BrianB - Slashdot User

Comment Re:Suggestion: Alternative technology (Score 1) 99

by BrianB on Wednesday April 12, 2017 @01:54PM (#54223087) Attached to: Google Ruins the Assistant's Shopping List, Turns It Into a Big Google Express Ad

That is the biggest reason I like Google Home. Standing in the kitchen "Hey google, add milk to the shopping list", don't even have to pick up a pen. Super convenient and easy. This is the reason I've never before used an app for a grocery list.

Israeli Scientists Freeze Water By Warming It 165

Posted by timothy on Saturday February 06, 2010 @06:30AM from the you-must-become-the-frozen-water dept.

ccktech writes "As reported by NPR and Chemistry world, the journal Science has a paper by David Ehre, Etay Lavert, Meir Lahav, and Igor Lubomirsky [note: abstract online; payment required to read the full paper] of Israel's Weizmann Institute, who have figured out a way to freeze pure water by warming it up. The trick is that pure water has different freezing points depending on the electrical charge of the surface it resides on. They found out that a negatively charged surface causes water to freeze at a lower temperature than a positively charged surface. By putting water on the pyroelectric material Lithium Tantalate, which has a negative charge when cooler but a positive change when warmer; water would remain a liquid down to -17 degrees C., and then freeze when the substrate and water were warmed up and the charge changed to positive, where water freezes at -7 degrees C."

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