Date: 28/03/2013 08:06:37
From: Spiny Norman
ID: 287539
Subject: Breaking Prince Rupert's Drops

I’d never heard of them before this, they’re quite interesting.

http://youtu.be/xe-f4gokRBs

Quite a lot of the other videos in that channel are very interesting as well.

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Date: 28/03/2013 08:50:00
From: Michael V
ID: 287552
Subject: re: Breaking Prince Rupert's Drops

Been reading “Oscar and Lucinda” (by Peter Carey) by any chance?

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Date: 28/03/2013 09:02:55
From: Carmen_Sandiego
ID: 287555
Subject: re: Breaking Prince Rupert's Drops

Michael V said:


Been reading “Oscar and Lucinda” (by Peter Carey) by any chance?

It is a video that has just popped up all over the place recently. I’d heard of them, but not to the detail the video explains.

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Date: 28/03/2013 09:39:49
From: Arts
ID: 287564
Subject: re: Breaking Prince Rupert's Drops

that is very cool.. thanks SN.

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Date: 28/03/2013 09:45:46
From: Arts
ID: 287566
Subject: re: Breaking Prince Rupert's Drops

A scholarly account of the early history of Prince Rupert’s Drops is given in the Notes and Records of the Royal Society of London. Most of the early scientific study of the drops was performed at the Royal Society.

The drops are reliably reported to have been made in Mecklenburg in North Germany, at least as early as 1625. However, it has been claimed that they were invented in Holland, hence a common name for them in the 17th century was larmes bataviques or lacrymae Batavicae. The secret of how to make them remained in the Mecklenburg area for some time, although the drops were spread across Europe from there, for sale as toys or entertainments.

It seems clear that Prince Rupert did not discover the drops, but played a role in their history by being the first to bring them to Britain, in 1660. He gave them to King Charles II, who in turn delivered them in 1661 to the Royal Society (which the King had created the previous year) for scientific study. Several early publications from the Royal Society give accounts of the drops and describe experiments performed. Among these publications was Micrographia of 1665 by Robert Hooke, who later would discover Hooke’s Law. His publication laid out correctly most of what can be said about Prince Rupert’s Drops without a fuller understanding than existed at the time, of elasticity (to which Hooke himself later contributed so greatly) and of the failure of brittle materials from the propagation of cracks. A fuller understanding of crack propagation had to wait until the work of A. A. Griffith in 1920.

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Date: 28/03/2013 09:48:34
From: kii
ID: 287568
Subject: re: Breaking Prince Rupert's Drops

Michael V said:


Been reading “Oscar and Lucinda” (by Peter Carey) by any chance?

That’s where I first heard about them :)

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Date: 28/03/2013 09:51:36
From: sibeen
ID: 287569
Subject: re: Breaking Prince Rupert's Drops

Was a cool video :)

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Date: 28/03/2013 19:30:44
From: Teleost
ID: 287865
Subject: re: Breaking Prince Rupert's Drops

Very cool.

I liked his cat dropping vid too.

Many thanks SN

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