By tilting the ruler, the images it contains appear to move. This works because the plastic coating consists of a series of stripes, creating what are called lenticular lenses.

A simple plastic ruler. While ATV-5 is designed to dock without human intervention, someone aboard the ISS always manually checks the approach speed of the massive cargo vessel to ensure that ...

The ruler is a great educational equalizer—students in San Francisco and Sub-Saharan Africa can both learn the basics of geometry using nothing more than a stick with regularly spaced marks ...

Here is another demo from my book, Angry Birds Furious Forces. This is great demo and you can do it yourself at home. How do you do it? You just need some type of plastic thing. A comb, a plastic ...

An African ruler has met climate and business leaders to discuss the plastic free ocean movement. Her Royal Highness Queen Diambi Kabatusuila from the Democratic Republic of Congo joined the ...

plastic ruler an item of clothing made of wool (not cotton), e.g., socks or a pullover for the first trick: a sink with a faucet for the second trick: an empty aluminum can The smallest particles in ...

IPOH: Sterner measures are required to tackle plastic waste management in the country, says Sultan Nazrin Muizzuddin Shah. The Perak Sultan said that the "user pays" principle imposed on ...