APOD: Atmospheric Ring of Venus (2020 Jun 08)

Comments and questions about the APOD on the main view screen.
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neufer
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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by neufer » Tue Jun 09, 2020 2:18 pm

JohnD wrote:
Tue Jun 09, 2020 12:16 pm

OLE!
Who woulda thunk I'm the manure one :?:
https://en.wikipedia.org/wiki/Aka_Manto wrote:
<<Aka Manto (赤マント, Red Cape), is a Japanese urban legend about a masked spirit who wears a red cloak, and who appears to people using toilets in public or school bathrooms. If a person is sitting on a toilet in a public or school bathroom, Aka Manto may appear, and will ask them if they want red paper/cape or blue paper/cape. If they choose the "red" option, they will be lacerated in such a manner that their dead body will be drenched in their own blood. If the individual chooses the "blue" option, the person's blood is drained from their body. If an individual attempts to outsmart Aka Manto by asking for a different color of paper or cape, it is often said that they will be dragged to an underworld or hell as a result. In some versions, choosing a "yellow" paper, cloak or cape will result in the occupant's head being forced into the toilet. Ignoring the spirit, or replying that one does not want or prefer either kind of paper, is said to make the spirit go away. In some accounts, rejecting both options and running away from Aka Manto will also result in the individual's survival, although sometimes Aka Manto will simply block the exit.>>
Art Neuendorffer

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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by TheZuke! » Tue Jun 09, 2020 2:24 pm

neufer wrote:
Tue Jun 09, 2020 11:47 am
  • How many sheets could a sheet slitter slit
    if a sheet slitter could slit sheets :?:

The slitter question...

First of all we need to clear something up; and that little 'something' is the use of the word 'if' - the reason being that sheet slitters CAN slit sheets, so there's no 'if' about it. Sheet Slitter machines DO exist, so unless a sheet slitter is experiencing some sort of terrible mechanical malfunction then you can rest assured that a sheet slitter can indeed slit sheets. Sheet slitters are expensive machines and businesses wouldn’t buy them to slit their materials if they in fact couldn’t slit sheets.

So with that little slop of mud cleared away from our metaphorical wind-sheilds we can proceed with trying to come up with an answer to that annoying question ‘How many sheets could a sheet slitter slit if a sheet slitter could slit sheets?’. There is an answer to this question, of course there is an answer, we’re talking about a real machine that performs a real function in real businesses. But (and I’m sorry if you feel I’ve led you astray) I can’t give you the answer without knowing the following essential variables:
  • What material is being slit?
    How thick is the material being slit?
    What tension does the material need to be at when slit?
    Does the material being slit have an adhesive coating?
    How fast is the slitter being run at when slitting the sheets?
    What type of slitting is being used to slit the sheets? Is it razor, shear or crush-cut slitting?
So with the answers to the above questions it would be fairly easy to answer the question ‘How many sheets could a sheet slitter slit if a sheet slitter could slit sheets?’. Unless of course you’re asking how many sheets could be slit in the useful life span of a slitter machine (rather than how many sheets could be slit in any single job run) in which case the answer is roughly ‘very very many’, slitter machines are very robustly built and last for may years if maintained properly.

Well, neufer, that response is So Full of Sheet! :ssmile:

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neufer
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Ream's Labyrinth

Post by neufer » Tue Jun 09, 2020 3:07 pm

TheZuke! wrote:
Tue Jun 09, 2020 2:24 pm
Well, neufer, that response is So Full of Sheet! :ssmile:
https://en.wikipedia.org/wiki/Labyrinth_of_the_Reims_Cathedral wrote:
Reims's Labyrinth

<<The Labyrinth of the Reims Cathedral was a church labyrinth installed on the floor of the nave of the Reims Cathedral. The labyrinth was the shape of a complex square with cut corners and sides of 34 feet. The paths were 11 inches wide, separated by lines of dark blue stone from Ardennes of a width of 4.50 inches. The labyrinth was made of soft stone that wore out beneath the feet of pilgrims. This stone was of the same kind as Pierre Libergier's tombstone that is now exhibit in the cathedral.

A distinctive aspect of the labyrinth was the inclusion within it of depictions of the master masons of the cathedral. In other churches and cathedrals, they are unknown and anonymous. Indeed, the identities of these master masons are precisely known, because a survey of the labyrinth was drawn in 1640 by Canon Cocquault and in 1779, just before its destruction, by Robin and Havé. These surveys also contained dates and descriptions of the masons' works.

The person at the center of the labyrinth is generally identified as Aubry de Humbert, Archbishop of Reims, who decided in 1211 to build a new cathedral in the place of the one destroyed by fire in 1210. The masons are represented hard at work, with their tools in hand. For example, Jean d'Orbais appears to draw a map on the floor.

Bernard de Soissons was in charge during the inauguration of the labyrinth. There is no trace of the fifth (and probably best-known) contractor, Robert de Coucy, who was in charge from 1290 to 1311 and who oversaw the carpentry and the roof.>>
Art Neuendorffer

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RJN
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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by RJN » Wed Jun 17, 2020 1:55 pm

After perhaps more discussion between experts than ever before in APOD history, of which I was aware, the word "diffracting" has been changed to "scattering" on the main NASA APOD. I would not be surprised if this APOD image -- and perhaps similar images -- are referenced in future science papers analyzing apparent rings around planets near inferior conjunction!
- RJN

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JohnD
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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by JohnD » Wed Jun 17, 2020 3:06 pm

Total thread diversion, but I blame neufer!

Neufer - The Reims Cathdral Labyrinth? Wow! Is that where the idea in Umberto Eco's mind arose, for the Library labyrinth in "The Name of the Rose"? YES! It did! See: https://www.architecturalpapers.ch/index.php?ID=75

John

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neufer
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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by neufer » Wed Jun 17, 2020 4:18 pm

Click to play embedded YouTube video.
JohnD wrote:
Wed Jun 17, 2020 3:06 pm

Total thread diversion, but I blame neufer!

Neufer - The Reims Cathdral Labyrinth? Wow! Is that where the idea in Umberto Eco's mind arose, for the Library labyrinth in "The Name of the Rose"? YES! It did!

See:

https://www.architecturalpapers.ch/index.php?ID=75
Art Neuendorffer

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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by JohnD » Thu Jun 18, 2020 8:36 am

Never thought of you in a strapless evening gown, neufer.

Don't want to, either!

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neufer
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Re: APOD: Atmospheric Ring of Venus (2020 Jun 08)

Post by neufer » Thu Jun 18, 2020 11:41 am

JohnD wrote:
Thu Jun 18, 2020 8:36 am

Never thought of you in a strapless evening gown, neufer.

Don't want to, either!
  • I'm sure that it's bruned into your memory now :!:
Art Neuendorffer