User talk:MHD

Welcome!

Hello, MHD, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few good links for newcomers:

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out Wikipedia:Where to ask a question, ask me on my talk page, or place {{helpme}} on your talk page and someone will show up shortly to answer your questions. Again, welcome! Kukini 14:43, 2 February 2006 (UTC)[reply]

Degrees, etc.[edit]

I believe my wording was unclear, rather than my facts incorrect. There were two things I wished to communicate in the astronomy sections on the pages on arcminute and arcsecond. Perhaps you can help me with better wording, though I'll copy some of this into the pages.

Astronomers typically measure Right Ascension in hours, minutes, and seconds. RA minutes and seconds are not to be confused with Declination arcminutes and arcseconds, as they are of a different size.
In right ascension and longitude, the size of the degree (and therefore arcmin and arcsec) changes with how far you are from the equator.

As opposed to a degree of latitude, which always corresponds to about 111 km (69 mi), a degree of longitude corresponds to a distance from 0 to 111 km: it is 111 km times the cosine of the latitude, when the distance is laid out on a circle of constant latitude; if the shortest distance, on a great circle were used, the distance would be even a little less. (Longitude page)

--zandperl 00:03, 3 February 2006 (UTC)[reply]

AB Magnitude[edit]

Thanks for correcting me on this - I've slightly re-edited it so that the reader has some indication that it's an energy to magnitude conversion we're talking about and that 'AB magnitude' is a definite thing to Google for. But if you think we can improve on matters in the interim please do! Bob aka Linuxlad 14:20, 3 February 2006 (UTC)[reply]

Jansky[edit]

Regarding this edit: Please explain why the two are not equivalent. As far as I know, a^b * a^c = a^(b+c). Am I missing something? Owen× ☎ 20:22, 8 January 2009 (UTC)[reply]

I apologize: I made a mistake in verifying the conversion. So, yes: the two forms are equivalent. Then it comes down to a matter of taste. The original form explicitly shows the zeropoint of the AB magnitude scale (48.6); the other does not, but it is shorter. MHD (talk) 12:14, 9 January 2009 (UTC)[reply]

Fair point. Separating the "29" to 23+6 will make this even more obvious; I'll include both forms in the article. Owen× ☎ 13:55, 9 January 2009 (UTC)[reply]

Done. Please feel free to reformat or refactor if you feel that's needed. Thanks! Owen× ☎ 13:59, 9 January 2009 (UTC)[reply]

ArbCom 2017 election voter message[edit]

Hello, MHD. Voting in the 2017 Arbitration Committee elections is now open until 23.59 on Sunday, 10 December. All users who registered an account before Saturday, 28 October 2017, made at least 150 mainspace edits before Wednesday, 1 November 2017 and are not currently blocked are eligible to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2017 election, please review the candidates and submit your choices on the voting page. MediaWiki message delivery (talk) 18:42, 3 December 2017 (UTC)[reply]

ArbCom 2018 election voter message[edit]

Hello, MHD. Voting in the 2018 Arbitration Committee elections is now open until 23.59 on Sunday, 3 December. All users who registered an account before Sunday, 28 October 2018, made at least 150 mainspace edits before Thursday, 1 November 2018 and are not currently blocked are eligible to vote. Users with alternate accounts may only vote once.

The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to impose binding solutions to disputes between editors, primarily for serious conduct disputes the community has been unable to resolve. This includes the authority to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail.

If you wish to participate in the 2018 election, please review the candidates and submit your choices on the voting page. MediaWiki message delivery (talk) 18:42, 19 November 2018 (UTC)[reply]