable reason, it’s not consistent.
If you put a clock on the launch pad of a spaceship and a clock on the ship itself, and set them together. If the spaceship were to launch and travel anywhere close to the speed of light and come back, the two clocks would show vastly different time as passing.
I don’t understand it but I know it’s true.
Posted on 5/28/26 at 7:56 pm to hawgfaninc
But if you're 10 minutes early are you really late?
Posted on 5/28/26 at 7:57 pm to Antonio Moss
Forget speed of light, we have to account for the difference in satellites. Their clocks run slower so without mathematical adjustments, we couldn't have comms or navigation from space.
Eta
And it is very consistent, which is how we are able to account for it.
Eta
And it is very consistent, which is how we are able to account for it.
This post was edited on 5/28/26 at 7:58 pm
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