Quartz, Sodalite, Temperature, Graph paper?
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Calling all those with a physics or engineering bent as I must say from the outset that I do not understand what this photo is about. If you are not that way inclined, you could just tell us which is your favourite photo about some of your favourite photos on this stream. Either way I look forward to your comments.
Photographer: Thomas H. Mason
Collection: Mason Photographic Collection
Date: 1890 - 1910
NLI Ref: M23/52/8
You can also view this image, and many thousands of others, on the NLI’s catalogue at catalogue.nli.ie
Source: Flickr Commons
Views: 5736
Photographer: Thomas H. Mason
Collection: Mason Photographic Collection
Date: 1890 - 1910
NLI Ref: M23/52/8
You can also view this image, and many thousands of others, on the NLI’s catalogue at catalogue.nli.ie
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Owner: National Library of Ireland on The CommonsSource: Flickr Commons
Views: 5736
thomasholmesmason
thomasmayne
thomashmasonsonslimited
lanternslides
nationallibraryofireland
quartz
albite
oligoclase
sodalite
hornblende
augite
olivine
meltiness
fluidity
graph
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derangedlemur
Refractive index, maybe. They're all translucent minerals.
derangedlemur
But it could be crush strength, tensile strength, bending moment melting point, who knows what else?
derangedlemur
In fact, if I pay any attention at all, it says on it; fluidity at different temperatures. So basically, how melty the stuff is.
derangedlemur
It doesn't seem to be a standard chart, though. Searching for this list of minerals doesn't produce a result with all of them. Could be either a write up of an experiment or a chart specific to some industrial process in a particular company.
derangedlemur
I suspect it lives in the museum building in Trinity, given the adjacent pictures in the catalogue, and is related to geology/volcanology.
sharon.corbet
https://www.flickr.com/photos/[email protected] I was thinking it's probably another slide for an RDS lecture/article like this one: https://www.flickr.com/photos/nlireland/49869700842
derangedlemur
https://www.flickr.com/photos/scorbet Also a good theory. If you know where the programme or minutes are, we could see if there were any lectures on The Meltiness of Minerals or similar.
sharon.corbet
https://www.flickr.com/photos/[email protected] The internet archive has a lot of the proceedings. I already searched the same volume as the one above for quartz, and it found nothing relevant.
derangedlemur
Lots of reports of mineralogical excursions, but this is a physical analysis, not a field trip.
sharon.corbet
Joly himself was apparently interested in melting points of minerals (which is a little different to fluidity / "meltiness" but I'm not capable of explaining the difference right now.) He had his own meldometer.
derangedlemur
Roughly speaking, melting point is simply the point at which a substance turns from solid to liquid. Not everything has one of these - e.g. carbon dioxide goes straight from solid to gas, toffee doesn't have any clear point at which you can say the transition has been made. Fluidity is a measure of how well something flows and is often different at different temperatures, though not always - e.g. water is the same until it evaporates, whereas toffee (always with the toffee) flows a lot better at 180 than at 50 degrees
sharon.corbet
Here's one paper by Joly which looks at fluidity of minerals, though it doesn't include this graph.
derangedlemur
Page 408 has a similar list with melting points, though not fluidity and not all the same minerals.
derangedlemur
Quartz, Albite, Oligoclase, Sodalite, Hornblende, Augite & Olivine seem to be common to both documents. They haven't come up with the same melting points for them. For sodalite, the melting point matches the point of maximum fluidity, whereas for hornblende, the melting point is the point of minimum fluidity.
sharon.corbet
https://www.flickr.com/photos/nlireland By the way, how can you expect anyone to choose just one photo as their favourite? That's impossible.
derangedlemur
You're all my favourites!
ɹǝqɯoɔɥɔɐǝq
https://www.flickr.com/photos/nlireland/ My favourite photo is tomorrow's ... “The suspense is terrible. I hope it will last.” Oscar Wilde
Billy Quinn 1954
I'll check to see if De Selby mentions any of these 'french' words. he was a great man for the physics.
National Library of Ireland on The Commons
https://www.flickr.com/photos/scorbet you make a good point - I will redraft.
National Library of Ireland on The Commons
https://www.flickr.com/photos/beachcomberaustralia tomorrow's photo will leave you in a spin!
National Library of Ireland on The Commons
https://www.flickr.com/photos/[email protected] Gee, Thanks
National Library of Ireland on The Commons
https://www.flickr.com/photos/mutter_fluffer Believe it or not, I recently selected a nice photo of Dalkey from our archive to be shown here in a few months time.
John Spooner
https://www.flickr.com/photos/mutter_fluffer nails it.
Billy Quinn 1954
Groovy! I love Dalkey, but really hated the sand there, it even smelled / smelt of oil, back in 1959. From my google search it now appears to be all cleaned up. I guess they were waiting for me to leave.
Billy Quinn 1954
Thank you, Mr Spooner, nice sandals!
National Library of Ireland on The Commons
https://www.flickr.com/photos/mutter_fluffer I know a bit about oil spills. There are species of marine bacteria in several families, including Marinobacter, Oceanospiralles, Pseudomonas, and Alkanivorax, that can eat compounds from petroleum as part of their diet. I presume they were responsible for cleaning up the sands over time.
Billy Quinn 1954
Blimey, I am going to use everything you say, in my magnum opus, which I am hoping to publish posthumously, so you can't sue me. It's a great pleasure to meet you.
Billy Quinn 1954
Your photosteam is wonderful, I plan to be all over it, like a rash, to bulk out my waning grey matter.
National Library of Ireland on The Commons
https://www.flickr.com/photos/mutter_fluffer you are more than welcome and I am sure you will fit in with our regular visitors (collectively "Flickroonies").
Billy Quinn 1954
I have been lurking forever here anyway, loving it all, but firmly in the closet. Flickroonie Pride Rules! There it is, I'm out and let the devil take the begrudgers. There'll be no more closet for yours truly!
John Spooner
https://www.flickr.com/photos/mutter_fluffer https://www.flickr.com/photos/nlireland I'm sure anyone familiar with the works of de Selby will fit in here.
sharon.corbet
As no one else has yet, here is one of my favourite photos from the stream: https://www.flickr.com/photos/nlireland/6015148582
National Library of Ireland on The Commons
https://www.flickr.com/photos/scorbet Sharon, it is a much loved one, thanks. Mary
Bernard Healy
www.flickr.com/photos/nlireland/39584391104/ I have so many favourite photos, but this is the one that sticks in my mind because we managed to trace down the descendents of the couple getting married, one of whom is a retired priest serving at a parish that I visited in the States some years ago.
National Library of Ireland on The Commons
https://www.flickr.com/photos/bernardhealy I agree Bernard, it portrayed perfectly the work you all do here.
silverio10
Buenas fotos antiguas .
oaktree_brian_1976
the graph is measuring how various minerals flow when in a liquid/molten state, temperature graph.