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Science image dump

Started by Claireliontamer, April 10, 2016, 02:58:28 PM

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joeactor


Biggus Dickus

"Some people just need a high-five. In the face. With a chair."

Biggus Dickus

"Some people just need a high-five. In the face. With a chair."

Biggus Dickus

"Some people just need a high-five. In the face. With a chair."

xSilverPhinx

I am what survives if it's slain - Zack Hemsey


xSilverPhinx

I am what survives if it's slain - Zack Hemsey


No one


xSilverPhinx

I am what survives if it's slain - Zack Hemsey


joeactor

Not tears, but it is a drop (Prince Rupert's that is...)


Magdalena

Quote from: joeactor on January 18, 2018, 08:36:57 PM
Not tears, but it is a drop (Prince Rupert's that is...)


What is this?

"I've had several "spiritual" or numinous experiences over the years, but never felt that they were the product of anything but the workings of my own mind in reaction to the universe." ~Recusant

xSilverPhinx

Quote from: Magdalena on January 18, 2018, 10:07:32 PM
Quote from: joeactor on January 18, 2018, 08:36:57 PM
Not tears, but it is a drop (Prince Rupert's that is...)


What is this?

I don't know what it it, but it's beautiful. :tellmemore:
I am what survives if it's slain - Zack Hemsey


joeactor

Quote from: joeactor on January 18, 2018, 08:36:57 PM
Not tears, but it is a drop (Prince Rupert's that is...)



It's made of glass. Called a "Prince Rupert's Drop", and has some amazing properties - more here:
https://en.wikipedia.org/wiki/Prince_Rupert%27s_Drop

... and a great video here:

Magdalena

^^^
~That's so cool.  8)
Thanks for sharing it, joeactor.

"I've had several "spiritual" or numinous experiences over the years, but never felt that they were the product of anything but the workings of my own mind in reaction to the universe." ~Recusant

Dave

#133
For the science bit: the sudden cooling and hardening of the glass from the outside causes  stresses inside, things like glass shrink as they cool, but the inside can't. That sudden cooling toughens the glass, so withstanding hammer blows, but the tail is still fragile. So if the tail's tough skin is broken those stresses relax in a wave front through the drop.

Pretty sure the shattering effect of a toughened glass car windcreen is the same. A centre punch breaking the skin anywhere causes the whole thing to shatter.
Tomorrow is precious, don't ruin it by fouling up today.
Passed Monday 10th Dec 2018 age 74

xSilverPhinx

Well, you learn something new every day! :grin:
I am what survives if it's slain - Zack Hemsey