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The world's longest-running lab experiment

The Pitch Drop Experiment

The experiment demonstrates the fluidity and high viscosity of pitch, a derivative of tar that is the world's thickest known fluid and was once used for waterproofing boats.

Thomas Parnell, UQ's first Professor of Physics, created the experiment in 1927 to illustrate that everyday materials can exhibit quite surprising properties.

At room temperature pitch feels solid - even brittle - and can easily be shattered with a hammer. But, in fact, at room temperature the substance - which is 100 billion times more viscous than water - is actually fluid.

In 1927 Professor Parnell heated a sample of pitch and poured it into a glass funnel with a sealed stem. He allowed the pitch to cool and settle for three years, and then in 1930 he cut the funnel's stem.

Since then, the pitch has slowly dripped out of the funnel - so slowly that it took eight years for the first drop to fall, and more than 40 years for another five to follow.

Now, 87 years after the funnel was cut, only nine drops have fallen - the last drop fell in April 2014 and we expect the next one to fall sometime in the 2020s.

The experiment was set up as a demonstration and is not kept under special environmental conditions - it's kept in a display cabinet - so the rate of flow of the pitch varies with seasonal changes in temperature.

The late Professor John Mainstone became the experiment's second custodian in 1961. He looked after the experiment for 52 years but, like his predecessor Professor Parnell, he passed away before seeing a drop fall.

In the 86 years that the pitch has been dripping, various glitches have prevented anyone from seeing a drop fall.

- University of Queensland, Australia

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I’ve been making gay knights (and ladies) collages on my phone at work

(Part two)

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the bedrooms of our friends

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Every Monkey Island Everywhere All At Once I made myself a BUNCH of Monkey Island dioramas in a row because I am a huge Lucas Arts fan. https://www.etsy.com/shop/chimo55jimbo?ref=simple-shop-header-name&listing_id=1088106677§ion_id=25224453

#the secret of monkey island #monkey island #diorama

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Follow up question for some more tumblr population sample statistics

Again, please reblog to increase sample size.

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Moss Graffiti: A How To Guide

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I remembered.

#it's the 21st of september #demi adejuyigbe

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# dog energy/cat energy but with all the ofmd couples

#our flag means death

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Ed + loving Stede for all the things he was always mocked for

#our flag means death

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Ahhahah, haha, ha. Oh no. (I feel called out.)

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MANOIR DE L’ANTIQUAIRE

This impressive mansion is part of a classicist farm complex, dating back to the middle of the 18th century. The extensive farm complex consists on the street side of this manor, a carriage house, a gatehouse and a caretaker’s house. At the rear are several stables and a barn converted into an antique shop. At the far end of the site are the old stables.

The luxurious finish of the mansion, including the finely sculpted mantelpieces in marble and stucco, the slate floors, the wall and ceiling paintings and the carved wood bed, is a clear remnant of the past splendor. It is not surprising that the farm complex was marked as architectural heritage as early as 1981.

Little is known about the earliest history of the farm. The whole became vacant when the antique shop located in the outbuildings went into bankruptcy in December 2019.

[luincalen]

I truly love how queer can mean "Eh I'm some flavour of Not-Cishet but I don't care to know the specifics beyond that" but also "I absolutely do know the specifics but we will be here all damn day if we get into it" and like. Everything in between. I think that's incredibly powerful of us tbh.

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Ye Baiyi Costume Appreciation, 2 of 2 (Word of Honor)

I didn’t put the white in the palette because it doesn’t show up on the web view, but obvs white is his primary color. This outfit has two metallic threads, gold and silver.

(masterpost)

#ye baiyi #word of honor

[luincalen]

Merovingian brooches 

#brooches #merovingian #medieval

[luincalen]

ok so i love my jedi, mandalorians, bounty hunters... as much as the next gal, but when are we going to talk about her

this woman

i have no words

has never been off planet, but has trampled my heart

look at her!

taking no shit from anybody, but does be taking care of the wrinkled critter! vouching for a frog lady she just met, for she is an excellent judge of character! repairing a starfighter while adding extra modifications for her best buddy! speaking fluently Jawaese

dated a frikking Jawa??? like good for you, madam, great for the Jawa!

this woman is the best

#the mandalorian #the book of boba fett #peli motto #star wars

[luincalen]

why does no one ever talk about being able to physically feel the last thing you copied. like youll right click a url and copy it and be able feel the weight of it like its in some kind of inventory