Dry Ice Fun - The Screaming Spoon

A lot of people this Christmas Season will be getting packages with perishable food. Most of those packages will be packed with dry ice. It is like two gifts in one.

There are other videos like this showing the same thing, but I have strived for better product values. Shot in HD, tight and close up shots of all the action, plus TWO spoon action.

Why does it vibrate?
The surface you touch is considerably warmer than the dry ice (which, I believe, is normally at around 60 below zero,
Fahrenheit) and causes the dry ice to sublimate rapidly to
CO2 gas. Since you're pressing the ice against the metal,
there will be places where gas is momentarily trapped between the two surfaces, and when released through a small opening tends to "whistle," which has a characteristic sound when coupled with the resultant vibration of the metal plate.

Category:

Science & Technology

Tags:

• dry
• ice
• vibration
• screaming
• spoon
• experiment
• science
• squel
• whistle
• metal
• CO2
• sublimate
• squealing
• annoying
• noise

[ClauHenA]

stop hurting those spoons!

[7StormyLines7]

now dump the water and push down hard on the spoon, it's ridiculously loud!! .... try it

[tpbocelli]

@billybobjoe8889  welcome

[billybobjoe8889]

@tpbocelli thanks

[ltlrenati]

It could be the beginning of a hardcore techno song lol

[tulitech]

Can someone explain why this happens pls? thx :)

[Theuntamedlover]

i kind of want to put a Di... Dime on there.

[tpbocelli]

R.I.P head phone users

[LordRunty]

@C4FishingTeam Actually, it does. Just about has everything to do with the temperature of the metal. If the spoon is quite cold, then it won't sublimate the dry ice as quickly, or at all if it's cold enough. A hot spoon will of course sublimate the dry ice faster, but with the air pockets being created it will limit the amount of extra energy that can be transferred to the dry ice to sublimate it, so the relationship isn't linear.

[C4FishingTeam]

@frick0121 This has nothing to do with temperature of the spoon :)