Topic: ping pong balls

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How to make an Amazing 9 Layer Density Tower

Water is less dense than honey. Rubbing alcohol is less dense than water. Poured carefully on top of each other, from heaviest to lightest, they can create distinct layers. Add more liquids of different densities, suc...

Demonstrations of the Coanda Effect

Fluids flowing near a surface tend to follow the shape of the surface. Using Schlieren optics, we can see this behavior. It is known as the Coanda Effect and its explanation depends on viscosity, the frictional forces...

How table tennis balls are made

The process of making table tennis balls includes lots of measuring and at least one trade secret. Competition-ready balls also go through a series of quality checks by hand—testing the balls' surface, veer, hardness,...

A Japanese ‘Pythagoras Switch’ Rube Goldberg Machine for charity

This awesome Pythagora Switch / Pitagora Suitchi clip launches with a table tennis serve and takes off into chain reactions and table top engineering wonders galore. See ping pong balls, tape rolls, marbles, and metal...

Scott Weaver’s ‘Rolling through the Bay’ toothpick sculpture

This nine foot tall wooden sculpture of San Francisco was made with glue and 105,387 and a half toothpicks. It was built by Scott Weaver who, stuck at home at the age of 14 with spinal meningitis, started working in e...

Scott Weaver’s Rolling through the Bay: 35 years + 100k toothpicks

Scott Weaver’s Rolling through the Bay, an homage to the city of San Francisco, is made of over 100,000 toothpicks and Elmer’s glue, and was built over 35 years time. This structure was temporarily feature...

2,000 ping pong balls and 30 middle-school teachers in Zero G

Because 2,000 ping pong balls and 30 middle-school teachers floating in “zero gravity” isn’t something you see everyday, the kids should watch (or rewatch!) this 2010 ScienceBob video. From northrop...

Liquid Nitrogen and 1500 Ping Pong Balls

Dr. Roy Lowry of Plymouth University in the UK made science explosively exciting for his class by demonstrating how powerful (and loud) it can be when the pressure of cold, trapped Liquid Nitro...


 
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