TheBackyardScientist | Pouring molten Aluminum into a Pumpkin (cooled with liquid nitrogen!!!) @TheBackyardScientist | Uploaded 8 years ago | Updated 3 hours ago
Join the science discord! discord.gg/pw5sZ3PTye The inside of a pumpkin has a pretty interesting geometry. I had the idea to cast the inside to see what it looks like, but the inside of the pumpkin is very fragile and the 1000 degree aluminum pretty much destroys it as soon as it comes in contact with the soft flesh.
I thought freezing the pumpkin would provide more structural support, so I froze the pumpkin from the inside out with liquid nitrogen. My thermometer can only measure to -36f (-38c), and the pumpkin was colder than that. Liquid nitrogen has a boiling point of like -300 degrees. Which means it sucks heat from whatever it touches until that object is -300 degrees at which point it stops boiling.
Next time I cast any fruits i will defiantly be freezing them first!
Join the science discord! discord.gg/pw5sZ3PTye The inside of a pumpkin has a pretty interesting geometry. I had the idea to cast the inside to see what it looks like, but the inside of the pumpkin is very fragile and the 1000 degree aluminum pretty much destroys it as soon as it comes in contact with the soft flesh.
I thought freezing the pumpkin would provide more structural support, so I froze the pumpkin from the inside out with liquid nitrogen. My thermometer can only measure to -36f (-38c), and the pumpkin was colder than that. Liquid nitrogen has a boiling point of like -300 degrees. Which means it sucks heat from whatever it touches until that object is -300 degrees at which point it stops boiling.
Next time I cast any fruits i will defiantly be freezing them first!
![Molten Aluminum Volcano [ERUPTION]](https://i.ytimg.com/vi/xRwWM0IJwz0/hqdefault.jpg "Molten Aluminum Volcano [ERUPTION]
Join the science discord! https://discord.gg/pw5sZ3PTye 🍌I was going to do a video on Sand Casting then I got distracted.🍌
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![Cooking Dinner with Science [There was an attempt]](https://i.ytimg.com/vi/xZYf3R-4j3g/hqdefault.jpg "Cooking Dinner with Science [There was an attempt]
Join the science discord! https://discord.gg/pw5sZ3PTye Sponsored by Blue Apron: The first 100 people will get three free meals on their Blue Apron order! Click here:
http://cook.ba/2txYxnf")
![Exploding Arrows with compound bow! [Arrow filled with black powder, capped w/ shotgun primer]](https://i.ytimg.com/vi/yT8q_ITh0uw/hqdefault.jpg "Exploding Arrows with compound bow! [Arrow filled with black powder, capped w/ shotgun primer]
Join the science discord! https://discord.gg/pw5sZ3PTye This is our first attempt at exploding arrows, we probably used a half ounce of black powder in the arrow itself. It was a carbon arrow. We removed the tip and replaced it with a large shotgun primer.
I saw these first in the anarchists cookbook about 15 years ago.
The bang was rather satisfying.. probably doing it again soon!")
