Archive | Unspun

31 March 2011 ~ 0 Comments

That Time Of Year Has Come Around

That’s right, folks, it’s time for the annual Spinny Bar Historical Society Conference.

This year’s conference brings us to the perpetually-sunny Philadelphia. While there are no revolving bars and/or restaurants in the city of brotherly love, we’ll be there, just the same.

-Hanging around,
Ryan,
Director, Spinny Bar Historial Society

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22 April 2010 ~ 0 Comments

The Largest Spinny Bar on, err, is Earth.

On this most terrestrial of days, we here at the Spinny Bar Historical Society wanted to take a brief time out from our whirlwind tour of activity to bring you some fun Earthday Facts!

Earth
(shout out to Wikiscient).

Earth’s rotation period relative to the Sun (true noon to true noon) is its true solar day or apparent solar day. It is the derivative of the equation of time and thus depends on the eccentricity of Earth’s orbit and the tilt (obliquity) of Earth’s axis. Both vary over thousands of years[1] so the annual variation of the true solar day also varies. Generally, it is longer than the mean solar day twice a year and shorter twice a year.[n 1] The true solar day tends to be longer near perihelion when the Sun apparently moves along the ecliptic through a greater angle than usual, taking about 10 seconds longer to do so. Conversely, it is about 10 seconds shorter near aphelion. It is about20 seconds longer near a solstice when the projection of the Sun’s apparent movement along the ecliptic onto the celestial equator causes the Sun to move through a greater angle than usual. Conversely, near an equinox the projection onto the equator is shorter by about 20 seconds. Currently, the perihelion and solstice effects combine to lengthen the true solar day near December 22 by 30 mean solar seconds, but the solstice effect is partially cancelled by the aphelion effect near June 19 when it is only13 seconds longer. The effects of the equinoxes shorten it near March 26 and September 16 by 18 seconds and 21 seconds, respectively.[2][3][4]

The average of the true solar day over an entire year is the mean solar day, which contains 86,400 mean solar seconds. Currently, each of these seconds is slightly longer than an SI second because Earth’s mean solar day is now slightly longer than it was during the 19th century due to tidal acceleration. The mean solar second between 1750 and 1892 was chosen in 1895 by Simon Newcomb as the independent unit of time in his Tables of the Sun. These tables were used to calculate the world’sephemerides between 1900 and 1983, so this second became known as the ephemeris second. The SI second was made equal to the ephemeris second in 1967.[5]

Earth’s rotation period relative to the fixed stars, called its stellar day by the International Earth Rotation and Reference Systems Service (IERS), is 86,164.098 903 691seconds of mean solar time (UT1) (23h 56m 4.098 903 691s, 0.997 269 663 237 16 SI days).[6][n 2] Earth’s rotation period relative to the precessing or moving mean vernalequinox, misnamed its sidereal day,[n 3] is 86,164.090 530 832 88 seconds of mean solar time (UT1) (23h 56m 4.090 530 832 88s, 0.997 269 566 329 08 SI days).[6] Thus the sidereal day is shorter than the stellar day by about 8.4 ms.[8]

Source: Wikipedia

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22 April 2010 ~ 0 Comments

Spinning around…but which way?

Centerpoint Tower. 1 of 3 spinny bars in Sydney.

Someone recently sent the Spinny Bar Historical Society a spinnytweet (use #sbhs, we are always listening) asking if spinny bars spun different directions in different hemispheres.

Well I gave a shout out to my friend Tony Mesa, from the Macton Corporation (the LARGEST spinny bar manufacturer in the world) and here is what he had to say

The drive of our revolving restaurant (Macton is the predominant manufacturer in the world) is reversible and has variable speed. Having said that, it seems the ones I’ve visited seemed to be set to rotate clockwise, however there is no specific reason for this. I don’t know if folks from the southern hemisphere would also choose to rotate them otherwise, since the clocks there also go… clockwise.

and thanks for clearing that up for us Tony!

I set a challenge to our readers. If you can document yourself in a spinny bar, and convince someone to reverse it’s direction, capture the reverse spinny bar action on film, I will send you something from the lovely Spinny Bar Historical Society merchandise selection.

now go forth…and safe spinning.

Erika

(image courtesy Chip_2904)

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20 April 2010 ~ 1 Comment

Visuals to make one’s head spin!

Being a Historical Society whose membership is largely passionate cultural heritage technologists (with a smattering of regular vanilla technologists) has some serious advantages when it comes to being able to get things done.

As such, one simply MUST check out the jaw dropping data available from one of our research fellows,

http://people.lis.illinois.edu/~twidale/spinny

We’ve also made an appearance on the wikipedia’s list of historical societies, and, as of right now, we’re the only international historical society listed! Woot! First Post, and whatnot.

-May your Spins always be Spinny
Ryan

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17 April 2010 ~ 0 Comments

We’ve got a new Director of Science!

Welcome to our new Director of Science, Nancy Mia!

We’re very fortune to have you around!

The Certificate of Orbit

courtesy brownwindsor.

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16 April 2010 ~ 0 Comments

A round of Applause

To Jane and Anra for their award winning work, both for us and for Culture 24. We love you guys!

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16 April 2010 ~ 2 Comments

Spinny Bar Historical Society is now live~!

Thanks to our brilliant friends at the Museums and the Web conference, we have finally gotten our act together and started new Social Media Ventures!  More information to come, but right now there are more spinny bars to find!

We’ll spin you right round.

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