Latest Sand Stories
On warm days, the beach seems an ideal destination for family rest and relaxation.
Researchers from MIT have developed new algorithms that could enable "Smart Sand" to form into any shape.
The latest episode in the American Chemical Society's (ACS) award-winning "Global Challenges/Chemistry Solutions" podcast series describes how the seeds of the "miracle tree" can be used to produce clean drinking water.
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.