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I've read through the source quoted for the currently stated value of the hyperfine transition of hydrogen, and while it is mentioned,
the IEEE source actually recommends a different value which is the average of the two results obtained (aka 1 420 405 751.768(2) Hz).
I've also found another article from Nature Communications that states the other value as the 'literature value'
here.
Can I go change the current value (1 420 405 751.7667(9) Hz) to the value recommended by the IEEE publication (1 420 405 751.768(2) Hz)?
I'm new here, so sorry if this is a silly question or anything. Also, I can't find the Wikipedia policies for writing measured values (or, at least, it's not immediately obvious) - can somebody show me where it is?
Edit 1: formatting.
Edit 2: more formatting.
Edit 3: even more formatting.
This article first gives a frequency for this Hydrogen line of 1420 (and some change) MHz which is 1.420 (ditto) GHz. But then it says,
This frequency falls below the microwave region of the electromagnetic spectrum, which begins at 3.0 GHz (10 cm wavelength)...
Is that correct? Yes, it falls below 3.0 GHz, which (according to other WP articles) is the top end of the microwave range--the cut-off between microwave and infrared (by some definitions, anyway). But then those articles give the other end of the microwave range (the border with radio waves, if microwaves are not considered radio waves) as 300 MHz. This puts the Hydrogen line within the microwave range. Or am I misunderstanding something? Uporządnicki ( talk) 15:33, 20 April 2023 (UTC)
If an "In popular culture" section were added it could reference the Star Trek TNG episode "Galaxy's Child" which refers to this phenomena
![]() | This ![]() It is of interest to the following WikiProjects: | |||||||||||||||||||||||
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Archives: 1 |
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This page has archives. Sections older than 30 days may be automatically archived by Lowercase sigmabot III when more than 4 sections are present. |
Hello fellow Wikipedians,
I have just modified one external link on Hydrogen line. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 10:14, 9 November 2017 (UTC)
I've read through the source quoted for the currently stated value of the hyperfine transition of hydrogen, and while it is mentioned,
the IEEE source actually recommends a different value which is the average of the two results obtained (aka 1 420 405 751.768(2) Hz).
I've also found another article from Nature Communications that states the other value as the 'literature value'
here.
Can I go change the current value (1 420 405 751.7667(9) Hz) to the value recommended by the IEEE publication (1 420 405 751.768(2) Hz)?
I'm new here, so sorry if this is a silly question or anything. Also, I can't find the Wikipedia policies for writing measured values (or, at least, it's not immediately obvious) - can somebody show me where it is?
Edit 1: formatting.
Edit 2: more formatting.
Edit 3: even more formatting.
This article first gives a frequency for this Hydrogen line of 1420 (and some change) MHz which is 1.420 (ditto) GHz. But then it says,
This frequency falls below the microwave region of the electromagnetic spectrum, which begins at 3.0 GHz (10 cm wavelength)...
Is that correct? Yes, it falls below 3.0 GHz, which (according to other WP articles) is the top end of the microwave range--the cut-off between microwave and infrared (by some definitions, anyway). But then those articles give the other end of the microwave range (the border with radio waves, if microwaves are not considered radio waves) as 300 MHz. This puts the Hydrogen line within the microwave range. Or am I misunderstanding something? Uporządnicki ( talk) 15:33, 20 April 2023 (UTC)
If an "In popular culture" section were added it could reference the Star Trek TNG episode "Galaxy's Child" which refers to this phenomena