Christmas sermon. Trigger-warning - suck it up, snowflake

johnny lightning · Post by **johnny lightning** » Thu Dec 27, 2018 5:49 am

OK, I'll bite. What the hell is an Atomic year?

Johnny

SlowJoe · Post by **SlowJoe** » Thu Dec 27, 2018 7:18 am

Time is currently measured by the number of pulsations a cesium atom makes. Its something like 9 billion something times a second so every time the atom pulses that 9 billion times exactly it is considered a second. With the current speed of light assuming our universe has been observed to be roughly 16 billion light years across. This type of measurement obviously relies on the atom pulsations to be accurate so it is an atomic year because the atomic ticker if you will, is the definer.

The reason this is even relevant is because for most of history the atom was obviously not the method of measuring time but rather the time that elapsed when the Earth complete a rotation around the sun. The reason i mention this is because currently in astronomy there are anomalies that indicate atomic time is not the best historical marker. The speed of the orbit of planet mercury is speeding up according to atomic time for example which goes against 1st law of thermodynamics which indicates either means someone is pushing mercury or that the atomic processes are changing.

Its like taking a mechanical watch from 150 years ago and assuming it never changes the rate at which it ticks from the day of its creation. Doesn't seem to make sense to me but dont get me wrong I dont think the earth is 6000 years old. But in orbital years I think the answer is not the touted 16 billion years either but on the order of maybe several hundred thousand years makes more sense to me given current archaeological sites being unearthed in recent years.

Kung-fu Hillbilly · Post by **Kung-fu Hillbilly** » Thu Dec 27, 2018 7:41 am

SlowJoe wrote: ↑Thu Dec 27, 2018 7:18 am The speed of the orbit of planet mercury is speeding up

Could you cite a source, please?

SlowJoe · Post by **SlowJoe** » Thu Dec 27, 2018 8:01 am

Sure give me a bit though as im in PP away from my home so i dont have my library with me.

Kung-fu Hillbilly · Post by **Kung-fu Hillbilly** » Thu Dec 27, 2018 8:22 am

If it's Mercury’s perihelion precession you're referring to, I understand General Relativity to have accounted for it.

SlowJoe · Post by **SlowJoe** » Thu Dec 27, 2018 8:27 am

I think that is what i confused for something else and you are correct that that general relativity accounted for it. I remember that there is a current anomaly i believe that is planetary that is unaccounted for with a constant speed of light but i have to find out what exactly i had in mind and read about. Im away from home at the moment so ill look into more when i get to my library.

I apologise for mixing that up i shouldnt spout off info from a phone in the middle of blaring khmer music sipping coffee on a busy street.

Arget · Post by **Arget** » Thu Dec 27, 2018 9:15 am

SlowJoe wrote: ↑Thu Dec 27, 2018 7:18 am Time is currently measured by the number of pulsations a cesium atom makes. Its something like 9 billion something times a second so every time the atom pulses that 9 billion times exactly it is considered a second. With the current speed of light assuming our universe has been observed to be roughly 16 billion light years across. This type of measurement obviously relies on the atom pulsations to be accurate so it is an atomic year because the atomic ticker if you will, is the definer.

The reason this is even relevant is because for most of history the atom was obviously not the method of measuring time but rather the time that elapsed when the Earth complete a rotation around the sun. The reason i mention this is because currently in astronomy there are anomalies that indicate atomic time is not the best historical marker. The speed of the orbit of planet mercury is speeding up according to atomic time for example which goes against 1st law of thermodynamics which indicates either means someone is pushing mercury or that the atomic processes are changing.

Its like taking a mechanical watch from 150 years ago and assuming it never changes the rate at which it ticks from the day of its creation. Doesn't seem to make sense to me but dont get me wrong I dont think the earth is 6000 years old. But in orbital years I think the answer is not the touted 16 billion years either but on the order of maybe several hundred thousand years makes more sense to me given current archaeological sites being unearthed in recent years.

Riiight................. to put that in perspective it means my old watch is a bit slow?

SlowJoe · Post by **SlowJoe** » Thu Dec 27, 2018 11:42 am

Im not sure what your point is but my original point is that even over relatively short spans of time things change and do not remain constant. It can be a watch, a car, weather system, etc so why atomic frequencies themselves should remain constant is also a question yet to be answered.

Kung-fu Hillbilly · Post by **Kung-fu Hillbilly** » Thu Dec 27, 2018 1:09 pm

SlowJoe wrote: ↑Thu Dec 27, 2018 7:18 am Time is currently measured by the number of pulsations a cesium atom makes. Its something like 9 billion something times a second so every time the atom pulses that 9 billion times exactly it is considered a second. With the current speed of light assuming our universe has been observed to be roughly 16 billion light years across. This type of measurement obviously relies on the atom pulsations to be accurate so it is an atomic year because the atomic ticker if you will, is the definer.

The universe's size (93 billion light years across) is measured by what's called Cepheid variables which are certain types of stars that emit very predictable brightness variations. These variations are measured by the photons emitted from the star that hit instruments like Hubble for example - photons are pure energy and not atomic.

Kuroneko · Post by **Kuroneko** » Thu Dec 27, 2018 2:28 pm

Kung-fu Hillbilly wrote: ↑Thu Dec 27, 2018 7:41 am
SlowJoe wrote: ↑Thu Dec 27, 2018 7:18 am The speed of the orbit of planet mercury is speeding up

Could you cite a source, please?

Mercury is the fastest planet,It travels around the sun in 88 days at a speed of about 47 K / sec. Have not seen any info about it speeding up though. The Nat Geo programs on the TV re the solar system have aired some fairly cutting edge stuff, worth checking out. https://www.nationalgeographic.com/scie ... ar-system/

All you ever wanted to know about Mercury

https://solarsystem.nasa.gov/planets/mercury/in-depth/

Christmas sermon. Trigger-warning - suck it up, snowflake

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Re: Christmas sermon. Trigger-warning - suck it up, snowflake

Re: Christmas sermon. Trigger-warning - suck it up, snowflake

Re: Christmas sermon. Trigger-warning - suck it up, snowflake

Re: Christmas sermon. Trigger-warning - suck it up, snowflake

Re: Christmas sermon. Trigger-warning - suck it up, snowflake

Re: Christmas sermon. Trigger-warning - suck it up, snowflake

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