World's Largest Devil's Toothpaste Explosion

Summary by Krater

Mark Rober plans and executes the world's largest elephant toothpaste experiment to surprise a young cancer patient named Fletcher for his birthday.

From the video

Answers: How to make the world's largest elephant toothpaste experiment?

• elephant toothpaste experiment
• science experiments
• birthday surprises
• world records

What it concludes

• The square-cube law explains that volume increases by a factor of 8 while strength increases by a factor of 4 when dimensions are doubled.
• A Goldilocks-sized diameter opening in the container gives a cool laminar flow while still going high.
• With a high volume of foam, the pressure creates high forces in the flask, requiring a strong, over-engineered structure.
• Devil's toothpaste uses potassium permanganate as a catalyst, making it much more reactive and hotter than traditional elephant toothpaste.
• The tallest elephant toothpaste fountain world record was successfully achieved by Fletcher Rollinson and Mark Rober in Gridley, California on 22 August 2020.