New Rant Thread

[Vacumatic]

I realised today that I not that smart when I hear that the moon is to have its own time zone because time runs faster on the moon due to zero gravity.

 

[Chris]

I realised today that I not that smart when I hear that the moon is to have its own time zone because time runs faster on the moon due to zero gravity.

1/6th gravity.

 

[Vacumatic]

This may be the most stupid question of the year. I get that Gravity is much lower than on Earth but I am struggling to understand that this might have an impact on time, or the rate that time moves along, which I thought would be a constant. Why is Time faster on the moon than the Earth?

Must admit, this comes from someone who really doesn't understand tides either and why they vary.

 

[Chris]

This may be the most stupid question of the year. I get that Gravity is much lower than on Earth but I am struggling to understand that this might have an impact on time, or the rate that time moves along, which I thought would be a constant. Why is Time faster on the moon than the Earth?

Must admit, this comes from someone who really doesn't understand tides either and why they vary.

Strap yourself in: According to the theory of relativity space and time are interlinked and gravity can bend space-time; the higher the gravity the more space-time bends which effectively slows down time. As there is less gravity on the moon space-time is less bent and therefore time moves slightly more quickly (56 microseconds per day). For most purposes that's way too small a difference to worry about and I believe currently space missions use UTC, however GPS works by using the lag in time signals from satellites to work out locations, but on the moon where a second isn't a second any more the measurements will go out of whack. What this boils down to is that in order to use GPS for navigation on the moon you would need clocks that are calibrated for lunar time and not Earth time.

At the moment this isn't a problem, but with plans to create a station on the moon it could be in the future.

 

[Rufusdog]

Strap yourself in: According to the theory of relativity space and time are interlinked and gravity can bend space-time; the higher the gravity the more space-time bends which effectively slows down time. As there is less gravity on the moon space-time is less bent and therefore time moves slightly more quickly (56 microseconds per day). For most purposes that's way too small a difference to worry about and I believe currently space missions use UTC, however GPS works by using the lag in time signals from satellites to work out locations, but on the moon where a second isn't a second any more the measurements will go out of whack. What this boils down to is that in order to use GPS for navigation on the moon you would need clocks that are calibrated for lunar time and not Earth time.

At the moment this isn't a problem, but with plans to create a station on the moon it could be in the future.

That’s what the TARDIS is all about…isn’t it?

 

[R181]

Strap yourself in: According to the theory of relativity space and time are interlinked and gravity can bend space-time; the higher the gravity the more space-time bends which effectively slows down time. As there is less gravity on the moon space-time is less bent and therefore time moves slightly more quickly (56 microseconds per day). For most purposes that's way too small a difference to worry about and I believe currently space missions use UTC, however GPS works by using the lag in time signals from satellites to work out locations, but on the moon where a second isn't a second any more the measurements will go out of whack. What this boils down to is that in order to use GPS for navigation on the moon you would need clocks that are calibrated for lunar time and not Earth time.

At the moment this isn't a problem, but with plans to create a station on the moon it could be in the future.

Good to know, but I doubt I'll ever live on the moon being 70 now. Gives me one less thing to stress about.

Bob

 

[Chris]

That’s what the TARDIS is all about…isn’t it?

Time And Relative Dimension In Space. An important relation as it turns out, as if you travel through time but not space the planet won't be where it was when you left. Ending up in the middle of the Indian Ocean in a DeLorean would suck, but not as badly as missing the planet entirely and ending up in space.

 

[Rufusdog]

Time And Relative Dimension In Space. An important relation as it turns out, as if you travel through time but not space the planet won't be where it was when you left. Ending up in the middle of the Indian Ocean in a DeLorean would suck, but not as badly as missing the planet entirely and ending up in space.

Sounds like something from The Hitchhiker’s Guide to the Galaxy. 42.

 

[Vacumatic]

Thank you for the answer Chris.

I am embarrassed to say that it hadn't occurred to me that Gravity could impact Time, apart from the clocks falling off the mantelpiece of course.

Thanks again, as they say, every day is a school day.

 

[Vacumatic]

I have said elsewhere that my coffee of choice is Lavazza Americano instant

I might have to review that decision.

Most of the way down the can and I see a small hair sticking out of the coffee, pulled it out and its about six inches long and blond, ain't mine.

 

[Rufusdog]

I have said elsewhere that my coffee of choice is Lavazza Americano instant

View attachment 149139


I might have to review that decision.

Most of the way down the can and I see a small hair sticking out of the coffee, pulled it out and its about six inches long and blond, ain't mine.

 

[Twelvefret]

Thank you for the answer Chris.

I am embarrassed to say that it hadn't occurred to me that Gravity could impact Time, apart from the clocks falling off the mantelpiece of course.

Thanks again, as they say, every day is a school day.

Your mantle is too narrow...

 

[MPF9]

Cost of sending goodies - 2nd Signed small parcel for gone up from £3.49 early 2023 to £5.09.

 

[Vacumatic]

Cost of sending goodies - 2nd Signed small parcel for gone up from £3.49 early 2023 to £5.09.

It is a little bit like public transport, reduce the price and more people will buy in and the bus or train is still going anyway. Reduce the cost of mailing a parcel or letters and more people will buy the service but your costs will not increase by any significant amount.

I get cheesed off with how Royal Mail and The Post Office is run, serving an island nation it could and should be the best in the world.

 

[Northam Saint]

It is a little bit like public transport, reduce the price and more people will buy in and the bus or train is still going anyway. Reduce the cost of mailing a parcel or letters and more people will buy the service but your costs will not increase by any significant amount.

I get cheesed off with how Royal Mail and The Post Office is run, serving an island nation it could and should be the best in the world.

Same ! It’s now an appalling ‘service’.