science. A little cool thing called shape memory. It’s made from an alloy of titanium and nickel (I believe it’s called nitinol). It has the ability to “remembe

science

A little cool thing called shape memory. It’s made from an alloy of titanium and nickel (I believe it’s called nitinol). It has the ability to “remember” the shape it’s taken. When cold, you can bend it whatever which way, but once you heat it (or in this case put it in what I presume is hot water), it will take the original shape.

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Submitted: 05/22/2013
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#3 - caesium (05/22/2013) [+] (14 replies)






That timer was so helpful!
#4 to #3 - shalulu (05/22/2013) [-]
it's there to make sure the footage isn't fast-forwarded
User avatar #17 - inserttexthere (05/23/2013) [+] (2 replies)
why would you start the timer if you were going to wait that long, utterly useless
User avatar #23 to #17 - dylandiekunst (05/23/2013) [-]
To show people that it wasn't sped up
#13 - heafi (05/23/2013) [+] (10 replies)
free timer for everyone
free timer for everyone
User avatar #2 - moorgar (05/22/2013) [+] (3 replies)
The Time Measurment was so usefull...
#10 to #2 - miwauturu (05/23/2013) [-]
It's like a timestamp, it proves it's happening in real time, and is not sped up, so yeah, the timer was useful.
#35 - gharshi (05/23/2013) [+] (2 replies)
funnyjunk in a nutshell
#26 - anontoster (05/23/2013) [-]
Comment Picture
#45 - therichie (05/23/2013) [+] (1 reply)
i cant science good, what is this?
#1 - grandtheftkoala **User deleted account** (05/22/2013) [-]
Yeah mr Wolfdogone, yeah science!
#72 - cula (05/23/2013) [+] (1 reply)
never seizes to amaze me
never seizes to amaze me
User avatar #76 to #72 - ssjkirby (05/23/2013) [-]
Never ceases* to amaze me
#40 - willcutting (05/23/2013) [+] (2 replies)
The timer is useful for 2 reasons :
>To show that the sequence is not reversed
>To show that the sequence was not speeded up
-11
#36 - crotchlesshotpants has deleted their comment [+] (5 replies)
User avatar #16 - hideyoshi (05/23/2013) [-]
my curly ass jewfro hair must have shape memory....
User avatar #63 - theusamajunk (05/23/2013) [+] (3 replies)
Why the timer?
User avatar #64 to #63 - watermelonkittie (05/23/2013) [-]
That's to prove that the video isn't shopped or sped up in any way, I think
#61 - gersonalvat (05/23/2013) [-]
**gersonalvat rolled a random image posted in comment #31 at ARE CAT ** SCIENCE!
#94 - trollzorr (05/23/2013) [-]
Comment Picture
User avatar #77 - Adrien (05/23/2013) [-]
This is nitinol, a metal that reforms the shape it was cast in when it is heated.
www.youtube.com/watch?v=UEaM-GjsV2o
User avatar #46 - vladhellsing ONLINE (05/23/2013) [+] (3 replies)
Looks like they replicated the car repair system from Carmageddon.
#75 - moocowsz ONLINE (05/23/2013) [+] (1 reply)
#6 - anonymous (05/23/2013) [+] (1 reply)
shape memory alloy: at the high energy state (hot) the metal has a cubic crystal structure. when cooled below a critical temperature, This cubic state is no longer stable so the crystal structure becomes essentially a 3D rhombus. These different "rhombi?" (forgive me i'm doing this from memory) form by nucleation as random individual nanocrystals will deform and then larger crystals will precipitate around the first crystals nucleus forming large areas of metal with the same orientation. Where areas of different orientations meet, they form morphological boundaries calling twins (the formation of this is often called twinning). when the cool metal is deformed, the deformation occurs around the twin boundaries without stress. When the material is warmed back hot enough that the cubic state is stable, the boundaries become unstable and disappear. The mechanism of their removal pulls most atoms back to the original location and so the original shape reforms.
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