What happens when you look at the 'moment when gold leaf shatters in a vacuum chamber' in super slow motion?
Exploding Gold in a Vacuum at 80,000FPS - The Slow Mo Guys - YouTube
Mr. Gab from The Slow Mo Guys is on the left and Mr. Dan is on the right.
This time, they will use a newly acquired vacuum chamber to shoot slow motion footage.
This time, Mr. Dan will use the thin gold leaf he has in hand. Although Mr. Dan currently has
A vacuum chamber is a container that can create a vacuum inside by expelling gas to the outside, and when the pressure is restored, air flows inside at once. If you put a thin piece of gold leaf inside a vacuum chamber, you can visually see what happens when the air rushes in and the pressure returns.
Gold leaf was hung on a stick passed between two poles, like a washed sheet. First, we will test with fake gold.
Fake gold leaf is set inside the vacuum chamber.
Gradually remove the air inside to create a vacuum.
Mr. Dan confirms that the vacuum state has been established and restores the pressure.
Then, the fake gold leaf inside fell apart inside the vacuum chamber, as if it had been put through a blender.
This is what the fake gold leaf placed in the vacuum chamber looks like from close up.
When air flows in, the gold leaf instantly becomes dusty.
After that, the gold leaf was scattered from the bottom to the top. You can see the air entering from the top of the chamber reaching the floor and returning to the top from there.
Next time I decided to test it with real gold leaf. As expected, Mr. Dan also looked nervous.
Gently place the gold leaf inside the vacuum chamber.
Apparently real gold leaf is even more sensitive to air flow than fake gold, and it trembles even during vacuuming.
This is what it looks like when the air is returned. Gold dust was scattered as if it had exploded.
Next time I will try taking pictures with a higher performance camera.
When Mr. Dunn restored the pressure in the vacuum chamber, the gold leaf was reduced to dust without a trace.
This is a video taken with a high-performance camera of 50,000 fps (50,000 frames per second).
You can see that the flow of air that has entered the interior is flowing through the gold leaf like waves.
The gold leaf begins to tear from the center, probably because there is a hole at the top that allows air to enter.
The gold leaf shattered in an instant.
The fragments, which are now gold dust, roll up into the chamber.
Next, place real gold leaf on the bottom of the chamber and try again.
Looking at the slow-motion video, it became clear that the gold leaf was gradually peeling up from the edge.
The gold leaf gradually disintegrates inward.
Eventually everything shattered.
Next time, I decided to layer 'real gold leaf' on top of 'fake gold leaf'.
The fake gold leaf did not break, but only the real gold leaf shattered.
Real gold leaf is still peeling up from its surroundings.
The real gold powder turned into gold powder and was blown away spectacularly by the power of the air.
In addition, when I opened the lid of the vacuum chamber after the experiment, I found that gold powder was stuck to the inside.
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